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is the perimeter of the cross sectional area that is "wet". The length of line of the intersection of channel wetted surface with a cross sectional plane normal to the flow direction. The term wetted perimeter is common in
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159:. In a practical experiment, one is able to measure the wetted perimeter with a tape measure weighted down to the river bed to get a more accurate
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151:, the wetted perimeter is defined as the surface of the channel bottom and sides in direct contact with the aqueous body.
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When a channel is much wider than it is deep, the wetted perimeter approximates the channel width.
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losses typically increase with an increasing wetted perimeter, resulting in a decrease in
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Cross sectional area of a trapezoidal open channel, red highlights wetted perimeter
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Change of wetted perimeter (blue) of trapezoidal canal as a function of angle
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is the length of each surface in contact with the aqueous body.
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72:. Engineers commonly cite the cross sectional area of a river.
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The wetted perimeter can be defined mathematically as
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126:
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16:Perimeter of a cross sectional area that is wet
212:Fluvial forms and processes: a new perspective
127:{\displaystyle P=\sum _{i=0}^{\infty }{l_{i}}}
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64:applications; it is associated with the
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18:
853:International scale of river difficulty
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1505:This engineering-related article is a
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13:
107:
14:
1669:
1550:
1497:
1010:Flooded grasslands and savannas
1:
191:
1566:. You can help Knowledge by
1509:. You can help Knowledge by
1176:Universal Soil Loss Equation
1126:Hydrological transport model
1020:Storm Water Management Model
176:Hydrological transport model
7:
214:(2nd ed.). Routledge.
169:
10:
1674:
1545:
1492:
680:Antecedent drainage stream
1618:Environmental engineering
1444:
1416:River valley civilization
1378:
1317:
1299:Riparian-zone restoration
1199:
1061:
1033:
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906:
838:
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50:environmental engineering
1479:Countries without rivers
1454:Rivers by discharge rate
1166:Runoff model (reservoir)
1131:Infiltration (hydrology)
210:Knighton, David (1998).
1151:River Continuum Concept
916:Agricultural wastewater
1474:River name etymologies
1401:Hydraulic civilization
1259:Floodplain restoration
1035:Point source pollution
810:Sedimentary structures
128:
111:
36:
24:
1638:Hydraulic engineering
1623:Environmental science
1086:Discharge (hydrology)
1048:Industrial wastewater
529:Sedimentary processes
129:
91:
30:
22:
1191:Volumetric flow rate
775:Riffle-pool sequence
82:
1658:Geomorphology stubs
1365:Whitewater kayaking
1360:Whitewater canoeing
1161:Runoff curve number
1005:Flood pulse concept
1391:Aquatic toxicology
1304:Stream restoration
1269:Infiltration basin
1121:Hydrological model
637:Sediment transport
460:Estavelle/Inversac
338:Subterranean river
124:
66:hydraulic diameter
37:
25:
1653:Engineering stubs
1575:
1574:
1518:
1517:
1487:
1486:
1464:Whitewater rivers
1370:Whitewater slalom
1201:River engineering
1101:Groundwater model
1062:River measurement
990:Flood forecasting
805:Sedimentary basin
662:Fluvial landforms
567:Bed material load
343:River bifurcation
149:open channel flow
46:civil engineering
1665:
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1547:
1539:
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1525:
1501:
1494:
1449:Rivers by length
1284:River morphology
1186:Wetted perimeter
1091:Drainage density
602:Headward erosion
431:Perennial stream
303:Blackwater river
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186:Hydraulic radius
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70:hydraulic radius
41:wetted perimeter
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1459:Drainage basins
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1289:Retention basin
1249:Erosion control
1244:Detention basin
1195:
1111:Hjulström curve
1063:
1057:
1029:
973:Non-water flood
930:
902:
848:Helicoidal flow
834:
735:Fluvial terrace
730:Floating island
656:
531:
523:
514:Rhythmic spring
448:
440:
421:Stream gradient
362:
348:River ecosystem
313:Channel pattern
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181:Manning formula
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1628:Fluid dynamics
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1350:Stone skipping
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1234:Drop structure
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1214:Balancing lake
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1141:Playfair's law
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1123:
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1103:
1098:
1096:Exner equation
1093:
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1083:
1081:Bradshaw model
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1002:
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982:
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968:Urban flooding
960:
955:
953:Crevasse splay
950:
948:100-year flood
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908:Surface runoff
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888:Stream capture
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800:Rock-cut basin
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642:Suspended load
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632:Secondary flow
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624:
622:Retrogradation
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587:Dissolved load
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519:Spring horizon
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504:Mineral spring
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485:list in the US
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411:Stream channel
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333:Drainage basin
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293:Alluvial river
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221:978-0340663134
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1633:Geomorphology
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1431:Surface water
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1426:Sacred waters
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1411:Riparian zone
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1396:Body of water
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1345:Riverboarding
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1340:River surfing
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1064:and modelling
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1038:
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1025:Return period
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1021:
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1016:
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1001:
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991:
988:
986:
985:Flood control
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981:
980:Flood barrier
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612:Palaeochannel
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572:Granular flow
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318:Channel types
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298:Braided river
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62:heat transfer
59:
58:geomorphology
55:
51:
47:
42:
34:
29:
21:
1568:expanding it
1557:
1511:expanding it
1504:
1489:
1469:Flash floods
1421:River cruise
1318:River sports
1185:
1171:Stream gauge
1156:Rouse number
1146:Relief ratio
995:Flood-meadow
926:Urban runoff
840:Fluvial flow
825:River valley
795:River island
760:Meander scar
675:Alluvial fan
617:Progradation
492:Karst spring
436:Winterbourne
391:Chalk stream
353:River source
328:Distributary
211:
165:
146:
138:
136:
74:
40:
38:
32:
1330:Fly fishing
1254:Fish ladder
1239:Daylighting
958:Flash flood
921:First flush
868:Plunge pool
592:Downcutting
577:Debris flow
552:Aggradation
426:Stream pool
161:measurement
1607:Categories
1436:Wild river
1116:Hydrograph
1106:Hack's law
1071:Baer's law
1015:Inundation
1000:Floodplain
940:stormwater
898:Whitewater
770:Oxbow lake
607:Knickpoint
582:Deposition
475:Hot spring
416:Streamflow
406:Stream bed
323:Confluence
192:References
1643:Hydrology
1406:Limnology
1355:Triathlon
1325:Canyoning
1294:Revetment
1224:Check dam
1136:Main stem
893:Waterfall
780:Point bar
765:Mouth bar
705:Billabong
652:Water gap
647:Wash load
627:Saltation
547:Anabranch
470:Holy well
358:Tributary
108:∞
93:∑
54:hydrology
1209:Aqueduct
1076:Baseflow
1043:Effluent
720:Cut bank
685:Avulsion
562:Bed load
542:Abrasion
170:See also
153:Friction
1386:Aquifer
1379:Related
1335:Rafting
863:Meander
858:Log jam
820:Thalweg
725:Estuary
597:Erosion
534:erosion
446:Springs
401:Current
368:Streams
308:Channel
271:springs
267:streams
1648:Length
1181:WAFLEX
1053:Sewage
936:Floods
878:Riffle
873:Rapids
815:Strath
785:Ravine
710:Canyon
465:Geyser
396:Coulee
381:Bourne
376:Arroyo
279:Rivers
263:Rivers
218:
137:where
60:, and
1558:This
1279:Levee
1264:Flume
1219:Canal
963:Flood
883:Shoal
750:Gully
745:Gulch
715:Chine
700:Bayou
557:Armor
509:Ponor
284:lists
1564:stub
1507:stub
1309:Weir
1274:Leat
938:and
830:Wadi
790:Rill
755:Glen
740:Gill
690:Bank
532:and
497:list
480:list
451:list
386:Burn
269:and
216:ISBN
157:head
39:The
1229:Dam
695:Bar
670:Ait
147:In
68:or
1609::
265:,
200:^
163:.
56:,
52:,
48:,
1595:e
1588:t
1581:v
1570:.
1538:e
1531:t
1524:v
1513:.
453:)
449:(
286:)
282:(
255:e
248:t
241:v
224:.
141:i
139:l
119:i
115:l
103:0
100:=
97:i
89:=
86:P
35:.
33:ψ
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