Santa Ana River - Knowledge

1057: 702: 1938:, formed in 1932 to manage the county's groundwater, uses the treated water from upstream to recharge a massive reservoir, or aquifer, that runs roughly nine miles from Lakeview Avenue to Ball Road. The water percolates through layers of sand and gravel, which work to scrub, or purify it. There, it joins treated wastewater pumped from the Orange County Sanitation Department's state-of-the-art plant in Fountain Valley. Those two types of water account for 60 to 70 percent of the aquifer, which can hold 500,000 acre feet. Combined with water imported from Northern California and the Colorado River, the OCWD maintains that the aquifer could serve the water needs of all its clients for a year. 1155: 1048:. Based on a U.S. Coastal Survey from 1878, Newport Bay was predominantly a river estuary with few open channels. The river flowed into the bay bringing with it heavy silt and making boating difficult. To eventually create Newport Harbor, sand deposited by the Santa Ana River had to be constantly dredged away. In 1920, the Bitter Point Dam was built to divert the river away from the bay and on its current course to the ocean at Huntington Beach. Stone jetties were built to form the new river mouth. All of the Islands in Newport Harbor are the product of dredging and man made forming from the sands and silt deposited over time by the Santa Ana River. 1942:

Association. Both have conducted studies as to what beneficial uses the Santa Ana River would have aside from water supply and flood control, as well as the removal of some of the concreted sections of the lower river. This set of studies is known as the "Use-Attainability Analysis", which was submitted to the state Congress, which approved it. However, upon submission to the EPA, it was rejected. As a result, little work has been done to repair the ecological damage that has been caused by urbanization along the river. Other projects include the Santa Ana Watershed Planning Advisory Committee, and the Santa Ana River Watershed Alliance (SARWA).

1655:, eventually brought an end to the Mission Period. The post-Mission Period native population was almost entirely devastated. The population was very little, their native religions were nearly lost, and most of their land had been taken by Spanish settlers. Although the Mexican government's original intention with the Secularization Act was to provide the Native Americans with their own land and property, most of the provisions made by the act never actually happened. Spanish settlers continued to press into the remaining tribal lands, and eventually, the tribes were forced into the surrounding desert lands or into the high mountains. 2520: 1951: 1846: 2266: 1564: 5215: 965: 1406:, because it is disconnected from most of the Santa Ana River system. Up to the 1950s, significant numbers of steelhead trout still migrated in from the ocean. Because of pollution and modifications to the river, very few steelhead still use the river. There is a population of wild stream resident coastal rainbow trout upstream of Seven Oaks Dam and in the upper reaches of a few tributaries. Despite the rarity of steelhead, in recent years fin samples from 13 trout were collected from Harding Canyon in the 568: 1371: 1040:

River and converted into flood control channels, including the Talbert and Huntington Beach channels, which empty into the Pacific very near the mouth of the Santa Ana River. The combined Talbert-Huntington Beach watershed drains 21.4 square miles (55 km) of mostly suburbanized land. The river originally had many different outlets to the Pacific, one of which even extended as far north as the San Gabriel River. The original mouth of the river was located at

2534: 54: 1765: 2462: 2422: 2060: 2494: 2403: 2350: 2322: 2296: 2237: 2219: 2161: 2125: 35: 2140: 2037: 961:. All of these are water supply reservoirs constructed by county or state water agencies, and with the exception of Big Bear, much of the water is imported from other parts of California due to the arid local climate. Diamond Valley Lake, with a storage capacity of 800,000 acre-feet (0.99 km), is the largest and most recently constructed. Lake Elsinore is the only major natural lake in the watershed. 1891: 1670:, a 62,500-acre (253 km) rancho on the left bank of the lower Santa Ana River. This rancho was acquired by Don Juan Pablo Grijalva as early as 1801. Other ranchos on the river followed, including ones in inland areas that had not been exploited in the Mission Period. The ranchos (beginning with the missions) established the tradition of raising 1882:. The second dam, Seven Oaks Dam, was completed in 1999. This dam captures flood runoff from Santa Ana Canyon before it can enter the Inland Empire. The dam was designed to withstand a 350-year flood. Today, the river lies mainly between levees and concrete channels, and especially in its lower course, functions only as a flood drainage channel. 4389: 1866:. In fact, the river flooded again in 1969, and while much of the runoff from the Inland Empire was captured behind Prado Dam—probably saving Orange County from an even greater flood—Santiago Creek, a large tributary flowing from the Santa Ana Mountains, eroded its banks until it swept away portions of residential communities in the cities of 1708: 1862:—an area once occupied by farms—and the river became confined to a narrow channel—a flood similar to the ones surrounding the turn of the 20th century would cause much more damage. The construction of roads and buildings also heightened the runoff that would flow into the river during rainfall, a process known as 4403: 1792:

along the river burst in many places, flooding part of the Inland Empire into a continuous body of water several miles wide stretching from the mouth of Santa Ana Canyon to where the river cuts through the Santa Ana Mountains. Downstream in Orange County, the river overwhelmed nearly all the existing

1747:

In 1860, a much closer gold rush occurred in the San Bernardino Mountains when prospector William Holcomb discovered significant deposits, just over the northern drainage divide of the Santa Ana River. This discovery exploded into a full-scale gold mining operation in days. The Santa Ana River served

1039:

is extremely narrow because the surrounding land slopes away from the river bed. In its natural state the river would frequently change course into one of many intermittent channels that fan out across the plain. Today, these auxiliary river-beds have been artificially disconnected from the Santa Ana

1926:

recharge basins, providing approximately 218,000 acre-feet (269,000,000 m) of municipal water for the county every year, or one-third of its water supply. Downstream of that dam, the river gathers further urban runoff before finally making it into the Pacific. The Santa Ana River is included on

1825:

in up to 4 feet (1.2 m) of water, stripping away thousands of acres of rich topsoil and destroying many of the citrus groves. Almost 60 people were killed in the disaster and about 68,400 acres (277 km) of land were flooded, despite the fact that the flow in the river was only one-third of

1294:

of the main stem Santa Ana River. The largest unbroken riparian corridor is the 20-mile (32 km) stretch between Riverside and Prado Dam, where the river has been largely left in its natural state despite pollution from urban runoff. In addition, the flood control basin behind Prado Dam contains

1482:

people of the northwestern United States. Eventually, the human population of the watershed reached a peak of about 15,000. About 8,000 years ago, the climate experienced a change becoming more arid and the originally nomadic tribes began to stay in individual places longer, becoming semi-nomadic.

1310:

The alpine and subalpine zones, despite their high elevation (above 9,500 feet, 2,900 meters) and significant rainfall (at least 35 inches, 89 centimeters per year, except in drought years), are sparsely vegetated. The windswept terrain of the alpine zone is primarily small brush and weeds, while

1997:

which, when complete, will run from the river's mouth at Huntington Beach to near the San Bernardino Mountains, currently extends about 30 miles (48 km) along the river to Prado Dam. The proposed distance along the trail is over 70 miles (110 km). In Riverside County, the Hidden Valley

1124:

Zone crosses the Santa Ana River further downstream, near the Orange/Riverside County line. Tectonic action along this fault created the Santa Ana Mountains, Puente Hills, East Orange Hills, Chino Hills, Loma Ridge, and the other mountain ranges and ridges that run northwest–southeast across the

1092:

about 75 million years old. However, above elevations of 8,000 to 9,000 feet (2,400 to 2,700 m) ancient metamorphic rock up to 1.7 billion years old is exposed. This rock originally formed at the bottom of the ancestral Pacific Ocean and was uplifted to the highest peaks of the mountains by

895:

The Santa Ana River drains the largest watershed of California's South Coast region, covering 2,650 square miles (6,900 km) in parts of San Bernardino, Riverside, Orange and Los Angeles Counties. Although the river does not pass through Los Angeles County, some of its tributaries, including

1941:

A number of organizations have been formed to try to gain public interest in restoring the river. One of the most prominent is the Santa Ana Watershed Project Authority (SAWPA), formed by five municipal water districts in the Santa Ana River area. A second one is the Santa Ana River Dischargers

784:

enters from the north. Lytle Creek is one of the largest tributaries of the Santa Ana river, rising from three forks in the San Gabriel Mountains and flowing southeast, before emptying into the Santa Ana River as Lytle Creek Wash. From there, the river turns southwest, and after passing through

2006:

fed with water from the river. Ultimately, the trail could link a network of river-bottom parks. In 2014, naturalists navigated the stretch of river flanked by Chino Hills State Park on the north and the Cleveland National Forest on the south. The rafts made it 2 miles (3.2 km) before the

1158:

Santa Ana River woolly-star (Eriastrum densifolium ssp. sanctorum) is endemic to the Santa Ana River drainage in southern California. It is listed as endangered under the California Endangered Species Act (CESA) and Federal Endangered Species Act, killing or possessing the plant is prohibited.

1141:

due to its increased erosive power. The canyon was eroded through bedrock that today divides the groundwater basins of the Inland Empire and the coastal plain. Because groundwater in the watershed generally flows from east to west, it is forced to the surface at the bedrock "sill" of Santa Ana

1390:, that migrates up rivers and streams to spawn. Unlike salmon, which usually only reproduce once, steelhead may reproduce multiple times and have a much longer life span. Steelhead was once found along the entire main stem of the Santa Ana River, as well as on some of its main tributaries— 1853:

With the increased flood protection afforded by the Prado Dam, major industrial development migrating south from the Los Angeles Basin, and the Southern California housing boom in the 1950s and 1960s, the Santa Ana River watershed began its third and final transition—from agricultural to

1359:, willow and cottonwoods. Where the river and its large upper tributaries empty out of the mountain canyons into the Inland Empire basin, they are surrounded by the alluvial scrub zone, a mix of desert and upper riparian vegetation. Along the main stem, this zone begins at the base of 904:

lowland on the north and east. The Santa Ana Mountains and Chino Hills divide the Inland Empire from the Orange County coastal plain; the Santa Ana Canyon is the only natural break in the range between the two lowlands. The southern part of the watershed, drained by the

1877:

In 1964, the Santa Ana River Mainstem Project, which involved concreting the lower 30.4 miles (48.9 km) of the river, was first proposed. Construction work began in 1989, and today, through much of Orange County, the river's channel is essentially an enormous box

928:

As of 2000, about 4.8 million people lived in the Santa Ana River watershed. Most of the population is concentrated close to the river in urban centers such as San Bernardino, Riverside, Anaheim and Santa Ana. The Inland Empire still has large areas dedicated to

1719:

was assimilated into the United States in 1848, American settlers began to move into the Santa Ana River region in great numbers. The Mexican ranchos were divided into smaller individual properties, and irrigated agriculture began on a large scale. The city of

1674:

in coastal Southern California, a custom upheld until the late 19th century. Agriculture, however, although established, was not yet a major industry. A flood that raged down the Santa Ana in 1825 caused the river's course to change temporarily to an outlet at

1858:. The population of the Santa Ana River basin increased dramatically, but brought with it the threat of greater damage from floods, somewhat compromising the protection afforded by Prado Dam. Because housing and urban areas encroached on the river's historic 1801:

caused the deaths of tens of thousands of head of livestock. Despite all of the hardships experienced in the three years, after conditions finally returned to normal, the Santa Ana River watershed again became a prospering agricultural region. The cities of

1703:

area. However, the Santa Ana River flooded, preventing the Mexicans from crossing the river to attack the Americans. When the river's flow finally subsided, the American forces had been reinforced enough to drive the Mexicans out of the region.

1084:

in the flat valleys and basins of the watershed are underlain by thousands of feet of sediment deposited by shallow seas that covered parts of Southern California in ancient times. Most of the mountains in and around the basin consist of

1583:

sailed along the Southern California coast on his voyage of 1542, he passed the mouth of the Santa Ana River without noting it. Neither did any of the subsequent Spanish sea-borne explorers leave any written notice of the river mouth.

1793:

floodworks and transformed the coastal plain into a transient inland sea. The flow, now calculated as a 1,000-year flood, peaked at roughly 9,000 cubic meters per second (320,000 cu ft/s), over half the average flow of the

1425:. Perhaps the largest effect that giant reed has is its usage of water. To support its fast growth rate, the giant reed population in the Santa Ana River watershed can consume 56,200 acre-feet (69,300,000 m) of water per year. 3654:

Clemento, Anthony J.; Anderson, Eric C.; Boughton, David; Girman, Derek; Garza, John Carlos (2009). "Population genetic structure and ancestry of Oncorhynchus mykiss populations above and below dams in south-central California".

1448:

is another invasive large weed that also, like the giant reed, uses large amounts of water. Unlike giant reed, the saltcedar has deeper roots, not only making it more difficult to remove but allowing it to access and use up deep

813:

flows. It is also one of the longest, at 32 miles (51 km) in length. Except during the wettest years when Lake Elsinore fills high enough to overflow, Temescal Creek contributes little to no water into the Santa Ana River.

1259:, thick, low bushes and small trees. The chaparral generally is found between elevations of 1,000 and 6,500 feet (300 and 1,980 m), and occurs mainly closer to the coast on the windward side of the Peninsular Ranges. The 725:, at the headwaters of the South Fork Santa Ana River. The river flows west through a wide, deep and heavily forested mountain valley. About 18 miles (29 km) from its headwaters, it receives its first major tributary, 1788:, heavy rains dropped by a series of winter storms caused the Santa Ana to burst its banks, flooding thousands of acres of land and killing 20 to 40 people in the greatest flood it had experienced in recorded history. The 1514:

in the lower basin. The Yuhaviatam generally lived in the mountain headwaters of the Santa Ana River and its tributaries rimming the present-day Inland Empire basin, in present-day San Bernardino County, as well as in the

1998:

Wildlife Area also has 25 miles (40 km) of recreational paths. Some entities have been opting for a Santa Ana River Park, which would encompass a strip of land on either side of the river for its entire course. The

1436:, which were brought to Southern California during the Spanish Rancho period. The brown-headed cowbird is a "brood parasite", or a bird that lays its eggs in another bird's nest. One of the most afflicted birds is the 1683:. Spread throughout the ranchos on the Santa Ana River were a few towns, military outposts and trading posts. The Santa Ana River valley was one of the most prosperous regions in Southern California for many decades. 1626:

Although no missions were actually located along the Santa Ana River or within the watershed, the river basin was nearly depleted of native people because the Spanish forced them to work at nearby missions, including

1163:

Hundreds of species of animals and plants characterize the Santa Ana River's diversity of climates and vegetation zones. There are over ten of these vegetation zones in the watershed—including the sparsely vegetated

1136:

and earlier ice ages, during which rivers in Southern California were substantially bigger in volume. The Santa Ana River, which existed prior to the creation of the Peninsular Ranges, maintained its course as an

4841: 1142:

Canyon, resulting in a perennial stream that prior to development flowed freely across the coastal plain to the Pacific. During this period, the Santa Ana changed course multiple times, eroding now-dry

900:

extend into it. The watershed consists mainly of high mountain ranges that surround and divide large, dry alluvial valleys. The San Gabriel, San Bernardino and San Jacinto Mountains encircle the arid

5022: 1756:

became the mainstay of the economy of the lower Santa Ana River area. Through the late 19th century, citrus fields covered much of the coastal plain and led to the naming of Orange County.

5047: 673:. After the area became part of the United States, the economy transitioned to agriculture, before urbanizing in the 20th century. Many cities established during this time including 4282: 4434:(Map). Cartography by Resources & Development Management Department, Geomatics/Land Information Systems Division, GIS Mapping Unit. Orange County Public Works. Archived from 865:

it passes through the River View Golf Course, one of its few non-concreted sections within Orange County, and then becomes a concrete channel again through most of Santa Ana and

614:

The Santa Ana drainage basin has a diversity of terrain, ranging from high peaks of inland mountains in the north and east, to the hot, dry interior and semidesert basins of the

1615:

that struck while they were camped alongside there. Crespi also noted that the soldiers were calling the river "Rio de Santa Ana", probably because they had recently celebrated

1474:

tribes that traveled from place to place, grazing animals on fertile grasslands and gathering fruits and seeds for food. The ancestors of these early people originated from the

4602: 1740:, to irrigate crops. The cattle industry began to decline as farms began to replace ranches. Soon, white settlers in the region were more numerous than Hispanics as well. The 5108: 4792: 869:

to a point below the 405 Freeway, where the river bed becomes natural (though the banks remain concrete). The mouth of the river is located in a small tidal lagoon between

634:, which drains the southern half of the watershed, rarely reaches the Santa Ana except in extremely wet years. A wide variety of animal and plant communities depend on the 845:, providing about half of the county's municipal water supply. Downstream of there, the river is mostly confined to a concrete channel, serving only for flood control and 5123: 5113: 1990:

are popular recreational lakes in the watershed. The river never actually flows through any of these lakes, but they each have drainage to the river via tributaries.

4910: 4812: 141: 1129:. While the Transverse Ranges rise above 10,000 feet (3,000 m) in many places, the highest peaks of the Peninsular Ranges reach less than half that elevation. 4756: 1413:

Invasive species—those that are not native to the region—have caused problems in the watershed for many years. One of the most troublesome invasive species is the

1335:, and willow constitute most of the forested lands. The mountain habitats of the watershed support many animals typical of Californian mountain regions, including 4460: 5052: 1838:, built in 1941, was designed to capture floodwaters from the Inland Empire about 30 miles (48 km) upstream from the river's mouth. The dam's impoundment, 1251:

community of the Orange County coastal plain, but that region has been almost entirely lost to urbanization. Rimming the arid portions of the watershed are the

2731:. Jon Erlandson, Terry L. Jones, Jeanne E. Arnold, Cotsen Institute of Archaeology at UCLA. Los Angeles: Cotsen Institute of Archaeology at UCLA. p. 64. 5098: 2002:

would like to develop riverside green space near the historic downtown district. The Santa Ana River Lakes, located near Anaheim, are a popular recreational

1752:

as a result of the high resource demands of the boom. Gold was also discovered in Lytle Creek in that same year. Following the gold rush, the cultivation of

3808: 6758: 5057: 5032: 4925: 4920: 1421:, but grows quickly and can take over native stands of vegetation, block the streambed, hurts the habitat of native animals, and increases the hazard of 1299:, a small bottom-dwelling fish, was once found along most of the Santa Ana River, but is now rarely seen. Near the mouth, the river was once abundant in 5161: 4905: 4856: 4595: 1523:

of present-day Orange County south of the Santa Ana Mountains. They were also the larger of the two groups, controlling all the coastal lands from the

3017:(Map). Cartography by National Hydrography Dataset, National Geographic TOPO!, CalWater 2.2.1, CEMAR. Center for Ecosystem Management and Restoration. 937:, although it is rapidly urbanizing. In Orange County, nearly all the valley lands are urbanized. Some major bodies of water in the watershed include 5128: 4881: 3635:(Map). Cartography by National Hydrography Dataset, National Geographic TOPO!, CalWater 2.2.1, CEMAR. Center for Ecosystem Management and Restoration 1666:

owned by individuals. Some of the new private ranchos were merely converted mission ranchos. The first private rancho along the Santa Ana River was

1603:, the party camped "about three leagues" from where the Santa Ana River exits the canyon through the northern Santa Ana Mountains, near present-day 1112:

runs across the northern section of the watershed and is responsible for the formation of the San Bernardino and San Gabriel Mountains, part of the

5042: 4851: 4802: 2557: 626:

environments. Due to low regional rainfall, the river carries only a small flow except during the brief winter season, when it is prone to massive

6753: 4426: 1902:

is free-flowing, as are many of its upper tributaries. Once the river enters the Inland Empire basin, however, much of its flow is diverted for

1319:—occur in canyons and shielded depressions in the subalpine zone. Inland elevations above 5,000 feet (1,500 m) support much denser forest. 1263:

is one of the most common plants in chaparral regions, forming a dense groundcover that makes it difficult for humans and large animals such as

5037: 4836: 2798: 6677: 4876: 4846: 4807: 4588: 1830:

made the decision to dam and concrete the river beginning in the 1940s, and declared it as the greatest flood hazard in the U.S. west of the

6748: 5103: 4749: 4294: 1402:. Few, if any, steelhead were present in Temescal Creek (although one of its tributaries was stocked in the 1930s) and none inhabited the 6773: 4765: 2547: 1922:. Any flow that makes it downstream to Orange County is diverted by another pair of dams into approximately 1,100 acres (4.5 km) of 1440:, whose population also suffers from the loss of riparian habitat. The least Bell's vireo is considered an endangered species, as is the 2007:

vegetation was impenetrable but they were convinced there were possibilities of improving public access and recreational opportunities.

1744:

around this time was responsible for attracting many of these people to the state, but many remained in Southern California afterwards.

39:

The Santa Ana River as seen from a small bluff overlooking the water. This part of the river serves as the border between the cities of

6627: 2552: 890: 3401: 3208: 3118: 1491:

were a staple food of many of the inland valley people. People closer to the ocean often fished and hunted small animals, often from

1060:

The Transverse Ranges were formed by uplift along the San Andreas Fault. Santa Ana Canyon is between the first and second ridges and

897: 3180: 2934: 2898: 2862: 2826: 2687: 2478: 661:

were located along the river. The river was first seen by Europeans in 1769, when it received its name from members of the Spanish

379: 3288: 1695:. The Santa Ana river played an important part in the victory of the Americans over the Mexican army. In 1847, one year after the 992:

watersheds border the Santa Ana watershed on the south. Further south, in San Diego County, the watershed is bordered by those of

4742: 4118: 3234: 3153: 1132:

The cutting of Santa Ana Canyon across the Peninsular Ranges is attributed to the wetter Southern California climate during the

6778: 5154: 3551: 1784:

Notwithstanding the increased prosperity in the 1860s, this decade was also the scene of a series of natural disasters. In the

4575: 4362: 765:, the river bed is usually dry in this stretch between Mill Creek and the outlet of the Veolia water treatment plant north of 4693: 3459: 2774: 2736: 1611:, one of the members of the expedition, wrote in his diary that he called the spot "Jesus de los Temblores", referring to an 993: 3908: 1600: 6300: 4224: 2208: 1928: 1797:. Even after the flood, detrimental conditions continued in the region. For the two years following the flood, an intense 2925: 2889: 2853: 2817: 2678: 1958:

There are many recreational opportunities along the Santa Ana River. The Santa Ana River watershed includes parts of the

1894:

The Prado Flood Control Basin on the Santa Ana River has one of the largest remaining riparian zones along the main stem.

1813:

1934 and 1938 saw a further pair of devastating floods that in part brought an end to the area's citrus industry. In the

721:

are Dollar Lake, at 9,288 feet (2,831 m), and Dry Lake, at 9,068 feet (2,764 m), both on the northern flank of

298: 220: 155: 6055: 4489: 1591:

led the first overland expedition northwards through coastal Southern California—still a largely unexplored part of the

6554: 5909: 4464: 4194: 3524: 1648: 4164: 6783: 6763: 6211: 5199: 5147: 4968: 4960: 3946: 3745: 3359: 2990: 2965: 2628: 1236: 1056: 914: 802: 738: 588: 526: 284: 92: 805:

from the south. Temescal Creek drains the largest area of all the tributaries, because it provides the outflow from

6617: 6607: 6095: 4787: 4673: 1737: 1399: 746: 518: 6323: 5924: 5904: 4531: 4320: 4049:"The flood next time... When the next 100-year storm hits, the damage will be huge. Guess who will pay for it..." 3819: 3094: 2930: 2894: 2858: 2822: 2683: 1143: 3969:

Gold, Scott (October 3, 1999). "Disaster Prompted $ 1.3 Billion Effort to Tame Santa Ana River, Protect Basin".

1780:"Mainliner", shows flooded agricultural fields in central Orange County, with the Pacific Ocean in the distance. 6707: 6687: 6489: 6453: 6368: 5834: 5184: 4773: 4683: 4668: 4628: 1963: 1568: 1466:

Human habitation on the Santa Ana River dates back 9,000 to 12,000 years ago, close to the early stages of the

1403: 1232: 973: 922: 917:

into the Santa Ana River, constitutes some 45% of the total area and extend its boundaries as far south as the

906: 810: 717:

of two tiny streams, Heart Bar Creek and Coon Creek, at an elevation of 6,991 feet (2,131 m). Its highest

631: 531: 1417:, which plagues many coastal Southern California waterways. The giant reed is similar to a tall grass or thin 1410:

tributary of the Santa Ana River and genetic analysis has shown them to be of native and not hatchery stocks.

1200:

along the river bed, lined with trees and rushes, and the thinly vegetated coastal areas virtually flush with

6473: 4718: 3693: 2920: 2884: 2848: 2812: 2673: 1005: 3031: 6768: 6494: 6270: 6255: 6226: 6191: 6171: 6120: 6045: 5954: 5588: 5417: 5357: 5194: 4126: 3040: 2562: 2277: 2250: 2114: 2049: 1994: 1935: 1827: 1667: 1628: 874: 742: 726: 592: 547: 361: 96: 6597: 6295: 6285: 6260: 5869: 5573: 5214: 2425: 2406: 2325: 2063: 1898:

As with many Southern California rivers, the Santa Ana is heavily polluted and used. The main stem above

1528: 1240: 985: 972:

The Santa Ana River watershed shares boundaries with many adjacent river basins. In the northwest is the

866: 685:

derived their names from the river. In order to protect urban areas from the river's flood threat, major

2015:

The Santa Ana River has 70 significant crossings, bridges and dams. This list places them from mouth to

6697: 6290: 6135: 5964: 5939: 5528: 5291: 5204: 5118: 4988: 2525: 2465: 2143: 1910:

water use. Most of the flow in the river below the city of San Bernardino consists of effluent from 45

1748:

as a conduit for miners traveling to the region and many of the forests in the upper basin experienced

1729: 1498:

Several major premodern Native American groups eventually gained control of lands along the river: the

1453:. However, the saltcedar is similar in that it also provides little usable habitat for native animals. 1351:, and many species of migratory birds. In the canyons of the San Bernardinos, the river is abundant in 901: 750: 110: 4558: 4435: 701: 6637: 6378: 6265: 6206: 6161: 6105: 6050: 6040: 5799: 5703: 5668: 5663: 5648: 5628: 5623: 5437: 5367: 5301: 5276: 5189: 2497: 2353: 2299: 2240: 2222: 2164: 2128: 2028: 1959: 1839: 1814: 1382:

Historically, the Santa Ana was named "the best stream in Southern California ". The steelhead is an

1045: 878: 818: 604: 365: 100: 4553: 3879:. Berkeley: University of California Press. pp. 140–143 – via HathiTrust Digital Library. 686: 6743: 6632: 6280: 6275: 6181: 6176: 6140: 6125: 6110: 6100: 6085: 6070: 6065: 5985: 5899: 5859: 5794: 5723: 5713: 5498: 5483: 5347: 4891: 3912: 2567: 2270: 2040: 2016: 1733: 1692: 1395: 1364: 1041: 781: 718: 710: 584: 555: 1487:, nor did they raise animals or live in villages. Like many Native American tribes in California, 6448: 6240: 6130: 6010: 5949: 5929: 5919: 5824: 5753: 5743: 5718: 5688: 5673: 5633: 5563: 5538: 5478: 5457: 5452: 5427: 1967: 1700: 1635:. The affected tribes were usually renamed after the missions, resulting in tribal names such as 1580: 1535:. These peoples established villages, some of which were multiethnic and multilingual, including 1133: 754: 551: 4548: 1428:

Other invasive species also have affected the Santa Ana River. One of the most prominent is the

6682: 6564: 6559: 6408: 6221: 6115: 6075: 6030: 5934: 5829: 5728: 5658: 5513: 5508: 5327: 5271: 4290: 3293: 2429: 2410: 2174: 1975: 1260: 977: 870: 4580: 6712: 6544: 6534: 6423: 6398: 6393: 6186: 6000: 5914: 5884: 5849: 5844: 5839: 5819: 5814: 5693: 5678: 5593: 5518: 5372: 5362: 5342: 5296: 5286: 4698: 4084: 2368: 2288: 1807: 1803: 1721: 1663: 1659: 1524: 1437: 997: 858: 786: 766: 722: 678: 674: 666: 607:

to drain into the Pacific Ocean. The Santa Ana River is 96 miles (154 km) long, and its

122: 114: 5017: 1227:

The largest portion of the watershed, the Inland Empire portion, is dominated by a hot, dry

6652: 6443: 6358: 6353: 6305: 6250: 6166: 6060: 6035: 6015: 6005: 5969: 5889: 5879: 5864: 5854: 5809: 5774: 5748: 5708: 5698: 5653: 5638: 5618: 5608: 5603: 5583: 5568: 5503: 5473: 5442: 5432: 5407: 5402: 5377: 5352: 5337: 5072: 5062: 4978: 3408: 3212: 3122: 2644: 2587: 2445: 2132: 1999: 1741: 1632: 1429: 1154: 838: 762: 40: 3627: 1588: 8: 6569: 6549: 6529: 6428: 6373: 6333: 6196: 5990: 5944: 5874: 5784: 5779: 5758: 5643: 5578: 5558: 5548: 5488: 5447: 5392: 5387: 5382: 5317: 5261: 5256: 5170: 4612: 3487: 3186: 1818: 1785: 1716: 1647:

killed much of the native population during the roughly 50-year-long Mission Period. The

1344: 1146:

in the Peninsular Range and the coastal mesas around Huntington Beach and Newport Beach.

1117: 950: 830: 682: 596: 580: 118: 3552:"Environmentalists to sue San Bernardino and Colton over the killing of threatened fish" 3015:

Historical status of Oncorhynchus mykiss in coastal streams of Orange County, California

2645:"USGS Gage #11074000 on the Santa Ana River below Prado Dam, CA: Water-Data Report 2013" 2588:"USGS Gage #11074000 on the Santa Ana River below Prado Dam, CA: Water-Data Report 2013" 1699:, a Mexican military force set out northwards to attack a smaller American force in the 665:. Because it was one of the only reliable sources of water in a wide region, many large 6539: 6519: 6433: 6216: 6156: 6090: 6080: 6025: 6020: 5995: 5959: 5738: 5733: 5683: 5553: 5543: 5523: 5422: 5412: 5397: 5332: 5322: 5281: 5266: 4930: 4708: 4703: 4514: 3935: 3672: 3298: 2792: 2177: 1871: 1867: 1822: 1244: 1189: 1001: 850: 705:

Mill Creek (pictured) is one of the main headwaters tributaries of the Santa Ana River.

662: 459: 4734: 4130: 3289:"From Wetlands to Boating Playground: 75 years since the dedication of Newport Harbor" 1101:, so the rock has remained for tens of millions of years without significant erosion. 693:

projects were undertaken, resulting in the loss of much of the natural river channel.

6657: 6579: 6509: 6463: 6458: 6418: 5894: 5613: 5598: 5533: 5493: 4993: 4900: 4831: 4658: 4653: 4493: 4394: 3971: 3942: 3629:

Current status of Oncorhynchus mykiss in coastal streams of Orange County, California

3556: 3455: 3261: 3238: 3178: 3157: 2986: 2961: 2780: 2770: 2742: 2732: 2624: 2539: 2433: 2226: 2185: 2147: 2067: 1831: 1794: 1773: 1676: 1662:. This occurred when the enormous land holdings of the missions were subdivided into 1604: 1540: 1532: 1328: 1304: 1138: 1126: 1113: 1109: 968:

The channeled mouth of the Santa Ana River between Huntington Beach and Newport Beach

758: 646: 522: 44: 3676: 2708:

U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data.

1640: 1503: 6717: 6602: 6438: 6338: 6201: 5804: 5789: 4945: 4940: 4871: 4366: 4048: 3664: 2469: 2414: 2244: 2098: 1971: 1911: 1777: 1769: 1696: 1576: 1499: 1296: 1077: 1073: 1009: 925:. The river has over 50 named tributaries, most of which are intermittent streams. 834: 829:. The river roughly bisects the county as it flows southwest towards the ocean. In 826: 733:, a popular recreational mountain lake. The river turns south, passing through the 641:

Humans have lived on the Santa Ana River for at least 9,000 years. The villages of

600: 2769:. Larry B. Van Dyke, Eva Dienel (1st ed.). Birmingham, Alabama. p. 219. 2265: 1080:

underlie and form the geologic base of the Santa Ana River watershed. Most of the

6504: 6343: 6328: 4935: 4861: 4797: 4713: 4633: 3874: 3609: 2329: 1592: 1507: 1383: 1221: 1105: 1021: 981: 918: 4232: 3407:. California State University Los Angeles, Department of Geology. Archived from 3185:(Map). Watershed and Coastal Resources Division of Orange County. Archived from 1724:

Viejo, the original location of Santa Ana, was founded in this period. In 1854,

1619:. That name remains today (the second oldest place name in Orange County, after 6692: 6363: 5082: 5077: 5027: 5003: 4866: 4688: 4543: 3402:"The Role of Antecedent Rivers in Shaping the Orange/Los Angeles Coastal Plain" 2487: 2391: 2357: 2339: 2303: 2168: 1899: 1620: 1407: 1391: 1375: 1360: 1332: 1324: 1231:

climate that supports sparse wildlife, while the climate and vegetation of the

1177: 1169: 1165: 1121: 1036: 989: 854: 734: 670: 622:

and highland forest, the majority of the watershed consists of arid desert and

619: 608: 567: 535: 4517:

Special Collections and Archives, The UC Irvine Libraries, Irvine, California.

3668: 2983:

From Crest to Coast—110 Miles Along Southern California's Largest River System

2728:

Catalysts to complexity : late Holocene societies of the California coast

1608: 6737: 6672: 6622: 6612: 6468: 6413: 6388: 6383: 6348: 4950: 4648: 4623: 3719: 2784: 2746: 2621:

California riparian systems: ecology, conservation, and productive management

1983: 1979: 1849:

Army Corps of Engineers map of the 100-year floodplain of the Santa Ana River

1764: 1691:

In the late 1840s, California fought for its independence from Mexico in the

1680: 1520: 1511: 1352: 1291: 1264: 1193: 1061: 1025: 958: 910: 806: 790: 774: 730: 635: 615: 394: 381: 349: 313: 300: 235: 222: 170: 157: 72: 4202: 4021: 3528: 1636: 1623:), and the name of the mountain range and city were derived from the river. 833:, the entire flow of the river (except during wet seasons) is diverted into 618:, to the flat coastal plain of Orange County. Although it includes areas of 6722: 6667: 6662: 6524: 6514: 6403: 5139: 4983: 4915: 4663: 4638: 4172: 3237:. Watershed and Coastal Resources Division of Orange County. Archived from 3211:. Watershed and Coastal Resources Division of Orange County. Archived from 2958:

101 Hikes in Southern California: Exploring Mountains, Seashore, and Desert

2102: 2003: 1950: 1915: 1907: 1863: 1749: 1320: 1069: 1032: 1017: 954: 942: 862: 846: 4463:. Riverside County Regional Park & Open Space District. Archived from 3749: 3363: 2960:. 101 Hikes Walking Guides (2nd ed.). Wilderness Press. p. 110. 2764: 2726: 6642: 6499: 5240: 5012: 4643: 2709: 2395: 1987: 1931:'s (EPA) list of "304 (l) 'toxic hot spots' list of impaired waterways". 1923: 1484: 1479: 1450: 1256: 1044:, which drained into the Pacific Ocean, at what is today the entrance to 946: 938: 930: 822: 798: 627: 559: 344: 3086: 1643:. Difficult working and living conditions and European diseases such as 1108:

and geologic instability have shaped the Santa Ana River watershed. The

964: 6574: 4973: 4782: 4723: 1859: 1855: 1845: 1616: 1612: 1563: 1414: 1300: 1098: 1013: 714: 82: 2618: 53: 6647: 5067: 4325: 3876:

Fray Juan Crespi: Missionary Explorer on the Pacific Coast, 1769–1774

2309: 1919: 1903: 1835: 1826:

that of the 1862 flood. With the extreme damage from the floods, the

1596: 1536: 1516: 1492: 1445: 1441: 1348: 1252: 1248: 1213: 1201: 1185: 1089: 794: 770: 737:, and reaches the arid Inland Empire lowland covering large parts of 642: 623: 455: 4534: 1644: 1552: 1548: 1544: 1475: 1467: 1422: 1340: 1336: 1303:, which stretched for miles on either side of the river, even near 1287: 1283: 1276: 934: 658: 654: 650: 3697: 1279:

and droughts, and depends on the semi-arid climate of the region.

729:, which enters from the north. Bear Creek receives its water from 34: 1879: 1798: 1316: 1209: 1094: 1086: 1081: 842: 797:. Two major tributaries of the river join in the reservoir area: 2614: 2612: 2076:

Slater Avenue/West Segerstrom Avenue (Santa Ana/Fountain Valley)

1728:

settled in the upper Inland Empire area and started the city of

1097:, Southern California mountains were not subjected to extensive 1031:

In Orange County, the river flows across a vast, gently sloping

4610: 2181: 1753: 1732:, gaining prosperity by using water from the river, as well as 1725: 1671: 1652: 1433: 1418: 1387: 1370: 1272: 1268: 1228: 1205: 4570: 3653: 2345:

Mission Boulevard/Buena Vista Avenue (Jurupa Valley/Riverside)

2073:

Talbert Avenue/MacArthur Boulevard (Santa Ana/Fountain Valley)

1519:

of the San Bernardino Mountains. The Tongva lived on the flat

3984: 3982: 2609: 2046:

Victoria Street/Hamilton Avenue (Costa Mesa/Huntington Beach)

1789: 1488: 1471: 1356: 1197: 1004:. On the east the watershed shares borders with those of the 1470:

period. The first Native Americans to live in the area were

1307:, which has also served as an alternate mouth of the river. 669:

developed along the river and one of its major tributaries,

3179:

Watershed and Coastal Resources Division of Orange County.

1707: 1312: 1217: 1173: 4490:"How California is turning drainage canals back to rivers" 4283:"Grand Jury: O.C. imported water supply "very vulnerable"" 3979: 3909:"Report on the Condition and Needs of the Mission Indians" 3450:

Clarke, Oscar F.; Svehla, Daniella; Ballmer, Greg (2007).

1890: 1768:

The Santa Ana River flooding in 1938, just downstream of

1444:, whose habitat is often shared with the other bird. The 1181: 690: 2043:(Pacific Coast Highway) (Newport Beach/Huntington Beach) 1432:, which feeds off parasites and insects identified with 4764: 3362:. Santa Ana Watershed Project Authority. Archived from 1374:

This segment of the Santa Ana River just downstream of

4231:. Orange County Flood Control Division. Archived from 4201:. Orange County Flood Control Division. Archived from 4171:. Orange County Flood Control Division. Archived from 1567:

Bernardo Yorba Adobe was built by Mexican settlers in

1295:

6,600 acres (2,700 ha) of seasonal wetlands. The

4087:. Suburban Emergency Management Project. June 7, 2006 2725:

Koerper, Henry; Mason, Roger; Peterson, Mark (2002).

2120:

Garden Grove Boulevard/Memory Lane (Orange/Santa Ana)

780:

Not far below the confluence with San Timoteo Creek,

4365:. Santa Ana River Watershed Alliance. Archived from 3610:"Steelhead/rainbow trout resources of Orange County" 3519: 3517: 3121:. Santa Ana River Watershed Alliance. Archived from 2724: 2515: 1282:

Perennial and seasonal streams often are lined with

1204:. The watershed supports up to 200 bird species, 50 849:

drainage, and is usually dry or a small trickle. At

4085:"Los Angeles Basin's Catastrophic 1938 Flood Event" 3508: 3449: 2381:

Metrolink Inland Empire-Orange County Line (Colton)

4321:"The Santa Ana River Is Ready for Its Renaissance" 3934: 3803: 3801: 3799: 3797: 3795: 3793: 3791: 3615:. Center for Ecosystem Management and Restoration. 2204:Glassell Street/Kraemer Boulevard (Orange/Anaheim) 1817:, the Santa Ana again burst its banks and flooded 817:Below Prado Dam, the Santa Ana River crosses into 769:, which restores a year-round flow. From there to 3933:Hoover, Mildred Brooke; Kyle, Douglas E. (2002). 3902: 3900: 3898: 3748:. Santa Ana Watershed Association. Archived from 3604: 3602: 3600: 3598: 3527:. Santa Ana Watershed Association. Archived from 3514: 2619:Warner, Richard E.; Hendrix, Kathleen M. (1984). 2558:Category: Populated places on the Santa Ana River 1810:were established in 1869 and 1870, respectively. 1394:, San Antonio and Chino Creeks, Cucamonga Creek, 6735: 3119:"About the Watershed: Santa Ana River Watershed" 3033:Prado Dam Embankment and Outlet Works Dedication 2291:& Inland Empire-Orange County lines (Corona) 638:and remnant wetlands along the Santa Ana River. 4016: 4014: 3788: 3395: 3393: 3148: 3146: 3144: 3142: 3140: 3051:– via Orange County Board of Supervisors. 3008: 3006: 3004: 3002: 2623:. University of California Press. p. 882. 1378:marks the beginning of the inland riparian zone 1275:to traverse. Chaparral growth is determined by 821:, and cuts between the Santa Ana Mountains and 611:is 2,650 square miles (6,900 km) in size. 3895: 3816:Parks, Recreation and Community Service Agency 3696:. Orange County Water District. Archived from 3595: 3156:. Orange County Water District. Archived from 1759: 1510:in the desert areas of the watershed, and the 595:counties, before cutting through the northern 5155: 4750: 4596: 4001: 3999: 3997: 3844: 3842: 3840: 3327: 3325: 3323: 3310: 3308: 3026: 3024: 1679:, depositing sediment that partially created 1651:, passed by the newly independent country of 1239:watershed is similar to that of the southern 1125:lower section of the watershed – the coastal 424:96 mi (154 km), Northeast-Southwest 5169: 4314: 4312: 4011: 3964: 3962: 3960: 3958: 3390: 3137: 3113: 3111: 2999: 1885: 1502:or Yuharetum people in the upper basin, the 1035:created from its own sediments therefor its 761:from the south. Due to water diversions for 6759:Rivers of San Bernardino County, California 3209:"Introduction to Santa Ana River Watershed" 2548:List of rivers of Orange County, California 1172:in the mountains, mid-elevation forests of 5162: 5148: 4757: 4743: 4603: 4589: 4484: 4482: 4428:Santa Ana River Regional Bikeway and Trail 4390:"Where a Cyclist Can Really Get On a Roll" 3994: 3941:. Stanford University Press. p. 266. 3932: 3837: 3320: 3305: 3021: 2797:: CS1 maint: location missing publisher ( 2553:List of tributaries of the Santa Ana River 2111:Westminster Avenue/17th Street (Santa Ana) 2055:Adams Avenue (Costa Mesa/Huntington Beach) 1842:, was designed to handle a 70-year flood. 891:List of tributaries of the Santa Ana River 749:from the south and passes to the south of 709:The Santa Ana River rises in the southern 491:317,000 cu ft/s (9,000 m/s) 4345: 4343: 4309: 4253: 4151: 4105: 4077: 4071: 4005: 3988: 3955: 3889: 3860: 3848: 3782: 3770: 3688: 3686: 3589: 3577: 3474: 3452:Flora of the Santa Ana River and Environs 3432: 3384: 3331: 3314: 3108: 3091:National Water Quality Assessment Program 3079: 3073: 3061: 2980: 2762: 2079:Warner Avenue (Santa Ana/Fountain Valley) 1978:, and Lake Perris State Recreation Area. 587:and flows for most of its length through 58:Map of the Santa Ana River drainage basin 3647: 3354: 3352: 3350: 3348: 3346: 3344: 3342: 3340: 2935:United States Department of the Interior 2899:United States Department of the Interior 2863:United States Department of the Interior 2827:United States Department of the Interior 2688:United States Department of the Interior 2367: 2264: 1949: 1889: 1844: 1763: 1706: 1562: 1369: 1243:. Downstream of the desert was once the 1153: 1055: 963: 700: 566: 4508: 4479: 4350:New strategies for America's watersheds 4280: 4269:New strategies for America's watersheds 3549: 3445: 3443: 3441: 3262:"Project Reveals River's Likely Course" 3182:Watersheds and City/County Jurisdiction 2363:Market Street (Jurupa Valley/Riverside) 1972:Mount San Jacinto State Wilderness Area 27:Rio de los Temblores, Rio de Santa Anna 6754:Rivers of Riverside County, California 6736: 4424: 4340: 4264: 4262: 4046: 3906: 3872: 3683: 3625: 3259: 3012: 2448:commuter rail service (San Bernardino) 2256:Weir Canyon Road (Anaheim/Yorba Linda) 2198:Taft Avenue/Ball Road (Orange/Anaheim) 1686: 1658:Following the Mission Period came the 789:, it discharges into the normally dry 583:in the United States. It rises in the 5143: 4738: 4584: 4318: 3337: 2955: 2758: 2756: 579:is the largest river entirely within 432:2,650 sq mi (6,900 km) 4515:Guide to the Santa Ana River Report. 4387: 4363:"Santa Ana River Watershed Alliance" 3968: 3726:. University of California Riverside 3724:Center for Invasive Species Research 3438: 2720: 2718: 2022: 1929:U.S. Environmental Protection Agency 1495:and coastal stream areas, for food. 976:, which empties into the Pacific at 603:and flowing southwest through urban 471:224 cu ft/s (6.3 m/s) 6749:Rivers of Orange County, California 4766:Rivers of Orange County, California 4388:Mott, Patrick (December 24, 1987). 4259: 3818:. City of Santa Ana. Archived from 3509:Clarke, Svehla & Ballmer (2007) 3399: 3235:"Introduction to Talbert Watershed" 2926:Geographic Names Information System 2890:Geographic Names Information System 2854:Geographic Names Information System 2818:Geographic Names Information System 2679:Geographic Names Information System 2654:. U.S. Geological Survey. 1941–2013 2597:. U.S. Geological Survey. 1941–2013 2335:Van Buren Boulevard (Jurupa Valley) 2276: 2091:Bolsa Avenue/1st Street (Santa Ana) 1531:in the south, including all of the 13: 6774:Geography of Santa Ana, California 4576:Santa Ana River Watershed Alliance 4488:Sahagun, Louis (October 27, 2014) 3550:Sahagun, Louis (August 22, 2016). 2753: 2702: 2454:Tippecanoe Avenue (San Bernardino) 2269:The Orangewood Avenue bridge near 2156:Orangewood Avenue (Orange/Anaheim) 1711:The Santa Ana River near Riverside 16:River in California, United States 14: 6795: 4503: 3286: 2715: 2652:National Water Information System 2595:National Water Information System 2451:Orange Show Road (San Bernardino) 1558: 1093:tectonic action. Even during the 5213: 3809:"History of the Santa Ana River" 3490:. California Chaparral Institute 2985:. Wilderness Press. p. 10. 2532: 2518: 2492: 2460: 2442:Waterman Avenue (San Bernardino) 2420: 2401: 2348: 2320: 2294: 2259:Gypsum Canyon Road (Yorba Linda) 2235: 2217: 2209:Inland Empire–Orange County Line 2195:Railroad Bridge (Orange/Anaheim) 2159: 2138: 2123: 2058: 2035: 2027: 1954:The Santa Ana River bicycle path 1483:However, they did not establish 1461: 481:0 cu ft/s (0 m/s) 52: 33: 4571:Santa Ana Watershed Association 4453: 4418: 4381: 4355: 4274: 4247: 4217: 4187: 4157: 4145: 4111: 4099: 4065: 4040: 3926: 3883: 3866: 3854: 3776: 3764: 3738: 3712: 3619: 3583: 3571: 3543: 3502: 3480: 3468: 3426: 3378: 3280: 3253: 3227: 3201: 3172: 3095:United States Geological Survey 3067: 3055: 2974: 2949: 2931:United States Geological Survey 2913: 2895:United States Geological Survey 2877: 2859:United States Geological Survey 2823:United States Geological Survey 2684:United States Geological Survey 2201:Lincoln Avenue (Orange/Anaheim) 2192:Katella Avenue (Orange/Anaheim) 2153:Chapman Avenue (Orange/Anaheim) 1506:in the southeastern basin, the 4319:Beers, Joel (August 7, 2014). 4281:Brennan, Pat (June 19, 2009). 4026:SBC Department of Public Works 3907:Teller, H.M. (July 13, 1884). 2841: 2805: 2666: 2637: 2580: 2070:) (Costa Mesa/Fountain Valley) 1964:San Bernardino National Forest 1599:—and gave the river its name. 1442:southwestern willow flycatcher 923:Anza-Borrego Desert State Park 857:from the east before entering 373: • coordinates 292: • coordinates 214: • coordinates 149: • coordinates 1: 6779:Rivers of Southern California 4461:"Hidden Valley Wildlife Area" 2573: 2052:(Costa Mesa/Huntington Beach) 1945: 129:Physical characteristics 4127:U.S. Army Corps of Engineers 3937:Historic spots in California 3041:U.S. Army Corps of Engineers 2563:List of rivers of California 2387:Mount Vernon Avenue (Colton) 2251:Santa Ana River bicycle path 2115:Santa Ana River bicycle path 2082:Harbor Boulevard (Santa Ana) 2050:Santa Ana River bicycle path 2010: 1995:Santa Ana River bicycle path 1936:Orange County Water District 1918:, which is collected behind 1828:U.S. Army Corps of Engineers 1668:Rancho Santiago de Santa Ana 1629:Mission San Gabriel Arcangel 1290:, which transition into the 1116:of Southern California. The 1016:, and on the north with the 884: 777:with considerable greenery. 412: • elevation 335:6,991 ft (2,131 m) 331: • elevation 257:7,900 ft (2,400 m) 253: • elevation 192:8,650 ft (2,640 m) 188: • elevation 7: 6324:Anaheim–Santa Ana edge city 4559:GPX (secondary coordinates) 4425:Holman, Bob (August 2006). 3873:Bolton, Herbert E. (1927). 3454:. Heyday Books. p. 4. 3360:"Santa Ana River Watershed" 3154:"Santa Ana River Watershed" 2981:Mitchell, Patrick (2006a). 2763:Mitchell, Patrick (2006b). 2511: 2360:) (Jurupa Valley/Riverside) 2314:River Road (Norco/Eastvale) 2108:Fairview Street (Santa Ana) 2088:McFadden Avenue (Santa Ana) 1912:wastewater treatment plants 1760:Floods, droughts and legacy 1587:It was not until 1769 that 1311:trees—mostly small gnarled 841:of the north Orange County 450: • location 357: • location 279: • location 10: 6800: 2526:Greater Los Angeles portal 2085:Edinger Avenue (Santa Ana) 1649:Secularization Act of 1833 1456: 1149: 1051: 888: 487: • maximum 477: • minimum 467: • average 6588: 6482: 6314: 6239: 6149: 5978: 5767: 5466: 5310: 5249: 5233: 5222: 5211: 5177: 5091: 5002: 4959: 4890: 4821: 4772: 4619: 4554:GPX (primary coordinates) 4529:Map all coordinates using 3669:10.1007/s10592-008-9712-0 2712:, accessed March 16, 2011 2457:Alabama Street (Redlands) 2439:E Street (San Bernardino) 2375:Riverside Avenue (Colton) 2342:(Jurupa Valley/Riverside) 2284:Green River Road (Corona) 2232:Lakeview Avenue (Anaheim) 1960:Cleveland National Forest 1886:Pollution and restoration 1840:Prado Flood Control Basin 1815:Los Angeles flood of 1938 1569:Rancho Cañón de Santa Ana 696: 541: 512: 504: 499: 495: 485: 475: 465: 448: 440: 436: 428: 420: 410: 371: 355: 343: 339: 329: 290: 277: 269: 265: 261: 251: 212: 204: 200: 196: 186: 147: 137: 133: 128: 106: 88: 78: 68: 63: 51: 32: 23: 6784:Watersheds of California 6764:San Bernardino Mountains 6301:West Whittier-Los Nietos 5171:Greater Los Angeles Area 4611:Major rivers of coastal 4537:Download coordinates as: 4521: 4022:"Seven Oaks Dam Project" 3913:University of California 2568:List of watershed topics 2475:Orange Street (Redlands) 2384:Railroad Bridge (Colton) 2378:La Cadena Drive (Colton) 2271:Angel Stadium of Anaheim 2099:Pacific Electric Railway 1772:. This view, taken by a 1192:, the increasingly rare 980:. In Orange County, the 711:San Bernardino Mountains 585:San Bernardino Mountains 543: • right 273:San Bernardino Mountains 5124:Segunda Deshecha Cañada 4961:Aliso Creek tributaries 4911:Santa Ana-Delhi Channel 4813:North Fork Coyote Creek 4229:Santa Ana River Project 4199:Santa Ana River Project 4169:Santa Ana River Project 4028:. San Bernardino County 2214:Tustin Avenue (Anaheim) 2101:Railway Bridge (future 1968:Angeles National Forest 1581:Juan Rodriguez Cabrillo 1134:Wisconsinian Glaciation 1020:, which flows into the 861:. After crossing under 514: • left 6565:Santa Susana Mountains 6560:Santa Monica Mountains 6409:Palos Verdes Peninsula 5910:Rancho Santa Margarita 4291:Orange County Register 3626:Asbury, David (2008). 3294:Orange County Register 3013:Asbury, David (2008). 2273: 2094:5th Street (Santa Ana) 1976:Chino Hills State Park 1955: 1934:In Orange County, the 1895: 1850: 1781: 1712: 1572: 1379: 1160: 1065: 969: 871:Huntington State Beach 706: 572: 395:33.62806°N 117.95861°W 314:34.15000°N 116.77167°W 236:34.13500°N 116.73972°W 171:34.15389°N 116.68889°W 6713:Santa Margarita River 6555:Santa Catalina Island 6545:San Jacinto Mountains 6535:San Gabriel Mountains 6490:Baldwin Hills (range) 6424:San Bernardino Valley 6399:Northwest Los Angeles 6394:Northeast Los Angeles 6212:Rolling Hills Estates 5114:Prima Deshecha Cañada 5053:Live Oak Canyon Creek 4699:Santa Margarita River 4549:GPX (all coordinates) 4195:"Project Description" 4052:San Diego Earth Times 3694:"Habitat Restoration" 3657:Conservation Genetics 2956:Schad, Jerry (2005). 2766:Santa Ana River Guide 2484:Santa Ana Canyon Road 2369:San Bernardino County 2317:Hamner Avenue (Norco) 2268: 1953: 1893: 1848: 1767: 1710: 1566: 1525:San Gabriel Mountains 1373: 1255:zones, consisting of 1157: 1064:is in the background. 1059: 998:Santa Margarita River 967: 773:the river supports a 739:San Bernardino County 723:San Gorgonio Mountain 704: 570: 285:San Bernardino County 6653:Los Angeles Aqueduct 6474:Westside Los Angeles 6444:Santa Clarita Valley 6354:Downtown Los Angeles 6096:Palos Verdes Estates 6056:La Cañada Flintridge 5073:Tijeras Canyon Creek 5063:Morrell Canyon Creek 4979:English Canyon Creek 4509:Archival collections 4441:on December 23, 2009 4235:on February 24, 2012 4205:on February 24, 2012 4123:Los Angeles District 3752:on September 6, 2009 3531:on September 6, 2009 3525:"Endangered Species" 3488:"What is Chaparral?" 3366:on February 21, 2011 3125:on September 5, 2010 2133:Garden Grove Freeway 1776:photographer from a 1742:California Gold Rush 1693:Mexican–American War 1633:Mission San Luis Rey 1430:brown-headed cowbird 1104:Diverse and complex 839:groundwater recharge 801:from the north, and 793:reservoir formed by 763:groundwater recharge 416:0 ft (0 m) 400:33.62806; -117.95861 319:34.15000; -116.77167 241:34.13500; -116.73972 176:34.15389; -116.68889 6769:Santa Ana Mountains 6570:Sierra Pelona Ridge 6550:Santa Ana Mountains 6530:San Fernando Valley 6429:San Fernando Valley 6374:Greater Los Angeles 6334:Central Los Angeles 5925:San Juan Capistrano 5905:Rancho Palos Verdes 5099:Bolsa Chica Channel 4969:Aliso Hills Channel 4613:Southern California 4119:"Prado Dam Project" 4047:Bainbridge, David. 3700:on February 3, 2010 3160:on February 3, 2010 3043:. February 27, 2009 2165:State Route 57 1786:Great Flood of 1862 1717:California Republic 1687:American settlement 1220:species, including 1012:, flowing into the 951:Diamond Valley Lake 757:from the north and 597:Santa Ana Mountains 581:Southern California 571:Map Santa Ana River 500:Basin features 391: / 310: / 232: / 167: / 6540:San Gabriel Valley 6520:Palos Verdes Hills 6434:San Gabriel Valley 5835:Desert Hot Springs 5058:Lucas Canyon Creek 5033:Falls Canyon Creek 5023:Cold Springs Creek 5018:Cañada Gobernadora 4931:Peters Canyon Wash 4709:San Dieguito River 4704:San Luis Rey River 4400:Orange County Life 4297:on August 22, 2009 3746:"Invasive Species" 2937:. January 19, 1981 2901:. January 19, 1981 2865:. January 19, 1981 2829:. January 19, 1981 2690:. January 19, 1981 2436:) (San Bernardino) 2274: 2178:Orange County Line 2171:) (Orange/Anaheim) 1956: 1896: 1851: 1782: 1713: 1573: 1438:least Bell's vireo 1398:, City Creek, and 1380: 1355:and is lined with 1245:coastal sage scrub 1190:coastal sage scrub 1161: 1066: 1002:San Luis Rey River 970: 707: 663:Portola expedition 573: 283:Santa Ana Canyon, 6731: 6730: 6708:Santa Clara River 6688:San Gabriel River 6658:Los Angeles River 6580:Verdugo Mountains 6510:Los Angeles Basin 6464:South Los Angeles 6459:South Coast Metro 6419:Saddleback Valley 6369:Greater Hollywood 6235: 6234: 5137: 5136: 5048:Hot Springs Creek 4994:Wood Canyon Creek 4921:Marshburn Channel 4901:Agua Chinon Creek 4832:Black Star Canyon 4774:San Gabriel River 4732: 4731: 4684:San Jacinto River 4669:San Gabriel River 4659:Los Angeles River 4654:Dominguez Channel 4629:Santa Clara River 4494:Los Angeles Times 4395:Los Angeles Times 4165:"Project History" 4133:on March 11, 2007 3972:Los Angeles Times 3785:, pp. 33–34. 3580:, pp. 21–22. 3557:Los Angeles Times 3477:, pp. 23–25. 3461:978-1-59714-050-8 3400:Colburn, Ivan P. 3260:Fehrehbach, Jed. 3241:on April 27, 2009 3087:"Santa Ana Basin" 2849:"Heart Bar Creek" 2776:978-0-89997-616-7 2738:978-1-938770-67-8 2674:"Santa Ana River" 2540:California portal 2508: 2507: 2434:Riverside Freeway 2227:Riverside Freeway 2186:Pacific Surfliner 2148:Santa Ana Freeway 2068:San Diego Freeway 1832:Mississippi River 1795:Mississippi River 1774:Los Angeles Times 1589:Gaspar de Portolà 1533:Los Angeles Basin 1404:San Jacinto River 1305:Upper Newport Bay 1233:San Jacinto River 1139:antecedent stream 1127:Peninsular Ranges 1114:Transverse Ranges 1110:San Andreas Fault 974:San Gabriel River 907:San Jacinto River 898:San Antonio Creek 835:spreading grounds 811:San Jacinto River 809:, into which the 759:San Timoteo Creek 632:San Jacinto River 565: 564: 532:San Jacinto River 523:San Timoteo Creek 270:Source confluence 6791: 6718:Santa Monica Bay 6603:Arroyo Calabasas 6439:Santa Ana Valley 6359:East Los Angeles 6339:Coachella Valley 6271:Hacienda Heights 6256:East Los Angeles 6227:Westlake Village 6192:La Habra Heights 6172:City of Industry 6121:Santa Fe Springs 6046:Hawaiian Gardens 5955:Twentynine Palms 5589:Hacienda Heights 5418:Rancho Cucamonga 5358:Huntington Beach 5231: 5230: 5217: 5164: 5157: 5150: 5141: 5140: 4946:Sand Canyon Wash 4941:San Joaquin Wash 4906:Bee Canyon Creek 4872:Silverado Canyon 4857:Limestone Canyon 4759: 4752: 4745: 4736: 4735: 4719:Sweetwater River 4605: 4598: 4591: 4582: 4581: 4497: 4486: 4477: 4476: 4474: 4472: 4467:on March 2, 2009 4457: 4451: 4450: 4448: 4446: 4440: 4433: 4422: 4416: 4415: 4413: 4411: 4406:on July 30, 2009 4402:. Archived from 4385: 4379: 4378: 4376: 4374: 4359: 4353: 4347: 4338: 4337: 4335: 4333: 4316: 4307: 4306: 4304: 4302: 4293:. Archived from 4278: 4272: 4266: 4257: 4254:Mitchell (2006a) 4251: 4245: 4244: 4242: 4240: 4225:"Seven Oaks Dam" 4221: 4215: 4214: 4212: 4210: 4191: 4185: 4184: 4182: 4180: 4175:on July 13, 2010 4161: 4155: 4152:Mitchell (2006a) 4149: 4143: 4142: 4140: 4138: 4129:. Archived from 4115: 4109: 4106:Mitchell (2006a) 4103: 4097: 4096: 4094: 4092: 4081: 4075: 4072:Mitchell (2006a) 4069: 4063: 4062: 4060: 4058: 4044: 4038: 4037: 4035: 4033: 4018: 4009: 4006:Mitchell (2006a) 4003: 3992: 3989:Mitchell (2006a) 3986: 3977: 3976: 3966: 3953: 3952: 3940: 3930: 3924: 3923: 3921: 3919: 3904: 3893: 3890:Mitchell (2006a) 3887: 3881: 3880: 3870: 3864: 3861:Mitchell (2006a) 3858: 3852: 3849:Mitchell (2006a) 3846: 3835: 3834: 3832: 3830: 3825:on July 20, 2011 3824: 3813: 3805: 3786: 3783:Mitchell (2006a) 3780: 3774: 3771:Mitchell (2006a) 3768: 3762: 3761: 3759: 3757: 3742: 3736: 3735: 3733: 3731: 3716: 3710: 3709: 3707: 3705: 3690: 3681: 3680: 3663:(5): 1321–1336. 3651: 3645: 3644: 3642: 3640: 3634: 3623: 3617: 3616: 3614: 3606: 3593: 3590:Mitchell (2006a) 3587: 3581: 3578:Mitchell (2006a) 3575: 3569: 3568: 3566: 3564: 3547: 3541: 3540: 3538: 3536: 3521: 3512: 3506: 3500: 3499: 3497: 3495: 3484: 3478: 3475:Mitchell (2006a) 3472: 3466: 3465: 3447: 3436: 3433:Mitchell (2006a) 3430: 3424: 3423: 3421: 3419: 3413: 3406: 3397: 3388: 3385:Mitchell (2006a) 3382: 3376: 3375: 3373: 3371: 3356: 3335: 3332:Mitchell (2006a) 3329: 3318: 3315:Mitchell (2006a) 3312: 3303: 3302: 3301:on May 25, 2011. 3297:. Archived from 3284: 3278: 3277: 3275: 3273: 3266:ArcUser Magazine 3257: 3251: 3250: 3248: 3246: 3231: 3225: 3224: 3222: 3220: 3215:on June 27, 2009 3205: 3199: 3198: 3196: 3194: 3189:on June 26, 2009 3176: 3170: 3169: 3167: 3165: 3150: 3135: 3134: 3132: 3130: 3115: 3106: 3105: 3103: 3101: 3083: 3077: 3074:Mitchell (2006a) 3071: 3065: 3062:Mitchell (2006a) 3059: 3053: 3052: 3050: 3048: 3038: 3028: 3019: 3018: 3010: 2997: 2996: 2978: 2972: 2971: 2953: 2947: 2946: 2944: 2942: 2917: 2911: 2910: 2908: 2906: 2881: 2875: 2874: 2872: 2870: 2845: 2839: 2838: 2836: 2834: 2809: 2803: 2802: 2796: 2788: 2760: 2751: 2750: 2722: 2713: 2710:The National Map 2706: 2700: 2699: 2697: 2695: 2670: 2664: 2663: 2661: 2659: 2649: 2641: 2635: 2634: 2616: 2607: 2606: 2604: 2602: 2592: 2584: 2542: 2537: 2536: 2535: 2528: 2523: 2522: 2521: 2496: 2495: 2470:Foothill Freeway 2464: 2463: 2424: 2423: 2415:Redlands Freeway 2405: 2404: 2352: 2351: 2324: 2323: 2298: 2297: 2289:91/Perris Valley 2278:Riverside County 2245:Imperial Highway 2239: 2238: 2221: 2220: 2189:(Orange/Anaheim) 2163: 2162: 2142: 2141: 2127: 2126: 2062: 2061: 2039: 2038: 2023: 2000:city of Redlands 1778:United Air Lines 1770:Santa Ana Canyon 1697:Bear Flag Revolt 1617:Saint Anne's Day 1527:in the north to 1363:and ends at the 1297:Santa Ana sucker 1216:species, and 15 1078:sedimentary rock 1010:Coachella Valley 1006:Whitewater River 875:Huntington Beach 827:Santa Ana Canyon 753:, then receives 743:Riverside County 601:Santa Ana Canyon 544: 515: 488: 478: 468: 451: 406: 405: 403: 402: 401: 396: 392: 389: 388: 387: 384: 362:Huntington Beach 332: 325: 324: 322: 321: 320: 315: 311: 308: 307: 306: 303: 293: 280: 254: 247: 246: 244: 243: 242: 237: 233: 230: 229: 228: 225: 215: 189: 182: 181: 179: 178: 177: 172: 168: 165: 164: 163: 160: 150: 56: 37: 21: 20: 6799: 6798: 6794: 6793: 6792: 6790: 6789: 6788: 6744:Santa Ana River 6734: 6733: 6732: 6727: 6703:Santa Ana River 6590: 6584: 6505:Hollywood Hills 6495:Channel Islands 6478: 6344:Colorado Desert 6329:Antelope Valley 6316: 6310: 6296:Temescal Valley 6286:Rowland Heights 6261:Florence-Graham 6243: 6231: 6145: 5974: 5870:Manhattan Beach 5763: 5574:Fountain Valley 5462: 5306: 5245: 5226: 5224: 5218: 5209: 5173: 5168: 5138: 5133: 5129:Talbert Channel 5087: 4998: 4955: 4936:San Diego Creek 4926:La Cañada Creek 4886: 4882:Williams Canyon 4862:Modjeska Canyon 4823:Santa Ana River 4817: 4798:Fullerton Creek 4768: 4763: 4733: 4728: 4714:San Diego River 4694:San Mateo Creek 4679:Santa Ana River 4634:Calleguas Creek 4615: 4609: 4567: 4566: 4565: 4564: 4563: 4524: 4511: 4506: 4501: 4500: 4487: 4480: 4470: 4468: 4459: 4458: 4454: 4444: 4442: 4438: 4431: 4423: 4419: 4409: 4407: 4386: 4382: 4372: 4370: 4369:on May 18, 2006 4361: 4360: 4356: 4348: 4341: 4331: 4329: 4317: 4310: 4300: 4298: 4279: 4275: 4267: 4260: 4252: 4248: 4238: 4236: 4223: 4222: 4218: 4208: 4206: 4193: 4192: 4188: 4178: 4176: 4163: 4162: 4158: 4150: 4146: 4136: 4134: 4117: 4116: 4112: 4104: 4100: 4090: 4088: 4083: 4082: 4078: 4070: 4066: 4056: 4054: 4045: 4041: 4031: 4029: 4020: 4019: 4012: 4004: 3995: 3987: 3980: 3967: 3956: 3949: 3931: 3927: 3917: 3915: 3905: 3896: 3888: 3884: 3871: 3867: 3859: 3855: 3847: 3838: 3828: 3826: 3822: 3811: 3807: 3806: 3789: 3781: 3777: 3769: 3765: 3755: 3753: 3744: 3743: 3739: 3729: 3727: 3718: 3717: 3713: 3703: 3701: 3692: 3691: 3684: 3652: 3648: 3638: 3636: 3632: 3624: 3620: 3612: 3608: 3607: 3596: 3588: 3584: 3576: 3572: 3562: 3560: 3548: 3544: 3534: 3532: 3523: 3522: 3515: 3507: 3503: 3493: 3491: 3486: 3485: 3481: 3473: 3469: 3462: 3448: 3439: 3431: 3427: 3417: 3415: 3414:on June 2, 2010 3411: 3404: 3398: 3391: 3383: 3379: 3369: 3367: 3358: 3357: 3338: 3330: 3321: 3313: 3306: 3285: 3281: 3271: 3269: 3258: 3254: 3244: 3242: 3233: 3232: 3228: 3218: 3216: 3207: 3206: 3202: 3192: 3190: 3177: 3173: 3163: 3161: 3152: 3151: 3138: 3128: 3126: 3117: 3116: 3109: 3099: 3097: 3085: 3084: 3080: 3072: 3068: 3060: 3056: 3046: 3044: 3036: 3030: 3029: 3022: 3011: 3000: 2993: 2979: 2975: 2968: 2954: 2950: 2940: 2938: 2919: 2918: 2914: 2904: 2902: 2883: 2882: 2878: 2868: 2866: 2847: 2846: 2842: 2832: 2830: 2811: 2810: 2806: 2790: 2789: 2777: 2761: 2754: 2739: 2723: 2716: 2707: 2703: 2693: 2691: 2672: 2671: 2667: 2657: 2655: 2647: 2643: 2642: 2638: 2631: 2617: 2610: 2600: 2598: 2590: 2586: 2585: 2581: 2576: 2538: 2533: 2531: 2524: 2519: 2517: 2514: 2509: 2493: 2466:State Route 210 2461: 2421: 2402: 2372: 2349: 2330:Ontario Freeway 2321: 2295: 2281: 2236: 2218: 2160: 2139: 2124: 2059: 2036: 2032: 2013: 1948: 1914:and dry season 1888: 1762: 1689: 1593:Alta California 1561: 1464: 1459: 1384:anadromous fish 1222:steelhead trout 1194:riparian forest 1170:subalpine zones 1152: 1054: 1022:endorheic basin 994:San Mateo Creek 982:San Diego Creek 919:Colorado Desert 893: 887: 867:Fountain Valley 825:via the narrow 699: 577:Santa Ana River 542: 530: 513: 486: 476: 466: 449: 413: 399: 397: 393: 390: 385: 382: 380: 378: 377: 374: 358: 330: 318: 316: 312: 309: 304: 301: 299: 297: 296: 291: 278: 252: 240: 238: 234: 231: 226: 223: 221: 219: 218: 213: 208:Heart Bar Creek 187: 175: 173: 169: 166: 161: 158: 156: 154: 153: 148: 59: 47: 28: 25: 24:Santa Ana River 17: 12: 11: 5: 6797: 6787: 6786: 6781: 6776: 6771: 6766: 6761: 6756: 6751: 6746: 6729: 6728: 6726: 6725: 6720: 6715: 6710: 6705: 6700: 6695: 6693:San Juan Creek 6690: 6685: 6680: 6675: 6670: 6665: 6660: 6655: 6650: 6645: 6640: 6635: 6633:Lake Arrowhead 6630: 6625: 6620: 6615: 6610: 6605: 6600: 6594: 6592: 6586: 6585: 6583: 6582: 6577: 6572: 6567: 6562: 6557: 6552: 6547: 6542: 6537: 6532: 6527: 6522: 6517: 6512: 6507: 6502: 6497: 6492: 6486: 6484: 6480: 6479: 6477: 6476: 6471: 6466: 6461: 6456: 6451: 6446: 6441: 6436: 6431: 6426: 6421: 6416: 6411: 6406: 6401: 6396: 6391: 6386: 6381: 6376: 6371: 6366: 6364:Gateway Cities 6361: 6356: 6351: 6346: 6341: 6336: 6331: 6326: 6320: 6318: 6312: 6311: 6309: 6308: 6303: 6298: 6293: 6291:South Whittier 6288: 6283: 6278: 6273: 6268: 6263: 6258: 6253: 6247: 6245: 6237: 6236: 6233: 6232: 6230: 6229: 6224: 6219: 6214: 6209: 6204: 6199: 6194: 6189: 6184: 6179: 6174: 6169: 6164: 6159: 6153: 6151: 6147: 6146: 6144: 6143: 6138: 6136:South El Monte 6133: 6128: 6123: 6118: 6113: 6108: 6103: 6098: 6093: 6088: 6083: 6078: 6073: 6068: 6063: 6058: 6053: 6048: 6043: 6038: 6033: 6028: 6023: 6018: 6013: 6008: 6003: 5998: 5993: 5988: 5982: 5980: 5976: 5975: 5973: 5972: 5967: 5965:West Hollywood 5962: 5957: 5952: 5947: 5942: 5940:South Pasadena 5937: 5932: 5927: 5922: 5917: 5912: 5907: 5902: 5897: 5892: 5887: 5882: 5877: 5872: 5867: 5862: 5857: 5852: 5847: 5842: 5837: 5832: 5827: 5822: 5817: 5812: 5807: 5802: 5797: 5792: 5787: 5782: 5777: 5771: 5769: 5765: 5764: 5762: 5761: 5756: 5751: 5746: 5741: 5736: 5731: 5726: 5721: 5716: 5711: 5706: 5701: 5696: 5691: 5686: 5681: 5676: 5671: 5666: 5661: 5656: 5651: 5646: 5641: 5636: 5631: 5626: 5621: 5616: 5611: 5606: 5601: 5596: 5591: 5586: 5581: 5576: 5571: 5566: 5561: 5556: 5551: 5546: 5541: 5536: 5531: 5529:Cathedral City 5526: 5521: 5516: 5511: 5506: 5501: 5496: 5491: 5486: 5481: 5476: 5470: 5468: 5464: 5463: 5461: 5460: 5455: 5450: 5445: 5440: 5435: 5430: 5425: 5420: 5415: 5410: 5405: 5400: 5395: 5390: 5385: 5380: 5375: 5370: 5365: 5360: 5355: 5350: 5345: 5340: 5335: 5330: 5325: 5320: 5314: 5312: 5308: 5307: 5305: 5304: 5299: 5294: 5292:San Bernardino 5289: 5284: 5279: 5274: 5269: 5264: 5259: 5253: 5251: 5247: 5246: 5244: 5243: 5237: 5235: 5228: 5220: 5219: 5212: 5210: 5208: 5207: 5202: 5200:San Bernardino 5197: 5192: 5187: 5181: 5179: 5175: 5174: 5167: 5166: 5159: 5152: 5144: 5135: 5134: 5132: 5131: 5126: 5121: 5116: 5111: 5106: 5101: 5095: 5093: 5089: 5088: 5086: 5085: 5083:Trampas Canyon 5080: 5078:Arroyo Trabuco 5075: 5070: 5065: 5060: 5055: 5050: 5045: 5043:Holy Jim Creek 5040: 5035: 5030: 5028:El Horno Creek 5025: 5020: 5015: 5009: 5007: 5004:San Juan Creek 5000: 4999: 4997: 4996: 4991: 4986: 4981: 4976: 4971: 4965: 4963: 4957: 4956: 4954: 4953: 4948: 4943: 4938: 4933: 4928: 4923: 4918: 4913: 4908: 4903: 4897: 4895: 4888: 4887: 4885: 4884: 4879: 4874: 4869: 4867:Santiago Creek 4864: 4859: 4854: 4852:Harding Canyon 4849: 4844: 4842:Fremont Canyon 4839: 4834: 4828: 4826: 4819: 4818: 4816: 4815: 4810: 4805: 4803:Imperial Creek 4800: 4795: 4790: 4785: 4779: 4777: 4770: 4769: 4762: 4761: 4754: 4747: 4739: 4730: 4729: 4727: 4726: 4721: 4716: 4711: 4706: 4701: 4696: 4691: 4689:San Juan Creek 4686: 4681: 4676: 4671: 4666: 4661: 4656: 4651: 4646: 4641: 4636: 4631: 4626: 4620: 4617: 4616: 4608: 4607: 4600: 4593: 4585: 4579: 4578: 4573: 4562: 4561: 4556: 4551: 4546: 4540: 4527: 4526: 4525: 4523: 4520: 4519: 4518: 4510: 4507: 4505: 4504:External links 4502: 4499: 4498: 4478: 4452: 4417: 4380: 4354: 4339: 4308: 4273: 4258: 4246: 4216: 4186: 4156: 4144: 4110: 4098: 4076: 4064: 4039: 4010: 3993: 3978: 3954: 3947: 3925: 3894: 3882: 3865: 3853: 3836: 3787: 3775: 3763: 3737: 3711: 3682: 3646: 3618: 3594: 3582: 3570: 3542: 3513: 3501: 3479: 3467: 3460: 3437: 3425: 3389: 3377: 3336: 3319: 3304: 3287:Brown, Scott. 3279: 3252: 3226: 3200: 3171: 3136: 3107: 3078: 3066: 3054: 3020: 2998: 2991: 2973: 2966: 2948: 2912: 2876: 2840: 2804: 2775: 2752: 2737: 2714: 2701: 2665: 2636: 2629: 2608: 2578: 2577: 2575: 2572: 2571: 2570: 2565: 2560: 2555: 2550: 2544: 2543: 2529: 2513: 2510: 2506: 2505: 2501: 2500: 2498:State Route 38 2490: 2488:Seven Oaks Dam 2485: 2482: 2479:Greenspot Road 2476: 2473: 2458: 2455: 2452: 2449: 2443: 2440: 2437: 2430:San Bernardino 2426:Interstate 215 2418: 2411:San Bernardino 2399: 2392:Sunset Limited 2388: 2385: 2382: 2379: 2376: 2371: 2366: 2365: 2364: 2361: 2358:Pomona Freeway 2354:State Route 60 2346: 2343: 2340:Riverside Line 2336: 2333: 2318: 2315: 2312: 2307: 2304:Corona Freeway 2300:State Route 71 2292: 2285: 2280: 2275: 2262: 2261: 2260: 2257: 2254: 2248: 2241:State Route 90 2233: 2230: 2223:State Route 91 2215: 2212: 2205: 2202: 2199: 2196: 2193: 2190: 2172: 2169:Orange Freeway 2157: 2154: 2151: 2136: 2129:State Route 22 2121: 2118: 2112: 2109: 2106: 2095: 2092: 2089: 2086: 2083: 2080: 2077: 2074: 2071: 2064:Interstate 405 2056: 2053: 2047: 2044: 2031: 2026: 2021: 2012: 2009: 1947: 1944: 1900:Seven Oaks Dam 1887: 1884: 1761: 1758: 1730:San Bernardino 1688: 1685: 1621:Santiago Creek 1560: 1559:Spanish period 1557: 1521:coastal plains 1463: 1460: 1458: 1455: 1408:Santiago Creek 1392:Santiago Creek 1376:Seven Oaks Dam 1361:Seven Oaks Dam 1333:lodgepole pine 1325:ponderosa pine 1292:riparian zones 1265:mountain lions 1257:sclerophyllous 1241:Central Valley 1237:Temescal Creek 1151: 1148: 1122:Whittier Fault 1053: 1050: 1046:Newport Harbor 1037:drainage basin 990:San Juan Creek 915:Temescal Creek 886: 883: 855:Santiago Creek 803:Temescal Creek 751:San Bernardino 745:. It receives 735:Seven Oaks Dam 698: 695: 687:channelization 671:Santiago Creek 636:riparian zones 609:drainage basin 589:San Bernardino 563: 562: 545: 539: 538: 536:Santiago Creek 527:Temescal Creek 516: 510: 509: 506: 502: 501: 497: 496: 493: 492: 489: 483: 482: 479: 473: 472: 469: 463: 462: 452: 446: 445: 442: 438: 437: 434: 433: 430: 426: 425: 422: 418: 417: 414: 411: 408: 407: 375: 372: 369: 368: 359: 356: 353: 352: 347: 341: 340: 337: 336: 333: 327: 326: 294: 288: 287: 281: 275: 274: 271: 267: 266: 263: 262: 259: 258: 255: 249: 248: 216: 210: 209: 206: 202: 201: 198: 197: 194: 193: 190: 184: 183: 151: 145: 144: 139: 135: 134: 131: 130: 126: 125: 111:San Bernardino 108: 104: 103: 93:San Bernardino 90: 86: 85: 80: 76: 75: 70: 66: 65: 61: 60: 57: 49: 48: 38: 30: 29: 26: 15: 9: 6: 4: 3: 2: 6796: 6785: 6782: 6780: 6777: 6775: 6772: 6770: 6767: 6765: 6762: 6760: 6757: 6755: 6752: 6750: 6747: 6745: 6742: 6741: 6739: 6724: 6721: 6719: 6716: 6714: 6711: 6709: 6706: 6704: 6701: 6699: 6698:San Pedro Bay 6696: 6694: 6691: 6689: 6686: 6684: 6681: 6679: 6676: 6674: 6673:Pacific Ocean 6671: 6669: 6666: 6664: 6661: 6659: 6656: 6654: 6651: 6649: 6646: 6644: 6641: 6639: 6636: 6634: 6631: 6629: 6626: 6624: 6623:Big Bear Lake 6621: 6619: 6616: 6614: 6613:Ballona Creek 6611: 6609: 6606: 6604: 6601: 6599: 6596: 6595: 6593: 6587: 6581: 6578: 6576: 6573: 6571: 6568: 6566: 6563: 6561: 6558: 6556: 6553: 6551: 6548: 6546: 6543: 6541: 6538: 6536: 6533: 6531: 6528: 6526: 6523: 6521: 6518: 6516: 6513: 6511: 6508: 6506: 6503: 6501: 6498: 6496: 6493: 6491: 6488: 6487: 6485: 6481: 6475: 6472: 6470: 6469:Victor Valley 6467: 6465: 6462: 6460: 6457: 6455: 6452: 6450: 6447: 6445: 6442: 6440: 6437: 6435: 6432: 6430: 6427: 6425: 6422: 6420: 6417: 6415: 6414:Pomona Valley 6412: 6410: 6407: 6405: 6402: 6400: 6397: 6395: 6392: 6390: 6389:Mojave Desert 6387: 6385: 6384:Inland Empire 6382: 6380: 6377: 6375: 6372: 6370: 6367: 6365: 6362: 6360: 6357: 6355: 6352: 6350: 6349:Conejo Valley 6347: 6345: 6342: 6340: 6337: 6335: 6332: 6330: 6327: 6325: 6322: 6321: 6319: 6313: 6307: 6304: 6302: 6299: 6297: 6294: 6292: 6289: 6287: 6284: 6282: 6279: 6277: 6274: 6272: 6269: 6267: 6266:French Valley 6264: 6262: 6259: 6257: 6254: 6252: 6249: 6248: 6246: 6242: 6238: 6228: 6225: 6223: 6220: 6218: 6215: 6213: 6210: 6208: 6207:Rolling Hills 6205: 6203: 6200: 6198: 6195: 6193: 6190: 6188: 6185: 6183: 6180: 6178: 6175: 6173: 6170: 6168: 6165: 6163: 6162:Big Bear Lake 6160: 6158: 6155: 6154: 6152: 6148: 6142: 6139: 6137: 6134: 6132: 6129: 6127: 6124: 6122: 6119: 6117: 6114: 6112: 6109: 6107: 6106:Rancho Mirage 6104: 6102: 6099: 6097: 6094: 6092: 6089: 6087: 6084: 6082: 6079: 6077: 6074: 6072: 6069: 6067: 6064: 6062: 6059: 6057: 6054: 6052: 6051:Hermosa Beach 6049: 6047: 6044: 6042: 6041:Grand Terrace 6039: 6037: 6034: 6032: 6029: 6027: 6024: 6022: 6019: 6017: 6014: 6012: 6009: 6007: 6004: 6002: 5999: 5997: 5994: 5992: 5989: 5987: 5984: 5983: 5981: 5977: 5971: 5968: 5966: 5963: 5961: 5958: 5956: 5953: 5951: 5948: 5946: 5943: 5941: 5938: 5936: 5933: 5931: 5928: 5926: 5923: 5921: 5918: 5916: 5913: 5911: 5908: 5906: 5903: 5901: 5898: 5896: 5893: 5891: 5888: 5886: 5883: 5881: 5878: 5876: 5873: 5871: 5868: 5866: 5863: 5861: 5858: 5856: 5853: 5851: 5848: 5846: 5843: 5841: 5838: 5836: 5833: 5831: 5828: 5826: 5823: 5821: 5818: 5816: 5813: 5811: 5808: 5806: 5803: 5801: 5800:Beverly Hills 5798: 5796: 5793: 5791: 5788: 5786: 5783: 5781: 5778: 5776: 5773: 5772: 5770: 5766: 5760: 5757: 5755: 5752: 5750: 5747: 5745: 5742: 5740: 5737: 5735: 5732: 5730: 5727: 5725: 5722: 5720: 5717: 5715: 5712: 5710: 5707: 5705: 5704:Redondo Beach 5702: 5700: 5697: 5695: 5692: 5690: 5687: 5685: 5682: 5680: 5677: 5675: 5672: 5670: 5669:Newport Beach 5667: 5665: 5664:Monterey Park 5662: 5660: 5657: 5655: 5652: 5650: 5649:Mission Viejo 5647: 5645: 5642: 5640: 5637: 5635: 5632: 5630: 5629:Lake Elsinore 5627: 5625: 5624:Laguna Niguel 5622: 5620: 5617: 5615: 5612: 5610: 5607: 5605: 5602: 5600: 5597: 5595: 5592: 5590: 5587: 5585: 5582: 5580: 5577: 5575: 5572: 5570: 5567: 5565: 5562: 5560: 5557: 5555: 5552: 5550: 5547: 5545: 5542: 5540: 5537: 5535: 5532: 5530: 5527: 5525: 5522: 5520: 5517: 5515: 5512: 5510: 5507: 5505: 5502: 5500: 5497: 5495: 5492: 5490: 5487: 5485: 5482: 5480: 5477: 5475: 5472: 5471: 5469: 5465: 5459: 5456: 5454: 5451: 5449: 5446: 5444: 5441: 5439: 5438:Thousand Oaks 5436: 5434: 5431: 5429: 5426: 5424: 5421: 5419: 5416: 5414: 5411: 5409: 5406: 5404: 5401: 5399: 5396: 5394: 5391: 5389: 5386: 5384: 5381: 5379: 5376: 5374: 5371: 5369: 5368:Jurupa Valley 5366: 5364: 5361: 5359: 5356: 5354: 5351: 5349: 5346: 5344: 5341: 5339: 5336: 5334: 5331: 5329: 5326: 5324: 5321: 5319: 5316: 5315: 5313: 5309: 5303: 5302:Santa Clarita 5300: 5298: 5295: 5293: 5290: 5288: 5285: 5283: 5280: 5278: 5277:Moreno Valley 5275: 5273: 5270: 5268: 5265: 5263: 5260: 5258: 5255: 5254: 5252: 5248: 5242: 5239: 5238: 5236: 5232: 5229: 5221: 5216: 5206: 5203: 5201: 5198: 5196: 5193: 5191: 5188: 5186: 5183: 5182: 5180: 5176: 5172: 5165: 5160: 5158: 5153: 5151: 5146: 5145: 5142: 5130: 5127: 5125: 5122: 5120: 5117: 5115: 5112: 5110: 5107: 5105: 5102: 5100: 5097: 5096: 5094: 5090: 5084: 5081: 5079: 5076: 5074: 5071: 5069: 5066: 5064: 5061: 5059: 5056: 5054: 5051: 5049: 5046: 5044: 5041: 5039: 5036: 5034: 5031: 5029: 5026: 5024: 5021: 5019: 5016: 5014: 5011: 5010: 5008: 5005: 5001: 4995: 4992: 4990: 4989:Sulphur Creek 4987: 4985: 4982: 4980: 4977: 4975: 4972: 4970: 4967: 4966: 4964: 4962: 4958: 4952: 4951:Serrano Creek 4949: 4947: 4944: 4942: 4939: 4937: 4934: 4932: 4929: 4927: 4924: 4922: 4919: 4917: 4914: 4912: 4909: 4907: 4904: 4902: 4899: 4898: 4896: 4893: 4889: 4883: 4880: 4878: 4875: 4873: 4870: 4868: 4865: 4863: 4860: 4858: 4855: 4853: 4850: 4848: 4845: 4843: 4840: 4838: 4835: 4833: 4830: 4829: 4827: 4824: 4820: 4814: 4811: 4809: 4806: 4804: 4801: 4799: 4796: 4794: 4791: 4789: 4786: 4784: 4781: 4780: 4778: 4775: 4771: 4767: 4760: 4755: 4753: 4748: 4746: 4741: 4740: 4737: 4725: 4722: 4720: 4717: 4715: 4712: 4710: 4707: 4705: 4702: 4700: 4697: 4695: 4692: 4690: 4687: 4685: 4682: 4680: 4677: 4675: 4672: 4670: 4667: 4665: 4662: 4660: 4657: 4655: 4652: 4650: 4649:Ballona Creek 4647: 4645: 4642: 4640: 4637: 4635: 4632: 4630: 4627: 4625: 4624:Ventura River 4622: 4621: 4618: 4614: 4606: 4601: 4599: 4594: 4592: 4587: 4586: 4583: 4577: 4574: 4572: 4569: 4568: 4560: 4557: 4555: 4552: 4550: 4547: 4545: 4542: 4541: 4539: 4538: 4533: 4532:OpenStreetMap 4530: 4516: 4513: 4512: 4496: 4495: 4491: 4485: 4483: 4466: 4462: 4456: 4437: 4430: 4429: 4421: 4405: 4401: 4398:. p. 3, 4397: 4396: 4391: 4384: 4368: 4364: 4358: 4351: 4346: 4344: 4328: 4327: 4322: 4315: 4313: 4296: 4292: 4288: 4284: 4277: 4270: 4265: 4263: 4256:, p. 47. 4255: 4250: 4234: 4230: 4226: 4220: 4204: 4200: 4196: 4190: 4174: 4170: 4166: 4160: 4154:, p. 46. 4153: 4148: 4132: 4128: 4124: 4120: 4114: 4108:, p. 44. 4107: 4102: 4086: 4080: 4074:, p. 43. 4073: 4068: 4053: 4050: 4043: 4027: 4023: 4017: 4015: 4008:, p. 42. 4007: 4002: 4000: 3998: 3991:, p. 41. 3990: 3985: 3983: 3974: 3973: 3965: 3963: 3961: 3959: 3950: 3948:0-8047-4482-3 3944: 3939: 3938: 3929: 3914: 3910: 3903: 3901: 3899: 3892:, p. 38. 3891: 3886: 3878: 3877: 3869: 3863:, p. 37. 3862: 3857: 3851:, p. 36. 3850: 3845: 3843: 3841: 3821: 3817: 3810: 3804: 3802: 3800: 3798: 3796: 3794: 3792: 3784: 3779: 3773:, p. 35. 3772: 3767: 3751: 3747: 3741: 3725: 3721: 3715: 3699: 3695: 3689: 3687: 3678: 3674: 3670: 3666: 3662: 3658: 3650: 3631: 3630: 3622: 3611: 3605: 3603: 3601: 3599: 3592:, p. 55. 3591: 3586: 3579: 3574: 3559: 3558: 3553: 3546: 3530: 3526: 3520: 3518: 3510: 3505: 3489: 3483: 3476: 3471: 3463: 3457: 3453: 3446: 3444: 3442: 3435:, p. 13. 3434: 3429: 3410: 3403: 3396: 3394: 3387:, p. 15. 3386: 3381: 3370:September 12, 3365: 3361: 3355: 3353: 3351: 3349: 3347: 3345: 3343: 3341: 3334:, p. 16. 3333: 3328: 3326: 3324: 3317:, p. 17. 3316: 3311: 3309: 3300: 3296: 3295: 3290: 3283: 3267: 3263: 3256: 3240: 3236: 3230: 3214: 3210: 3204: 3188: 3184: 3183: 3175: 3159: 3155: 3149: 3147: 3145: 3143: 3141: 3124: 3120: 3114: 3112: 3096: 3092: 3088: 3082: 3076:, p. 12. 3075: 3070: 3064:, p. 11. 3063: 3058: 3042: 3035: 3034: 3027: 3025: 3016: 3009: 3007: 3005: 3003: 2994: 2992:0-89997-411-2 2988: 2984: 2977: 2969: 2967:0-89997-351-5 2963: 2959: 2952: 2936: 2932: 2928: 2927: 2922: 2916: 2900: 2896: 2892: 2891: 2886: 2885:"Dollar Lake" 2880: 2864: 2860: 2856: 2855: 2850: 2844: 2828: 2824: 2820: 2819: 2814: 2808: 2800: 2794: 2786: 2782: 2778: 2772: 2768: 2767: 2759: 2757: 2748: 2744: 2740: 2734: 2730: 2729: 2721: 2719: 2711: 2705: 2689: 2685: 2681: 2680: 2675: 2669: 2653: 2646: 2640: 2632: 2630:0-520-05035-5 2626: 2622: 2615: 2613: 2596: 2589: 2583: 2579: 2569: 2566: 2564: 2561: 2559: 2556: 2554: 2551: 2549: 2546: 2545: 2541: 2530: 2527: 2516: 2504: 2499: 2491: 2489: 2486: 2483: 2480: 2477: 2474: 2471: 2467: 2459: 2456: 2453: 2450: 2447: 2444: 2441: 2438: 2435: 2431: 2427: 2419: 2416: 2412: 2408: 2407:Interstate 10 2400: 2397: 2393: 2389: 2386: 2383: 2380: 2377: 2374: 2373: 2370: 2362: 2359: 2355: 2347: 2344: 2341: 2337: 2334: 2331: 2327: 2326:Interstate 15 2319: 2316: 2313: 2311: 2308: 2305: 2301: 2293: 2290: 2286: 2283: 2282: 2279: 2272: 2267: 2263: 2258: 2255: 2252: 2249: 2246: 2242: 2234: 2231: 2228: 2224: 2216: 2213: 2210: 2206: 2203: 2200: 2197: 2194: 2191: 2188: 2187: 2183: 2179: 2176: 2173: 2170: 2166: 2158: 2155: 2152: 2149: 2145: 2137: 2134: 2130: 2122: 2119: 2116: 2113: 2110: 2107: 2104: 2100: 2096: 2093: 2090: 2087: 2084: 2081: 2078: 2075: 2072: 2069: 2065: 2057: 2054: 2051: 2048: 2045: 2042: 2041:State Route 1 2034: 2033: 2030: 2029:Orange County 2025: 2024: 2020: 2018: 2008: 2005: 2001: 1996: 1991: 1989: 1985: 1984:Lake Elsinore 1981: 1980:Big Bear Lake 1977: 1973: 1969: 1965: 1961: 1952: 1943: 1939: 1937: 1932: 1930: 1925: 1921: 1917: 1913: 1909: 1905: 1901: 1892: 1883: 1881: 1875: 1873: 1869: 1865: 1861: 1857: 1847: 1843: 1841: 1837: 1833: 1829: 1824: 1820: 1816: 1811: 1809: 1805: 1800: 1796: 1791: 1787: 1779: 1775: 1771: 1766: 1757: 1755: 1751: 1745: 1743: 1739: 1735: 1731: 1727: 1723: 1718: 1709: 1705: 1702: 1698: 1694: 1684: 1682: 1681:Balboa Island 1678: 1673: 1669: 1665: 1661: 1660:Rancho Period 1656: 1654: 1650: 1646: 1642: 1638: 1634: 1630: 1624: 1622: 1618: 1614: 1610: 1606: 1602: 1598: 1594: 1590: 1585: 1582: 1578: 1570: 1565: 1556: 1554: 1550: 1546: 1542: 1538: 1534: 1530: 1526: 1522: 1518: 1513: 1512:Tongva people 1509: 1505: 1504:Payomkowishum 1501: 1496: 1494: 1490: 1486: 1481: 1477: 1473: 1469: 1462:First peoples 1454: 1452: 1447: 1443: 1439: 1435: 1431: 1426: 1424: 1420: 1416: 1411: 1409: 1405: 1401: 1397: 1393: 1389: 1386:, similar to 1385: 1377: 1372: 1368: 1366: 1362: 1358: 1354: 1353:rainbow trout 1350: 1346: 1342: 1338: 1334: 1330: 1326: 1322: 1318: 1314: 1308: 1306: 1302: 1298: 1293: 1289: 1285: 1280: 1278: 1274: 1270: 1266: 1262: 1258: 1254: 1250: 1246: 1242: 1238: 1234: 1230: 1225: 1223: 1219: 1215: 1211: 1207: 1203: 1199: 1195: 1191: 1187: 1183: 1179: 1175: 1171: 1167: 1156: 1147: 1145: 1140: 1135: 1130: 1128: 1123: 1119: 1115: 1111: 1107: 1102: 1100: 1096: 1091: 1088: 1083: 1079: 1075: 1071: 1063: 1062:Big Bear Lake 1058: 1049: 1047: 1043: 1038: 1034: 1029: 1027: 1026:Mojave Desert 1023: 1019: 1015: 1011: 1007: 1003: 999: 995: 991: 987: 983: 979: 975: 966: 962: 960: 959:Big Bear Lake 956: 952: 948: 944: 940: 936: 932: 926: 924: 920: 916: 912: 911:Lake Elsinore 908: 903: 902:Inland Empire 899: 892: 882: 880: 879:Newport Beach 876: 872: 868: 864: 860: 856: 852: 848: 844: 840: 836: 832: 828: 824: 820: 819:Orange County 815: 812: 808: 807:Lake Elsinore 804: 800: 796: 792: 791:flood control 788: 783: 778: 776: 775:riparian zone 772: 768: 764: 760: 756: 752: 748: 744: 740: 736: 732: 731:Big Bear Lake 728: 724: 720: 716: 712: 703: 694: 692: 688: 684: 680: 676: 672: 668: 664: 660: 656: 652: 648: 644: 639: 637: 633: 629: 625: 621: 617: 616:Inland Empire 612: 610: 606: 605:Orange County 602: 598: 594: 590: 586: 582: 578: 569: 561: 557: 553: 549: 546: 540: 537: 533: 528: 524: 520: 517: 511: 507: 503: 498: 494: 490: 484: 480: 474: 470: 464: 461: 457: 453: 447: 443: 439: 435: 431: 427: 423: 419: 415: 409: 404: 376: 370: 367: 366:Orange County 363: 360: 354: 351: 350:Pacific Ocean 348: 346: 342: 338: 334: 328: 323: 295: 289: 286: 282: 276: 272: 268: 264: 260: 256: 250: 245: 217: 211: 207: 203: 199: 195: 191: 185: 180: 152: 146: 143: 140: 136: 132: 127: 124: 120: 116: 112: 109: 105: 102: 98: 94: 91: 87: 84: 81: 77: 74: 73:United States 71: 67: 62: 55: 50: 46: 42: 36: 31: 22: 19: 6723:Tujunga Wash 6702: 6678:Pyramid Lake 6668:Mojave River 6663:Malibu Creek 6638:Lake Gregory 6628:Coyote Creek 6525:Puente Hills 6515:Oxnard Plain 6404:Orange Coast 6281:North Tustin 6276:Ladera Ranch 6182:Indian Wells 6177:Hidden Hills 6141:Yucca Valley 6126:Sierra Madre 6111:San Fernando 6101:Port Hueneme 6086:Los Alamitos 6071:Laguna Woods 6066:Laguna Beach 5986:Agoura Hills 5900:Palm Springs 5860:Laguna Hills 5795:Bell Gardens 5724:Santa Monica 5714:San Clemente 5499:Baldwin Park 5484:Apple Valley 5348:Garden Grove 5234:Central city 5038:Hickey Creek 4984:Munger Creek 4916:Bonita Creek 4837:Blind Canyon 4822: 4793:Carbon Creek 4788:Coyote Creek 4678: 4674:Coyote Creek 4664:Tujunga Wash 4639:Malibu Creek 4536: 4535: 4528: 4492: 4471:December 20, 4469:. Retrieved 4465:the original 4455: 4445:December 20, 4443:. Retrieved 4436:the original 4427: 4420: 4410:December 19, 4408:. Retrieved 4404:the original 4399: 4393: 4383: 4373:December 17, 4371:. Retrieved 4367:the original 4357: 4349: 4330:. Retrieved 4324: 4301:December 19, 4299:. Retrieved 4295:the original 4286: 4276: 4268: 4249: 4239:December 17, 4237:. Retrieved 4233:the original 4228: 4219: 4209:December 17, 4207:. Retrieved 4203:the original 4198: 4189: 4179:December 17, 4177:. Retrieved 4173:the original 4168: 4159: 4147: 4137:December 17, 4135:. Retrieved 4131:the original 4122: 4113: 4101: 4091:December 17, 4089:. Retrieved 4079: 4067: 4057:December 15, 4055:. Retrieved 4051: 4042: 4032:December 17, 4030:. Retrieved 4025: 3970: 3936: 3928: 3918:December 17, 3916:. Retrieved 3885: 3875: 3868: 3856: 3829:December 16, 3827:. Retrieved 3820:the original 3815: 3778: 3766: 3756:December 19, 3754:. Retrieved 3750:the original 3740: 3730:December 17, 3728:. Retrieved 3723: 3720:"Giant Reed" 3714: 3704:December 18, 3702:. Retrieved 3698:the original 3660: 3656: 3649: 3639:December 17, 3637:. Retrieved 3628: 3621: 3585: 3573: 3561:. Retrieved 3555: 3545: 3535:December 19, 3533:. Retrieved 3529:the original 3511:, p. 3. 3504: 3494:December 19, 3492:. Retrieved 3482: 3470: 3451: 3428: 3416:. Retrieved 3409:the original 3380: 3368:. Retrieved 3364:the original 3299:the original 3292: 3282: 3272:December 22, 3270:. Retrieved 3265: 3255: 3245:December 15, 3243:. Retrieved 3239:the original 3229: 3219:December 15, 3217:. Retrieved 3213:the original 3203: 3193:December 22, 3191:. Retrieved 3187:the original 3181: 3174: 3164:December 15, 3162:. Retrieved 3158:the original 3129:December 15, 3127:. Retrieved 3123:the original 3100:December 15, 3098:. Retrieved 3090: 3081: 3069: 3057: 3047:December 16, 3045:. Retrieved 3032: 3014: 2982: 2976: 2957: 2951: 2941:December 25, 2939:. Retrieved 2924: 2915: 2905:December 25, 2903:. Retrieved 2888: 2879: 2869:December 19, 2867:. Retrieved 2852: 2843: 2833:December 19, 2831:. Retrieved 2816: 2813:"Coon Creek" 2807: 2765: 2727: 2704: 2694:December 19, 2692:. Retrieved 2677: 2668: 2656:. Retrieved 2651: 2639: 2620: 2599:. Retrieved 2594: 2582: 2502: 2472:) (Redlands) 2184: 2144:Interstate 5 2103:OC Streetcar 2014: 1992: 1957: 1940: 1933: 1916:urban runoff 1908:agricultural 1897: 1876: 1864:urban runoff 1852: 1812: 1783: 1750:clearcutting 1746: 1714: 1690: 1657: 1625: 1595:province of 1586: 1574: 1497: 1465: 1427: 1412: 1381: 1367:confluence. 1321:Jeffrey pine 1309: 1301:salt marshes 1281: 1226: 1208:species, 13 1162: 1131: 1103: 1067: 1033:alluvial fan 1030: 1018:Mojave River 971: 955:Lake Skinner 943:Lake Mathews 927: 894: 863:Interstate 5 853:it receives 847:urban runoff 816: 779: 708: 640: 628:flash floods 613: 576: 574: 18: 6643:Lake Perris 6608:Arroyo Seco 6598:Aliso Creek 6500:Chino Hills 6449:Simi Valley 6379:Harbor Area 6131:Signal Hill 6011:Canyon Lake 5950:Temple City 5930:Santa Paula 5920:San Gabriel 5825:Culver City 5754:Yorba Linda 5744:Westminster 5719:San Jacinto 5689:Pico Rivera 5674:Palm Desert 5634:Lake Forest 5564:Diamond Bar 5539:Chino Hills 5479:Aliso Viejo 5458:West Covina 5453:Victorville 5428:Simi Valley 5241:Los Angeles 5185:Los Angeles 5109:Muddy Creek 5013:Bell Canyon 4892:Newport Bay 4877:Weir Canyon 4847:Handy Creek 4808:Moody Creek 4644:Sespe Creek 3039:(Booklet). 2396:Texas Eagle 2247:) (Anaheim) 2229:) (Anaheim) 2117:(Santa Ana) 1988:Lake Irvine 1924:groundwater 1734:Lytle Creek 1701:Los Angeles 1677:Newport Bay 1609:Juan Crespí 1529:Aliso Creek 1485:agriculture 1480:Uto-Aztecan 1451:groundwater 1396:Lytle Creek 1365:Lytle Creek 1345:black bears 1212:species, 7 1074:metamorphic 1042:Newport Bay 986:Aliso Creek 947:Lake Perris 939:Irvine Lake 931:agriculture 823:Chino Hills 799:Chino Creek 782:Lytle Creek 560:Chino Creek 556:Lytle Creek 505:Tributaries 398: / 386:117°57′31″W 317: / 305:116°46′18″W 239: / 227:116°44′23″W 174: / 162:116°41′20″W 6738:Categories 6618:Bell Creek 6575:Simi Hills 6222:Villa Park 6116:San Marino 6076:Loma Linda 6031:El Segundo 5935:Seal Beach 5830:Dana Point 5729:South Gate 5659:Montebello 5514:Buena Park 5509:Bellflower 5328:Costa Mesa 5272:Long Beach 5119:Salt Creek 5104:Buck Gully 4974:Dairy Fork 4783:Brea Creek 4724:Otay River 3563:August 23, 3418:August 18, 2921:"Dry Lake" 2574:References 2481:(Highland) 2417:) (Colton) 2338:Metrolink 2287:Metrolink 2207:Metrolink 2150:) (Orange) 2135:) (Orange) 1946:Recreation 1860:floodplain 1738:Mill Creek 1637:Gabrieliño 1613:earthquake 1601:On July 28 1500:Yuhaviatam 1493:tide pools 1415:giant reed 1400:Mill Creek 1099:glaciation 1090:batholiths 1014:Salton Sea 1000:, and the 978:Long Beach 889:See also: 755:City Creek 747:Mill Creek 727:Bear Creek 715:confluence 552:City Creek 548:Bear Creek 519:Mill Creek 429:Basin size 383:33°37′41″N 302:34°09′00″N 224:34°08′06″N 205:2nd source 159:34°09′14″N 142:Coon Creek 83:California 6683:Rio Hondo 6648:Lake Piru 6589:Bodies of 6483:Landforms 6454:South Bay 6187:Irwindale 6150:Under 10k 6001:Calabasas 5915:San Dimas 5885:Montclair 5850:La Quinta 5845:La Puente 5840:La Mirada 5820:Coachella 5815:Claremont 5694:Placentia 5679:Paramount 5594:Hawthorne 5519:Camarillo 5373:Lancaster 5363:Inglewood 5343:Fullerton 5311:100k−200k 5297:Santa Ana 5287:Riverside 5250:200k–500k 5195:Riverside 5068:Oso Creek 5006:watershed 4894:watershed 4825:watershed 4776:watershed 4352:, p. 103. 4326:OC Weekly 4271:, p. 102. 2793:cite book 2785:909903029 2747:745176510 2332:) (Norco) 2310:Prado Dam 2253:(Anaheim) 2211:(Anaheim) 2175:Metrolink 2011:Crossings 2004:fish farm 1920:Prado Dam 1904:municipal 1836:Prado Dam 1808:Riverside 1804:Santa Ana 1722:Santa Ana 1715:When the 1597:New Spain 1579:explorer 1537:Lupukngna 1517:foothills 1446:saltcedar 1423:wildfires 1349:mule deer 1341:chipmunks 1337:squirrels 1329:black oak 1277:wildfires 1261:scrub oak 1253:chaparral 1249:grassland 1214:amphibian 1202:sea level 1186:chaparral 1178:lodgepole 1144:wind gaps 885:Watershed 859:Santa Ana 795:Prado Dam 787:Riverside 771:Prado Dam 767:Riverside 713:, at the 679:Riverside 675:Santa Ana 643:Lupukngna 624:chaparral 593:Riverside 456:Prado Dam 441:Discharge 123:Santa Ana 115:Riverside 97:Riverside 6306:Westmont 6251:Altadena 6244:over 25k 6167:Bradbury 6061:La Palma 6036:Fillmore 6016:Commerce 6006:Calimesa 5970:Wildomar 5890:Moorpark 5880:Monrovia 5865:Lawndale 5855:La Verne 5810:Cerritos 5775:Adelanto 5749:Whittier 5709:Rosemead 5699:Redlands 5654:Monrovia 5639:Lakewood 5619:La Habra 5609:Highland 5604:Hesperia 5584:Glendora 5569:Eastvale 5504:Beaumont 5474:Alhambra 5467:50k–100k 5443:Torrance 5433:Temecula 5408:Pasadena 5403:Palmdale 5378:Murrieta 5353:Glendale 5338:El Monte 5178:Counties 4332:March 8, 4287:Green OC 3677:32490944 2658:June 13, 2601:June 13, 2512:See also 2398:(Colton) 1645:smallpox 1553:Hutuknga 1549:Totpavit 1545:Pajbenga 1508:Cahuilla 1476:Shoshone 1468:Holocene 1317:junipers 1288:sycamore 1284:live oak 1247:and dry 1118:Elsinore 1106:faulting 1095:ice ages 1068:Ancient 1008:and the 935:ranching 913:and via 785:western 659:Hutuknga 655:Totpavit 651:Pajbenga 89:Counties 64:Location 41:Eastvale 6317:regions 6197:Needles 5991:Artesia 5979:10k–25k 5945:Stanton 5875:Maywood 5785:Barstow 5780:Banning 5768:25k–50k 5759:Yucaipa 5644:Lynwood 5579:Gardena 5559:Cypress 5549:Compton 5489:Arcadia 5448:Ventura 5393:Ontario 5388:Norwalk 5383:Menifee 5318:Burbank 5262:Fontana 5257:Anaheim 5205:Ventura 2390:Amtrak 2097:Former 1880:culvert 1819:Anaheim 1799:drought 1726:Mormons 1664:ranchos 1641:Luiseño 1607:. Fray 1577:Spanish 1571:in 1835 1472:nomadic 1457:History 1273:bobcats 1269:coyotes 1210:reptile 1198:marshes 1150:Ecology 1087:granite 1070:igneous 1052:Geology 1024:of the 843:aquifer 831:Anaheim 719:sources 691:damming 683:Anaheim 667:ranchos 458:, near 119:Anaheim 69:Country 6217:Vernon 6157:Avalon 6091:Malibu 6081:Lomita 6026:Duarte 6021:Cudahy 5996:Blythe 5960:Walnut 5739:Upland 5734:Tustin 5684:Perris 5554:Covina 5544:Colton 5524:Carson 5423:Rialto 5413:Pomona 5398:Orange 5333:Downey 5323:Corona 5282:Oxnard 5267:Irvine 5223:Cities 5190:Orange 3945: 3675: 3458: 3268:. ESRI 2989: 2964: 2783: 2773: 2745: 2735: 2627: 2503: 2394:& 2182:Amtrak 2180:& 2017:source 1986:, and 1872:Orange 1868:Tustin 1823:Orange 1790:levees 1754:citrus 1672:cattle 1653:Mexico 1551:, and 1489:acorns 1434:cattle 1419:bamboo 1388:salmon 1357:alders 1271:, and 1229:desert 1206:mammal 1166:alpine 1159: 1082:strata 996:, the 988:, and 957:, and 851:Orange 697:Course 657:, and 630:. The 620:alpine 508: 460:Corona 454:Below 444: 421:Length 138:Source 107:Cities 101:Orange 6591:water 5895:Norco 5614:Indio 5599:Hemet 5534:Chino 5494:Azusa 5227:towns 5092:Other 4522:Other 4439:(PDF) 4432:(PDF) 3823:(PDF) 3812:(PDF) 3673:S2CID 3633:(PDF) 3613:(PDF) 3412:(PDF) 3405:(PDF) 3037:(PDF) 2648:(PDF) 2591:(PDF) 2446:Arrow 1856:urban 1605:Olive 1575:When 1541:Genga 1313:pines 909:into 647:Genga 345:Mouth 79:State 45:Norco 6315:Area 6241:CDPs 6202:Ojai 5805:Brea 5790:Bell 4473:2009 4447:2009 4412:2009 4375:2009 4334:2019 4303:2009 4241:2009 4211:2009 4181:2009 4139:2009 4093:2009 4059:2009 4034:2009 3943:ISBN 3920:2009 3831:2009 3758:2009 3732:2009 3706:2009 3641:2009 3565:2016 3537:2009 3496:2009 3456:ISBN 3420:2009 3372:2009 3274:2009 3247:2009 3221:2009 3195:2009 3166:2009 3131:2009 3102:2009 3049:2009 2987:ISBN 2962:ISBN 2943:2009 2907:2009 2871:2009 2835:2009 2799:link 2781:OCLC 2771:ISBN 2743:OCLC 2733:ISBN 2696:2009 2660:2016 2625:ISBN 2603:2016 1993:The 1927:the 1906:and 1870:and 1821:and 1806:and 1736:and 1639:and 1631:and 1478:and 1315:and 1286:and 1235:and 1218:fish 1196:and 1180:and 1174:pine 1168:and 1076:and 933:and 877:and 837:for 741:and 689:and 681:and 599:via 591:and 575:The 43:and 5225:and 4544:KML 3665:doi 1182:oak 921:at 873:in 6740:: 4481:^ 4392:. 4342:^ 4323:. 4311:^ 4289:. 4285:. 4261:^ 4227:. 4197:. 4167:. 4125:. 4121:. 4024:. 4013:^ 3996:^ 3981:^ 3957:^ 3911:. 3897:^ 3839:^ 3814:. 3790:^ 3722:. 3685:^ 3671:. 3661:10 3659:. 3597:^ 3554:. 3516:^ 3440:^ 3392:^ 3339:^ 3322:^ 3307:^ 3291:. 3264:. 3139:^ 3110:^ 3093:. 3089:. 3023:^ 3001:^ 2933:, 2929:. 2923:. 2897:, 2893:. 2887:. 2861:, 2857:. 2851:. 2825:, 2821:. 2815:. 2795:}} 2791:{{ 2779:. 2755:^ 2741:. 2717:^ 2686:, 2682:. 2676:. 2650:. 2611:^ 2593:. 2019:. 1982:, 1974:, 1970:, 1966:, 1962:, 1874:. 1834:. 1555:. 1547:, 1543:, 1539:, 1347:, 1343:, 1339:, 1331:, 1327:, 1323:, 1267:, 1224:. 1188:, 1184:, 1176:, 1072:, 1028:. 984:, 953:, 949:, 945:, 941:, 881:. 677:, 653:, 649:, 645:, 558:, 554:, 550:, 534:, 525:, 521:, 364:, 121:, 117:, 113:, 99:, 95:, 5163:e 5156:t 5149:v 4758:e 4751:t 4744:v 4604:e 4597:t 4590:v 4475:. 4449:. 4414:. 4377:. 4336:. 4305:. 4243:. 4213:. 4183:. 4141:. 4095:. 4061:. 4036:. 3975:. 3951:. 3922:. 3833:. 3760:. 3734:. 3708:. 3679:. 3667:: 3643:. 3567:. 3539:. 3498:. 3464:. 3422:. 3374:. 3276:. 3249:. 3223:. 3197:. 3168:. 3133:. 3104:. 2995:. 2970:. 2945:. 2909:. 2873:. 2837:. 2801:) 2787:. 2749:. 2698:. 2662:. 2633:. 2605:. 2468:( 2432:/ 2428:( 2413:/ 2409:( 2356:( 2328:( 2306:) 2302:( 2243:( 2225:( 2167:( 2146:( 2131:( 2105:) 2066:( 1120:– 529:/

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.

Index