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Snake River Plain (ecoregion)

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reservoirs, and diversions supply water to the region's pastureland, cropland, and residential, commercial, and industrial developments. Small grains, alfalfa, sugar beets, potatoes, and beans are grown. Livestock and dairy farms occur; dairying is more common than in the Treasure Valley. Dams, irrigation diversions, pollution, and channel alteration have affected water quality, and over-watering from sprinkler-irrigated portions of the Eastern Snake River Basalt Plains has raised
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distinct from the irrigated agriculture of the valley. However, scattered areas near rivers with enough water to leach salts from the soil support alfalfa or sugar beet farming. Natural vegetation is dominated by Wyoming big sagebrush and associated grasses, such as bluebunch wheatgrass, Sandberg bluegrass, Thurber needlegrass, and Indian ricegrass. Today, cheatgrass and crested wheatgrass are also common. Salt tolerant shrubs, including
1128: 1068: 908:. Elevation varies from 2,500 to 4,300 feet (762 to 1,311 m), with some buttes up to 5,000 feet (1,524 m). It is mostly rangeland and is sparsely populated, unlike regions to the west and east. It is flanked by foothills to the north and south and by the Magic and Treasure Valleys to the east and west. Today, it supports cheatgrass, 892:. The region is cool enough to have some regeneration capacity and still contains native plants, unlike the Mountain Home Uplands to the west. By far the largest of the Snake River Plain subregions, it covers 6,426 square miles (16,643 km) in southern Idaho, including part of the Craters of the Moon National Monument and Idaho National Engineering Laboratory. 916:. Stock carrying capacity is low. Native grasses are much rarer and vegetative regeneration capacity is more limited than in the cooler Eastern Snake River Basalt Plains, which has more available moisture. The second largest of the Snake River Plain subregions, it covers 2,945 square miles (7,628 km) in southern Idaho, along the 888:
with the cropland of other subregions in the Snake River Plain. Potential natural vegetation is mostly sagebrush and bunchgrass, with basin and Wyoming big sagebrush, Thurber needlegrass, Indian ricegrass, bitterbrush, bluegrass, and cheatgrass. Saline areas feature fourwing saltbush, shadscale, and
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that "magically" transformed the region in the early 1900s, is an agricultural valley underlain by alluvium, loess, and basalt flows. Elevation varies from 3,200 to 4,500 feet (975 to 1,372 m). The aridic soils require irrigation to grow commercial crops. Many canals,
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is a large irregular plain at an elevation of 3,700 to 6,400 feet (1,128 to 1,951 m), with shallow, stony soils that are unsuitable for cultivation. Only small areas have soils deep enough to be farmed under sprinkler irrigation. Rangeland is widespread and contrasts
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lacustrine deposits. Perennial streams are rare. At an elevation of 2,100 to 2,600 feet (671 to 1,189 m), the terrain is higher and more rugged than the neighboring Treasure Valley. The region is valuable as rangeland and wildlife habitat, and land use is generally
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processing. Extensive surface-irrigated small grain, sugar beet, potato, and alfalfa farming occurs. The frost-free season is shorter and crops are less varied than in agricultural areas downstream. Potential natural vegetation is sagebrush steppe, with saltbush-greasewood communities in the
949:. Natural vegetation is mostly sagebrush and bunchgrass, but low terraces have salt tolerant plants. Wyoming and basin big sagebrush, alkali sagebrush, bluebunch wheatgrass, Thurber needlegrass, squirreltail, bluegrass, needle-and-thread, Indian ricegrass, and fourwing saltbush are present. 776:
is characterized by nearly level river terraces, floodplains, and lake plains containing many canals and rivers. Elevation varies from 4,400 to 5,000 feet (1,341 to 1,524 m). The region is primarily used for irrigated cropland, pastureland, suburban and urban
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in wetter areas. Land use is primarily livestock grazing and is distinct from the irrigated agriculture of the Treasure Valley. Wildfire frequency is high. The region covers 1,559 square miles (4,038 km) in two separate areas of Idaho, one northeast of
1735: 1374: 740:. Loess is far more extensive than in the Upper Snake River Plain subregion. Sprinkler-irrigated land supports potatoes, alfalfa, and pasture; however, surface irrigation is far less common than in the Upper Snake River Plain. 1750: 1929: 704:, bluegrass, basin big sagebrush, and mountain sagebrush. Lava plains support alkali sagebrush, bluegrass, squirreltail, and Idaho fescue. The region covers 530 square miles (1,373 km) in Idaho along the 1805: 1882: 1970: 1629: 1354: 1825: 1359: 1866: 1537: 1369: 990:, occur on alkaline outcrops. The region covers 1,598 square miles (4,139 km) in western Idaho and 489 square miles (1,267 km) in eastern Oregon, on both sides of the Treasure Valley. 1785: 1745: 1649: 1634: 1481: 1960: 1730: 1725: 1624: 842:
to the north. At an elevation of 2,900 to 6,500 feet (884 to 1,981 m), it is higher and more rugged than neighboring regions in the Snake River Plain. Shallow,
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rising from irregular plains, at an elevation of 3,800 to 5,500 feet (1,158 to 1,676 m). Exposed basalt or very shallow loessial soils over
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plains, and, on the periphery, alluvial fans. Elevation varies from 4,700 to 5,100 feet (1,443 to 1,554 m). It is flanked by the semi-arid
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and incised rivers. Elevation varies from 2,000 to 2,800 feet (640 to 853 m). The valley is underlain by
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is greater than in the rangeland-dominated regions to the east and west. The region covers 1,700 square miles (4,403 km) in the
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occur. The region covers 1,302 square miles (3,372 km) in Idaho and 499 square miles (1,292 km) in Oregon, where the
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before the valley was converted to agriculture. Canals and diversions in this portion of the Snake River Plain supply water to
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developments, and industrial areas, and aquatic resources have been degraded by irrigation diversions, channelization, dams,
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is low. The region covers 1,122 square miles (2,906 km) in Idaho in pockets of the eastern Snake River Plain, including
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soils are common, supporting sagebrush steppe communities of bluebunch wheatgrass, bluegrass, Idaho fescue, big sagebrush,
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has been significantly affected by channel alteration, dams, irrigation diversions, irrigation return flow, and
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consists of foothills, alluvial fans, hills, and valleys that separate the Snake River Plain from the
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associations also occur. Streams generally have lower gradients, are warmer, and have finer grained
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grows small grains. Potential natural vegetation is sagebrush steppe, with mountain big sagebrush,
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southwest. Big sagebrush, bluebunch wheatgrass, bluegrass, cheatgrass, rabbitbrush, squirreltail,
1939: 1599: 1339: 1775: 917: 462: 811: 490: 217: 1293: 2018: 1644: 1390: 1229: 913: 868: 733: 498: 430: 344: 806:. The region covers 1,463 square miles (3,789 km) in eastern Idaho, mostly along the 47: 8: 1029: 803: 753: 494: 381: 310: 63: 19:
This article is about the ecoregion designated by the EPA. For the geologic feature, see
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consists of arid, shrub- and grass-covered plains with hills and basalt-capped
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are present. Riparian areas feature sedges, perennial grasses, willows, and
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are common and are colder than the soils of the lower Treasure Valley. Wet
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contains rolling foothills, hills, benches, alluvial fans, and scattered
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and is used for small grain and alfalfa farming, pasture, range, and
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across Idaho, stretching roughly 400 miles (640 km) from the
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rivers converge into the Snake. It includes lowland areas from
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6 Southern and Central California Chaparral and Oak Woodlands
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The Snake River Plain ecoregion has been subdivided into ten
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availability is extremely limited, and the region is either
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is a cold, wet valley containing nearly level to rolling
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barrier, and different species occur above and below it.
960: 1736:56 Southern Michigan/Northern Indiana Drift Plains 1192: 676:occur and are local and seasonal problems. Frigid 485:is greater, temperatures are warmer, and the mean 1137:McGrath, CL; Woods, AJ; Omernik, JM; et al. 1077:Thorson, TD; Bryce, SA; Lammers, DA; et al. 321:assemblages in the region are typically a mix of 2000: 1605:29 Central Oklahoma/Texas Plains (Cross Timbers) 1375:120 Coastal Western Hemlock-Sitka Spruce Forests 973:that are characteristically underlain by sandy, 767: 1136: 1076: 385:Level IV ecoregions in the Snake River Plain. ( 1032:maintains an alternate classification system: 895: 1988:United States Environmental Protection Agency 1309: 1283:United States Environmental Protection Agency 1178: 1041:List of ecoregions in the United States (WWF) 1012:List of ecoregions in the United States (EPA) 752:occur in the poorly drained, relatively cold 184:United States Environmental Protection Agency 728:, alluvial fans, low terraces, bottomlands, 722:Dissected Plateaus and Teton Basin ecoregion 343:are also present. The region has many large 1751:60 Northern Appalachian Plateau and Uplands 885:Eastern Snake River Basalt Plains ecoregion 829: 16:Ecoregion in the northwestern United States 1930:104 Interior Forested Lowlands and Uplands 1831:83 Eastern Great Lakes and Hudson Lowlands 1316: 1302: 1185: 1171: 1122: 1062: 1060: 1058: 1007:List of ecoregions in North America (CEC) 936:, named for the irrigation canals of the 1120: 1118: 1116: 1114: 1112: 1110: 1108: 1106: 1104: 1102: 1001:Commission for Environmental Cooperation 716:Dissected Plateaus and Teton Basin (12d) 672:on the prairie. Resultant wet soils and 393: 380: 1401:9 Eastern Cascades Slopes and Foothills 1235:9 Eastern Cascades Slopes and Foothills 879:Eastern Snake River Basalt Plains (12g) 239:bordering the Snake River are used for 2001: 1055: 999:Ecoregions defined by the EPA and the 636: 469:, sugar beets, alfalfa, potatoes, and 376: 1721:53 Southeastern Wisconsin Till Plains 1297: 1166: 1099: 967:Unwooded Alkaline Foothills ecoregion 927: 627:Craters of the Moon National Monument 568: 1806:72 Interior River Valleys and Hills 347:along the Snake River that support 13: 1816:74 Mississippi Valley Loess Plains 732:, and nearly flat, poorly drained 563:Deer Flat National Wildlife Refuge 14: 2030: 1971:112 Bristol Bay-Nushagak Lowlands 1883:76 Southern Florida Coastal Plain 1711:51 North Central Hardwood Forests 961:Unwooded Alkaline Foothills (12j) 774:Upper Snake River Plain ecoregion 661:of the Snake River Plain and the 1836:84 Atlantic Coastal Pine Barrens 1761:63 Middle Atlantic Coastal Plain 1630:42 Northwestern Glaciated Plains 1355:111 Ahklun and Kilbuck Mountains 1131: This article incorporates 1126: 1071: This article incorporates 1066: 477:is greater than in neighboring, 437:, and they originally supported 46: 34: 2009:Ecoregions of the United States 1569:23 Arizona/New Mexico Mountains 1492:8 Southern California Mountains 1384:Northwestern Forested Mountains 1326:Ecoregions in the United States 1223:Northwestern Forested Mountains 1148:United States Geological Survey 1088:United States Geological Survey 902:Mountain Home Uplands ecoregion 762:Caribou-Targhee National Forest 410:rolling valley containing many 1852:49 Northern Minnesota Wetlands 1826:82 Laurentian Plains and Hills 1426:19 Wasatch and Uinta Mountains 1360:113 Alaska Peninsula Mountains 945:levels and created artificial 867:drainage and one northeast of 820:Camas National Wildlife Refuge 760:. It includes portions of the 1: 1867:62 North Central Appalachians 1857:50 Northern Lakes and Forests 1811:73 Mississippi Alluvial Plain 1620:34 Western Gulf Coastal Plain 1538:22 Arizona/New Mexico Plateau 1370:119 Pacific Coastal Mountains 1048: 768:Upper Snake River Plain (12e) 609:, including basin sagebrush, 601:or sparsely covered by hardy 97:Northern Basin and Range (80) 1961:109 Subarctic Coastal Plains 1892:Southern Semi-Arid Highlands 1796:70 Western Allegheny Plateau 1786:68 Southwestern Appalachians 1746:59 Northeastern Coastal Zone 1731:55 Eastern Corn Belt Plains 1681:33 East Central Texas Plains 1650:46 Northern Glaciated Plains 1635:43 Northwestern Great Plains 1022:List of ecoregions in Oregon 836:Semiarid Foothills ecoregion 824:Fort Hall Indian Reservation 7: 1726:54 Central Corn Belt Plains 1676:32 Texas Blackland Prairies 1655:47 Western Corn Belt Plains 1625:40 Central Irregular Plains 1548:80 Northern Basin and Range 1487:7 Central California Valley 1271:80 Northern Basin and Range 1017:List of ecoregions in Idaho 993: 920:corridor between Boise and 896:Mountain Home Uplands (12h) 617:, Thurber needlegrass, and 176:Snake River Plain ecoregion 29:Snake River Plain ecoregion 10: 2035: 1590:26 Southwestern Tablelands 1553:81 Sonoran Basin and Range 1518:13 Central Basin and Range 18: 1984: 1953: 1907: 1891: 1875: 1862:58 Northeastern Highlands 1844: 1821:75 Southern Coastal Plain 1741:57 Huron/Erie Lake Plains 1668: 1577: 1561: 1523:14 Mojave Basin and Range 1500: 1474: 1383: 1332: 1279: 1253: 1222: 1201: 840:Idaho Batholith ecoregion 631:Idaho National Laboratory 400:Treasure Valley ecoregion 135: 118: 110: 105: 74: 62: 57: 45: 33: 28: 1935:106 Interior Bottomlands 1915:101 Arctic Coastal Plain 1669:Eastern Temperate Forest 1615:31 Southern Texas Plains 1475:Mediterranean California 1333:Marine West Coast Forest 1202:Marine West Coast Forest 1036:List of ecoregions (WWF) 957:area of southern Idaho. 830:Semiarid Foothills (12f) 798:, Indian ricegrass, and 615:bottlebrush squirreltail 1791:69 Central Appalachians 1686:35 South Central Plains 1595:27 Central Great Plains 1028:The conservation group 643:Camas Prairie ecoregion 481:-dominated ecoregions. 313:than do streams in the 1899:79 Madrean Archipelago 1771:65 Southeastern Plains 1640:44 Nebraska Sand Hills 1585:25 Western High Plains 1501:North American Deserts 1466:118 Wrangell Mountains 1451:105 Interior Highlands 1254:North American Deserts 1133:public domain material 1073:public domain material 934:Magic Valley ecoregion 463:agricultural pollution 435:aridic moisture regime 390: 373:, as described below. 271:are grown. Elsewhere, 251:depth are sufficient, 52:Snake River Plain (12) 1945:108 Ogilvie Mountains 1691:36 Ouachita Mountains 1660:48 Lake Agassiz Plain 1543:24 Chihuahuan Deserts 982:, fourwing saltbush, 575:Lava Fields ecoregion 511:Thurber's needlegrass 491:Wyoming big sagebrush 394:Treasure Valley (12a) 384: 2014:Ecoregions of Oregon 1976:114 Aleutian Islands 1966:110 Seward Peninsula 1920:102 Arctic Foothills 1876:Tropical Wet Forests 1766:64 Northern Piedmont 1533:20 Colorado Plateaus 1513:12 Snake River Plain 1446:78 Klamath Mountains 1266:12 Snake River Plain 1245:78 Klamath Mountains 1195:Ecoregions in Oregon 1080:Ecoregions of Oregon 914:antelope bitterbrush 724:is characterized by 593:are characteristic. 499:bluebunch wheatgrass 317:ecoregions. Natural 87:Idaho Batholith (16) 1801:71 Interior Plateau 1781:67 Ridge and Valley 1756:61 Erie Drift Plain 1701:38 Boston Mountains 1508:10 Columbia Plateau 1436:41 Canadian Rockies 1431:21 Southern Rockies 1411:15 Northern Rockies 1350:3 Willamette Valley 1261:10 Columbia Plateau 1214:3 Willamette Valley 1140:Ecoregions of Idaho 1030:World Wildlife Fund 637:Camas Prairie (12c) 495:basin big sagebrush 377:Level IV ecoregions 371:Level IV ecoregions 286:are found locally. 220:. Characterized by 180:Level III ecoregion 153: /  92:Middle Rockies (17) 82:Blue Mountains (11) 1986:as defined by the 1706:39 Ozark Highlands 1696:37 Arkansas Valley 1610:30 Edwards Plateau 1461:117 Copper Plateau 1416:16 Idaho Batholith 1281:as defined by the 951:Population density 928:Magic Valley (12i) 910:crested wheatgrass 875:and nearby hills. 852:medusahead wildrye 818:. It includes the 783:nonpoint pollution 746:threetip sagebrush 742:Non-irrigated land 726:dissected plateaus 611:mountain sagebrush 529:, greasewood, and 475:Population density 391: 289:Potential natural 182:designated by the 1996: 1995: 1716:52 Driftless Area 1562:Temperate Sierras 1441:77 North Cascades 1421:17 Middle Rockies 1406:11 Blue Mountains 1291: 1290: 1240:11 Blue Mountains 800:fourwing saltbush 796:needle-and-thread 629:and parts of the 623:carrying capacity 569:Lava Fields (12b) 561:and contains the 198:. It follows the 172: 171: 21:Snake River Plain 2026: 1925:103 Brooks Range 1845:Northern Forests 1528:18 Wyoming Basin 1456:116 Alaska Range 1318: 1311: 1304: 1295: 1294: 1187: 1180: 1173: 1164: 1163: 1157: 1151: 1145: 1130: 1129: 1124: 1097: 1091: 1085: 1070: 1069: 1064: 984:inland saltgrass 980:black greasewood 873:Bennett Mountain 822:and most of the 779:sewage treatment 710:wildlife habitat 619:Indian ricegrass 465:. Crops include 433:. Soils have an 295:sagebrush steppe 284:dairy operations 168: 167: 165: 164: 163: 158: 154: 151: 150: 149: 146: 50: 38: 26: 25: 2034: 2033: 2029: 2028: 2027: 2025: 2024: 2023: 1999: 1998: 1997: 1992: 1980: 1949: 1940:107 Yukon Flats 1903: 1887: 1871: 1840: 1664: 1573: 1557: 1496: 1470: 1396:5 Sierra Nevada 1379: 1345:2 Puget Lowland 1328: 1322: 1292: 1287: 1275: 1249: 1218: 1197: 1191: 1161: 1160: 1143: 1127: 1125: 1100: 1083: 1067: 1065: 1056: 1051: 996: 963: 930: 898: 881: 832: 787:food processing 770: 758:Teton Mountains 718: 663:Idaho Batholith 639: 571: 404:Treasure Valley 402:(named for the 396: 379: 280:Cattle feedlots 278:is widespread. 161: 159: 155: 152: 147: 144: 142: 140: 139: 131: 101: 53: 41: 40:The Snake River 24: 17: 12: 11: 5: 2032: 2022: 2021: 2016: 2011: 1994: 1993: 1985: 1982: 1981: 1979: 1978: 1973: 1968: 1963: 1957: 1955: 1951: 1950: 1948: 1947: 1942: 1937: 1932: 1927: 1922: 1917: 1911: 1909: 1905: 1904: 1902: 1901: 1895: 1893: 1889: 1888: 1886: 1885: 1879: 1877: 1873: 1872: 1870: 1869: 1864: 1859: 1854: 1848: 1846: 1842: 1841: 1839: 1838: 1833: 1828: 1823: 1818: 1813: 1808: 1803: 1798: 1793: 1788: 1783: 1778: 1773: 1768: 1763: 1758: 1753: 1748: 1743: 1738: 1733: 1728: 1723: 1718: 1713: 1708: 1703: 1698: 1693: 1688: 1683: 1678: 1672: 1670: 1666: 1665: 1663: 1662: 1657: 1652: 1647: 1642: 1637: 1632: 1627: 1622: 1617: 1612: 1607: 1602: 1600:28 Flint Hills 1597: 1592: 1587: 1581: 1579: 1575: 1574: 1572: 1571: 1565: 1563: 1559: 1558: 1556: 1555: 1550: 1545: 1540: 1535: 1530: 1525: 1520: 1515: 1510: 1504: 1502: 1498: 1497: 1495: 1494: 1489: 1484: 1478: 1476: 1472: 1471: 1469: 1468: 1463: 1458: 1453: 1448: 1443: 1438: 1433: 1428: 1423: 1418: 1413: 1408: 1403: 1398: 1393: 1387: 1385: 1381: 1380: 1378: 1377: 1372: 1367: 1365:115 Cook Inlet 1362: 1357: 1352: 1347: 1342: 1336: 1334: 1330: 1329: 1321: 1320: 1313: 1306: 1298: 1289: 1288: 1280: 1277: 1276: 1274: 1273: 1268: 1263: 1257: 1255: 1251: 1250: 1248: 1247: 1242: 1237: 1232: 1226: 1224: 1220: 1219: 1217: 1216: 1211: 1205: 1203: 1199: 1198: 1190: 1189: 1182: 1175: 1167: 1159: 1158: 1098: 1053: 1052: 1050: 1047: 1046: 1045: 1044: 1043: 1038: 1026: 1025: 1024: 1019: 1014: 1009: 995: 992: 962: 959: 929: 926: 897: 894: 880: 877: 831: 828: 812:American Falls 810:corridor from 769: 766: 730:outwash plains 717: 714: 694:meadow grasses 638: 635: 570: 567: 483:Crop diversity 455:municipalities 395: 392: 378: 375: 360:Shoshone Falls 232:. Many of the 208:Eastern Oregon 170: 169: 157:43.0°N 114.0°W 137: 133: 132: 130: 129: 126: 122: 120: 116: 115: 112: 108: 107: 103: 102: 100: 99: 94: 89: 84: 78: 76: 72: 71: 66: 60: 59: 55: 54: 51: 43: 42: 39: 31: 30: 15: 9: 6: 4: 3: 2: 2031: 2020: 2017: 2015: 2012: 2010: 2007: 2006: 2004: 1991: 1989: 1983: 1977: 1974: 1972: 1969: 1967: 1964: 1962: 1959: 1958: 1956: 1952: 1946: 1943: 1941: 1938: 1936: 1933: 1931: 1928: 1926: 1923: 1921: 1918: 1916: 1913: 1912: 1910: 1906: 1900: 1897: 1896: 1894: 1890: 1884: 1881: 1880: 1878: 1874: 1868: 1865: 1863: 1860: 1858: 1855: 1853: 1850: 1849: 1847: 1843: 1837: 1834: 1832: 1829: 1827: 1824: 1822: 1819: 1817: 1814: 1812: 1809: 1807: 1804: 1802: 1799: 1797: 1794: 1792: 1789: 1787: 1784: 1782: 1779: 1777: 1776:66 Blue Ridge 1774: 1772: 1769: 1767: 1764: 1762: 1759: 1757: 1754: 1752: 1749: 1747: 1744: 1742: 1739: 1737: 1734: 1732: 1729: 1727: 1724: 1722: 1719: 1717: 1714: 1712: 1709: 1707: 1704: 1702: 1699: 1697: 1694: 1692: 1689: 1687: 1684: 1682: 1679: 1677: 1674: 1673: 1671: 1667: 1661: 1658: 1656: 1653: 1651: 1648: 1646: 1643: 1641: 1638: 1636: 1633: 1631: 1628: 1626: 1623: 1621: 1618: 1616: 1613: 1611: 1608: 1606: 1603: 1601: 1598: 1596: 1593: 1591: 1588: 1586: 1583: 1582: 1580: 1576: 1570: 1567: 1566: 1564: 1560: 1554: 1551: 1549: 1546: 1544: 1541: 1539: 1536: 1534: 1531: 1529: 1526: 1524: 1521: 1519: 1516: 1514: 1511: 1509: 1506: 1505: 1503: 1499: 1493: 1490: 1488: 1485: 1483: 1480: 1479: 1477: 1473: 1467: 1464: 1462: 1459: 1457: 1454: 1452: 1449: 1447: 1444: 1442: 1439: 1437: 1434: 1432: 1429: 1427: 1424: 1422: 1419: 1417: 1414: 1412: 1409: 1407: 1404: 1402: 1399: 1397: 1394: 1392: 1389: 1388: 1386: 1382: 1376: 1373: 1371: 1368: 1366: 1363: 1361: 1358: 1356: 1353: 1351: 1348: 1346: 1343: 1341: 1340:1 Coast Range 1338: 1337: 1335: 1331: 1327: 1319: 1314: 1312: 1307: 1305: 1300: 1299: 1296: 1286: 1284: 1278: 1272: 1269: 1267: 1264: 1262: 1259: 1258: 1256: 1252: 1246: 1243: 1241: 1238: 1236: 1233: 1231: 1228: 1227: 1225: 1221: 1215: 1212: 1210: 1209:1 Coast Range 1207: 1206: 1204: 1200: 1196: 1188: 1183: 1181: 1176: 1174: 1169: 1168: 1165: 1155: 1149: 1142: 1141: 1134: 1123: 1121: 1119: 1117: 1115: 1113: 1111: 1109: 1107: 1105: 1103: 1095: 1089: 1082: 1081: 1074: 1063: 1061: 1059: 1054: 1042: 1039: 1037: 1034: 1033: 1031: 1027: 1023: 1020: 1018: 1015: 1013: 1010: 1008: 1005: 1004: 1002: 998: 997: 991: 989: 986:, shadscale, 985: 981: 976: 972: 968: 958: 956: 952: 948: 944: 939: 935: 925: 923: 919: 915: 911: 907: 903: 893: 891: 886: 876: 874: 870: 869:Mountain Home 866: 862: 857: 853: 849: 845: 841: 837: 827: 825: 821: 817: 813: 809: 805: 801: 797: 792: 788: 784: 780: 775: 765: 763: 759: 755: 751: 747: 743: 739: 735: 731: 727: 723: 713: 711: 707: 703: 699: 695: 691: 687: 683: 679: 675: 671: 668: 665:, which trap 664: 660: 656: 652: 648: 644: 634: 632: 628: 624: 620: 616: 612: 608: 604: 600: 596: 595:Surface water 592: 588: 587:spatter cones 584: 580: 576: 566: 564: 560: 556: 552: 548: 544: 540: 536: 532: 528: 524: 520: 516: 512: 508: 507:basin wildrye 504: 500: 496: 492: 488: 484: 480: 476: 472: 468: 464: 460: 459:water quality 456: 452: 448: 444: 440: 436: 432: 429: 425: 421: 417: 413: 409: 405: 401: 388: 383: 374: 372: 367: 365: 364:zoogeographic 361: 357: 354: 350: 346: 342: 338: 335: 331: 327: 324: 320: 316: 312: 308: 304: 300: 297:, but barren 296: 292: 287: 285: 281: 277: 274: 270: 266: 262: 258: 254: 250: 246: 242: 238: 235: 231: 227: 223: 219: 216: 213: 209: 205: 201: 197: 193: 189: 186:(EPA) in the 185: 181: 177: 166: 138: 134: 127: 124: 123: 121: 117: 114:United States 113: 109: 104: 98: 95: 93: 90: 88: 85: 83: 80: 79: 77: 73: 70: 67: 65: 61: 56: 49: 44: 37: 32: 27: 22: 1578:Great Plains 1512: 1265: 1154:Reverse side 1139: 1094:Reverse side 1079: 966: 964: 938:Magic Valley 933: 931: 901: 899: 884: 882: 871:, including 865:Weiser River 835: 833: 773: 771: 738:wind erosion 721: 719: 702:Idaho fescue 642: 640: 621:. Livestock 583:cinder cones 574: 572: 428:alluvial fan 399: 397: 368: 334:stenothermal 288: 215:intermontane 175: 173: 162:43.0; -114.0 2019:Lava fields 1645:45 Piedmont 943:groundwater 848:bitterbrush 816:St. Anthony 754:Teton Basin 750:Wet meadows 706:Camas River 682:bottomlands 651:bottomlands 515:rabbitbrush 453:as well as 447:pastureland 408:unglaciated 362:is a major 332:, but some 323:mesothermal 299:lava fields 253:sugar beets 241:agriculture 200:Snake River 188:U.S. states 160: / 136:Coordinates 2003:Categories 1391:4 Cascades 1324:Level III 1230:4 Cascades 1193:Level III 1049:References 955:Twin Falls 890:winter fat 808:interstate 804:cottonwood 519:cheatgrass 457:. Surface 424:lacustrine 418:alluvium, 416:Quaternary 311:substrates 307:greasewood 293:is mostly 291:vegetation 269:vegetables 247:water and 245:irrigation 230:ecoregions 206:border to 791:phosphate 678:mollisols 659:foothills 591:volcanics 577:contains 531:saltgrass 527:shadscale 503:bluegrass 479:rangeland 443:grassland 439:sagebrush 351:fish and 337:salmonids 273:livestock 106:Geography 994:See also 988:seepweed 975:alkaline 971:badlands 947:wetlands 684:support 674:flooding 667:mountain 647:terraces 451:cropland 431:deposits 406:) is an 387:Full map 341:sculpins 303:saltbush 263:, small 257:potatoes 243:. Where 234:alluvial 224:and low 148:114°00′W 69:Nearctic 922:Gooding 863:in the 856:clovers 698:willows 607:grasses 581:flows, 547:Malheur 535:Payette 525:areas, 356:species 353:mollusc 349:endemic 345:springs 330:suckers 326:minnows 315:montane 276:grazing 261:alfalfa 237:valleys 210:in the 204:Wyoming 145:43°00′N 111:Country 75:Borders 58:Ecology 1954:Tundra 906:buttes 861:Weiser 844:clayey 789:, and 734:basins 696:, and 690:sedges 686:rushes 670:runoff 655:basalt 603:shrubs 599:barren 585:, and 579:basalt 551:Owyhee 543:Weiser 523:saline 517:, and 471:onions 426:, and 412:canals 267:, and 265:grains 222:plains 196:Oregon 128:Oregon 119:States 1908:Taiga 1144:(PDF) 1135:from 1084:(PDF) 1075:from 555:Boise 539:Boise 521:. In 487:frost 467:wheat 420:loess 226:hills 212:xeric 192:Idaho 178:is a 125:Idaho 64:Realm 965:The 932:The 918:I-84 900:The 883:The 834:The 772:The 720:The 641:The 605:and 573:The 559:Vale 549:and 449:and 398:The 339:and 328:and 319:fish 301:and 282:and 249:soil 218:west 194:and 174:The 814:to 557:to 190:of 2005:: 1156:). 1146:. 1101:^ 1096:). 1086:. 1057:^ 1003:: 924:. 850:, 826:. 785:, 781:, 764:. 712:. 692:, 688:, 653:, 649:, 633:. 565:. 545:, 541:, 537:, 513:, 509:, 505:, 501:, 497:, 493:, 473:. 422:, 389:). 358:. 259:, 255:, 1317:e 1310:t 1303:v 1186:e 1179:t 1172:v 1150:. 1090:. 441:- 305:- 23:.

Index

Snake River Plain


Realm
Nearctic
Blue Mountains (11)
Idaho Batholith (16)
Middle Rockies (17)
Northern Basin and Range (80)
43°00′N 114°00′W / 43.0°N 114.0°W / 43.0; -114.0
Level III ecoregion
United States Environmental Protection Agency
U.S. states
Idaho
Oregon
Snake River
Wyoming
Eastern Oregon
xeric
intermontane
west
plains
hills
ecoregions
alluvial
valleys
agriculture
irrigation
soil
sugar beets

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