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Wadi

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142: 565: 584: 509: 635: 483: 604: 392:, and mud drapes show desiccation cracks. Wind activity also generates sedimentary structures, including large-scale cross-stratification and wedge-shaped cross-sets. A typical wadi sequence consists of alternating units of wind and water sediments; each unit ranging from about 10–30 cm (4–12 in). Sediment laid by water shows complete fining upward sequence. Gravels show imbrication. Wind deposits are cross-stratified and covered with mud-cracked deposits. Some horizontal 405: 620: 527: 45: 550: 370: 428:
by the action and prevalence of water. Wadis, as drainage courses, are formed by water, but are distinguished from river valleys or gullies in that surface water is intermittent or ephemeral. Wadis are generally dry year round, except after a rain. The desert environment is characterized by sudden
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Wadis tend to be associated with centers of human population because sub-surface water is sometimes available in them. Nomadic and pastoral desert peoples will rely on seasonal vegetation found in wadis, even in regions as dry as the
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Over time, wadi deposits may become "inverted wadis," where former underground water caused vegetation and sediment to fill in the eroded channel, turning previous washes into ridges running through desert regions.
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Wind also causes sediment deposition. When wadi sediments are underwater or moist, wind sediments are deposited over them. Thus, wadi sediments contain both wind and water sediments.
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Wadi sediments may contain a range of material, from gravel to mud, and the sedimentary structures vary widely. Thus, wadi sediments are the most diverse of all desert environments.
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Flash floods result from severe energy conditions and can result in a wide range of sedimentary structures, including ripples and common plane beds. Gravels commonly display
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The centrality of wadis to water – and human life – in desert environments gave birth to the distinct sub-field of wadi hydrology in the 1990s.
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and seepage of water into the porous sediment. Wadi deposits are thus usually mixed gravels and sands. These sediments are often altered by
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Achite, Mohamed; Ouillon, Sylvain (September 2007). "Suspended sediment transport in a semiarid watershed, Wadi Abd, Algeria (1973–1995)".
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Review of Wheater, Howard ; Al Weshah, Radwan, Hydrology of Wadi systems -IHP Regional Network on Wadi Hydrology in the Arab Region
354:, wadis trend along basin axes at the terminus of fans. Permanent channels do not exist, due to lack of continual water flow. They have 141: 2243: 128: 917:. United States Army Corps of Engineers. Desert Processes Working Group; Knowledge Sciences, Inc. (n.d), retrieved 2008-08-2onments 2223: 2197: 634: 1728: 492: 911:. United States Army Corps of Engineers. Desert Processes Working Group; Knowledge Sciences, Inc. (n.d), retrieved 2008-08-26. 2192: 66: 756: 944: 1894: 1844: 1738: 920:
Gelennie, K. W., 1970 Deserts sedimentary Environments. Developments in Sedimentology, v.14. Elsevier, Amsterdam, 222p.
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Wadis are located on gently sloping, nearly flat parts of deserts; commonly they begin on the distal portions of
81: 2167: 1884: 1849: 1691: 782: 914: 908: 738:. Vol. 2: Jehova – Zuzim and Index. Watch Tower Bible and Tract Society of New York. 1988. p. 1115. 2177: 1869: 1634: 413: 88: 2119: 1977: 1528: 1413: 201: 162: 744:... whereas others are torrents during the rainy season but dry up completely during the rainless season. 1957: 1804: 1766: 1215: 1154: 732: 549: 62: 31: 95: 2187: 1909: 1733: 1493: 1300: 1094: 825: 816: 664: 518: 425: 283: 238: 2083: 2078: 1879: 1723: 1345: 1198: 1119: 1026: 801: 213: 2109: 2022: 1987: 1839: 1355: 1260: 1164: 1056: 989: 694: 299: 77: 1829: 404: 2088: 1927: 1919: 1859: 1819: 1708: 1523: 1285: 1275: 1061: 500: 271: 2238: 2002: 1904: 1809: 1408: 1403: 1320: 1149: 1021: 833: 488: 243: 27:
River valley, especially a dry riverbed that contains water only during times of heavy rain
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The term "wadi" (Arabic) is also used to designate a torrent valley
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Deposition in a wadi is rapid because of the sudden loss of stream
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patterns because of the deficiency of water and the abundance of
2027: 1992: 1508: 1473: 231: 218:'wadi') is the Arabic term traditionally referring to a 954: 1947: 1388: 38: 945:
Arab Center for Studies of Arid Zones and Dry lands (ACSAD)
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Summary: Summary: Drainage Courses, Wadis – Inverted
880:"Visiting Wadi Bani Khalid, Oman: A Desert Paradise" 206: 167: 2097: 2036: 1918: 1780: 1752: 1653: 1625: 1557: 1379: 1246: 1163: 1085: 996: 69:. Unsourced material may be challenged and removed. 731: 429:but infrequent heavy rainfall, often resulting in 408:Triassic wadi deposit near Ogmore-By-Sea, Wales. 282:was used to mean a permanent river, for example: 420:Modern English usage differentiates wadis from 697: – River that periodically ceases to flow 685: – Deep V-shaped valley formed by erosion 966: 570:Dry fluvial channel cutting through columnar 8: 703: – Fertile area in a desert environment 667: – Dry watercourse with flow after rain 222:. In some instances, it may refer to a wet ( 973: 959: 951: 373:Wadi Degla in Egypt during the dry season 270:. Some Spanish toponyms are derived from 129:Learn how and when to remove this message 711:in the Sinai peninsula, holy Muslim site 1572:International scale of river difficulty 722: 679: – Type of valley or drainage zone 478: 7: 935:International Hydrological Programme 661: – Type of desert earth surface 381:Sediments and sedimentary structures 230:that contains water only when heavy 145:Wadi Ghuweir Trail to Feynan, Jordan 67:adding citations to reliable sources 931:IHP REGIONAL WADI HYDROLOGY NETWORK 853:"Wadi Bani Khalid & Wadi Hawer" 517:, a tributary of Wadi Shah, in the 327: 311: 295: 196: 181: 157: 298:, "river of refreshment stalls"), 25: 673: – Deep chasm between cliffs 909:Summary: Drainage Courses, Wadis 633: 618: 602: 582: 563: 548: 525: 507: 481: 334:General morphology and processes 43: 1729:Flooded grasslands and savannas 783:Guadalajara tourist guide, p.5. 266:is very widely found in Arabic 54:needs additional citations for 1: 838:10.1016/j.jhydrol.2007.06.026 781:Ayuntamiento de Guadalajara, 759:. MSN Encarta. Archived from 1895:Universal Soil Loss Equation 1845:Hydrological transport model 1739:Storm Water Management Model 441:, as they travel in complex 947:: Water resources division. 851:Alimsk (20 December 2013). 613:in the United Arab Emirates 497:Ash-Sharqiyyah Region, Oman 277: 261: 207: 168: 2260: 1399:Antecedent drainage stream 878:Pedro (5 September 2014). 792:, retrieved 17 August 2013 352:basin and range topography 29: 2163: 2135:River valley civilization 2018:Riparian-zone restoration 734:Insight on the Scriptures 314:, "river of stones"), or 2244:Arabic words and phrases 2198:Countries without rivers 2173:Rivers by discharge rate 1885:Runoff model (reservoir) 1850:Infiltration (hydrology) 2224:Dry or seasonal streams 1870:River Continuum Concept 1635:Agricultural wastewater 414:Carboniferous Limestone 250:for similar landforms. 2193:River name etymologies 2120:Hydraulic civilization 1978:Floodplain restoration 1754:Point source pollution 1529:Sedimentary structures 625:Wadis in northeastern 597:, United Arab Emirates 417: 374: 330:, "the great river"). 146: 1805:Discharge (hydrology) 1767:Industrial wastewater 1248:Sedimentary processes 407: 396:may also be present. 372: 342:and extend to inland 144: 32:Wadi (disambiguation) 1910:Volumetric flow rate 1494:Riffle-pool sequence 817:Journal of Hydrology 665:Arroyo (watercourse) 519:United Arab Emirates 493:Northern Governorate 328:اَلْوَادِي الْكَبِير 63:improve this article 30:For other uses, see 2084:Whitewater kayaking 2079:Whitewater canoeing 1880:Runoff curve number 1724:Flood pulse concept 886:. Travel With Pedro 884:travelwithpedro.com 830:2007JHyd..343..187A 788:1 July 2012 at the 757:"Arroyo Definition" 400:Hydrological action 2229:Canyons and gorges 2110:Aquatic toxicology 2023:Stream restoration 1988:Infiltration basin 1840:Hydrological model 1356:Sediment transport 1179:Estavelle/Inversac 1057:Subterranean river 730:"Torrent valley". 695:Intermittent river 418: 375: 312:وَادِي الْحِجَارَة 147: 2234:Fluvial landforms 2206: 2205: 2183:Whitewater rivers 2089:Whitewater slalom 1920:River engineering 1820:Groundwater model 1781:River measurement 1709:Flood forecasting 1524:Sedimentary basin 1381:Fluvial landforms 1286:Bed material load 1062:River bifurcation 501:Arabian Peninsula 272:Andalusian Arabic 246:) is used in the 217: 205: 172:), alternatively 166: 139: 138: 131: 113: 16:(Redirected from 2251: 2168:Rivers by length 2003:River morphology 1905:Wetted perimeter 1810:Drainage density 1321:Headward erosion 1150:Perennial stream 1022:Blackwater river 975: 968: 961: 952: 896: 895: 893: 891: 875: 869: 868: 866: 864: 848: 842: 841: 824:(3–4): 187–202. 811: 805: 799: 793: 779: 773: 772: 770: 768: 753: 747: 746: 743: 737: 727: 637: 622: 606: 586: 567: 552: 529: 511: 489:Wadi Bani Khalid 485: 329: 320:al-wādī al-kabīr 313: 297: 296:وَادِي الْقَنَال 280: 264: 212: 210: 200: 198: 183: 171: 161: 159: 134: 127: 123: 120: 114: 112: 71: 47: 39: 21: 2259: 2258: 2254: 2253: 2252: 2250: 2249: 2248: 2209: 2208: 2207: 2202: 2178:Drainage basins 2159: 2093: 2032: 2008:Retention basin 1968:Erosion control 1963:Detention basin 1914: 1830:Hjulström curve 1782: 1776: 1748: 1692:Non-water flood 1649: 1621: 1567:Helicoidal flow 1553: 1454:Fluvial terrace 1449:Floating island 1375: 1250: 1242: 1233:Rhythmic spring 1167: 1159: 1140:Stream gradient 1081: 1067:River ecosystem 1032:Channel pattern 1000: 992: 979: 927: 905: 900: 899: 889: 887: 877: 876: 872: 862: 860: 857:omantripper.com 850: 849: 845: 813: 812: 808: 800: 796: 790:Wayback Machine 780: 776: 766: 764: 763:on 6 April 2009 755: 754: 750: 741: 729: 728: 724: 719: 714: 659:Alluvial desert 654: 649: 648: 647: 644: 638: 629: 623: 614: 607: 598: 591:Al Bithnah Fort 587: 578: 568: 559: 553: 544: 530: 521: 512: 503: 486: 474: 454: 402: 383: 336: 304:wādī al-ḥijārah 256: 186:Maghrebi Arabic 135: 124: 118: 115: 72: 70: 60: 48: 35: 28: 23: 22: 15: 12: 11: 5: 2257: 2255: 2247: 2246: 2241: 2236: 2231: 2226: 2221: 2211: 2210: 2204: 2203: 2201: 2200: 2195: 2190: 2185: 2180: 2175: 2170: 2164: 2161: 2160: 2158: 2157: 2152: 2147: 2142: 2137: 2132: 2127: 2122: 2117: 2112: 2107: 2101: 2099: 2095: 2094: 2092: 2091: 2086: 2081: 2076: 2071: 2069:Stone skipping 2066: 2061: 2056: 2051: 2046: 2040: 2038: 2034: 2033: 2031: 2030: 2025: 2020: 2015: 2010: 2005: 2000: 1995: 1990: 1985: 1980: 1975: 1970: 1965: 1960: 1955: 1953:Drop structure 1950: 1945: 1940: 1935: 1933:Balancing lake 1930: 1924: 1922: 1916: 1915: 1913: 1912: 1907: 1902: 1897: 1892: 1887: 1882: 1877: 1872: 1867: 1862: 1860:Playfair's law 1857: 1852: 1847: 1842: 1837: 1832: 1827: 1822: 1817: 1815:Exner equation 1812: 1807: 1802: 1800:Bradshaw model 1797: 1792: 1786: 1784: 1778: 1777: 1775: 1774: 1769: 1764: 1758: 1756: 1750: 1749: 1747: 1746: 1741: 1736: 1731: 1726: 1721: 1716: 1711: 1706: 1701: 1696: 1695: 1694: 1689: 1687:Urban flooding 1679: 1674: 1672:Crevasse splay 1669: 1667:100-year flood 1663: 1661: 1651: 1650: 1648: 1647: 1642: 1637: 1631: 1629: 1627:Surface runoff 1623: 1622: 1620: 1619: 1614: 1609: 1607:Stream capture 1604: 1599: 1594: 1589: 1584: 1579: 1574: 1569: 1563: 1561: 1555: 1554: 1552: 1551: 1546: 1541: 1536: 1531: 1526: 1521: 1519:Rock-cut basin 1516: 1511: 1506: 1501: 1496: 1491: 1486: 1481: 1476: 1471: 1466: 1461: 1456: 1451: 1446: 1441: 1436: 1431: 1426: 1421: 1416: 1411: 1406: 1401: 1396: 1391: 1385: 1383: 1377: 1376: 1374: 1373: 1368: 1363: 1361:Suspended load 1358: 1353: 1351:Secondary flow 1348: 1343: 1341:Retrogradation 1338: 1333: 1328: 1323: 1318: 1313: 1308: 1306:Dissolved load 1303: 1298: 1293: 1288: 1283: 1278: 1273: 1268: 1263: 1257: 1255: 1244: 1243: 1241: 1240: 1238:Spring horizon 1235: 1230: 1225: 1223:Mineral spring 1220: 1219: 1218: 1208: 1207: 1206: 1204:list in the US 1201: 1191: 1186: 1181: 1175: 1173: 1161: 1160: 1158: 1157: 1152: 1147: 1142: 1137: 1132: 1130:Stream channel 1127: 1122: 1117: 1112: 1107: 1102: 1097: 1091: 1089: 1083: 1082: 1080: 1079: 1074: 1069: 1064: 1059: 1054: 1052:Drainage basin 1049: 1044: 1039: 1034: 1029: 1024: 1019: 1014: 1012:Alluvial river 1008: 1006: 994: 993: 980: 978: 977: 970: 963: 955: 949: 948: 942: 926: 925:External links 923: 922: 921: 918: 912: 904: 901: 898: 897: 870: 859:. Oman Tripper 843: 806: 794: 774: 748: 721: 720: 718: 715: 713: 712: 704: 698: 692: 686: 680: 674: 668: 662: 655: 653: 650: 646: 645: 639: 632: 630: 624: 617: 615: 608: 601: 599: 588: 581: 579: 569: 562: 560: 555:Oued Tissint, 554: 547: 545: 531: 524: 522: 513: 506: 504: 487: 480: 477: 476: 475: 473: 470: 453: 450: 401: 398: 382: 379: 356:braided stream 335: 332: 255: 252: 137: 136: 51: 49: 42: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 2256: 2245: 2242: 2240: 2237: 2235: 2232: 2230: 2227: 2225: 2222: 2220: 2217: 2216: 2214: 2199: 2196: 2194: 2191: 2189: 2186: 2184: 2181: 2179: 2176: 2174: 2171: 2169: 2166: 2165: 2162: 2156: 2153: 2151: 2150:Surface water 2148: 2146: 2145:Sacred waters 2143: 2141: 2138: 2136: 2133: 2131: 2130:Riparian zone 2128: 2126: 2123: 2121: 2118: 2116: 2115:Body of water 2113: 2111: 2108: 2106: 2103: 2102: 2100: 2096: 2090: 2087: 2085: 2082: 2080: 2077: 2075: 2072: 2070: 2067: 2065: 2064:Riverboarding 2062: 2060: 2059:River surfing 2057: 2055: 2052: 2050: 2047: 2045: 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1110:Chalk stream 1072:River source 1047:Distributary 903:Bibliography 888:. Retrieved 883: 873: 861:. Retrieved 856: 846: 821: 815: 809: 797: 777: 765:. Retrieved 761:the original 751: 739: 733: 725: 707: 611:Wadi Shawkah 466: 455: 447: 443:transhumance 435: 431:flash floods 419: 390:imbrications 387: 384: 376: 337: 319: 316:Guadalquivir 303: 287: 275: 259: 257: 237: 236: 220:river valley 188: 173: 149: 148: 125: 116: 106: 99: 92: 85: 73: 61:Please help 56:verification 53: 36: 2049:Fly fishing 1973:Fish ladder 1958:Daylighting 1677:Flash flood 1640:First flush 1587:Plunge pool 1311:Downcutting 1296:Debris flow 1271:Aggradation 1145:Stream pool 534:Nahal Paran 464:processes. 364:flash flood 300:Guadalajara 284:Guadalcanal 2213:Categories 2155:Wild river 1835:Hydrograph 1825:Hack's law 1790:Baer's law 1734:Inundation 1719:Floodplain 1659:stormwater 1617:Whitewater 1489:Oxbow lake 1326:Knickpoint 1301:Deposition 1194:Hot spring 1135:Streamflow 1125:Stream bed 1042:Confluence 717:References 640:A wadi in 119:April 2018 89:newspapers 2125:Limnology 2074:Triathlon 2044:Canyoning 2013:Revetment 1943:Check dam 1855:Main stem 1612:Waterfall 1499:Point bar 1484:Mouth bar 1424:Billabong 1371:Water gap 1366:Wash load 1346:Saltation 1266:Anabranch 1189:Holy well 1077:Tributary 767:2 October 360:sediments 348:dry lakes 258:The term 254:Etymology 224:ephemeral 202:romanized 163:romanized 1928:Aqueduct 1795:Baseflow 1762:Effluent 1439:Cut bank 1404:Avulsion 1281:Bed load 1261:Abrasion 890:25 March 863:25 March 786:Archived 708:Wād Ṭuwā 652:See also 595:Wadi Ham 532:Wadi in 515:Wadi Jib 458:velocity 452:Deposits 445:routes. 268:toponyms 248:Americas 234:occurs. 228:riverbed 2239:Valleys 2105:Aquifer 2098:Related 2054:Rafting 1582:Meander 1577:Log jam 1539:Thalweg 1444:Estuary 1316:Erosion 1253:erosion 1165:Springs 1120:Current 1087:Streams 1027:Channel 990:springs 986:streams 826:Bibcode 642:Socotra 593:in the 576:Namibia 557:Morocco 491:in the 472:Gallery 422:canyons 344:sabkhas 318:, from 244:Spanish 216:  204::  165::  103:scholar 1900:WAFLEX 1772:Sewage 1655:Floods 1597:Riffle 1592:Rapids 1534:Strath 1504:Ravine 1429:Canyon 1184:Geyser 1115:Coulee 1100:Bourne 1095:Arroyo 998:Rivers 982:Rivers 939:UNESCO 742:  677:Coulee 671:Canyon 572:basalt 542:Israel 462:eolian 439:Sahara 426:washes 410:Clasts 324:Arabic 308:Arabic 292:Arabic 274:where 239:Arroyo 197:וָאדִי 193:Hebrew 178:Arabic 158:وَادِي 154:Arabic 105:  98:  91:  84:  78:"Wadi" 76:  2219:Wadis 1998:Levee 1983:Flume 1938:Canal 1682:Flood 1602:Shoal 1469:Gully 1464:Gulch 1434:Chine 1419:Bayou 1276:Armor 1228:Ponor 1003:lists 701:Oasis 689:Gully 683:Gulch 627:Egypt 538:Negev 394:loess 350:. In 302:from 286:from 110:JSTOR 96:books 18:Wadis 2028:Weir 1993:Leat 1657:and 1549:Wadi 1509:Rill 1474:Glen 1459:Gill 1409:Bank 1251:and 1216:list 1199:list 1170:list 1105:Burn 988:and 892:2018 865:2018 769:2009 609:The 589:The 412:are 278:wādī 262:wādī 232:rain 214:lit. 208:vadi 189:Oued 182:وَاد 169:wādī 150:Wadi 82:news 1948:Dam 1414:Bar 1389:Ait 834:doi 822:343 574:in 495:of 424:or 346:or 184:), 174:wād 65:by 2215:: 984:, 937:, 933:, 882:. 855:. 832:. 820:. 540:, 536:, 499:, 366:. 326:: 310:: 294:: 226:) 211:, 199:, 195:: 191:, 180:: 160:, 156:: 1172:) 1168:( 1005:) 1001:( 974:e 967:t 960:v 941:. 894:. 867:. 840:. 836:: 828:: 771:. 416:. 322:( 306:( 290:( 242:( 176:( 152:( 132:) 126:( 121:) 117:( 107:· 100:· 93:· 86:· 59:. 34:. 20:)

Index

Wadis
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Arabic
romanized
Arabic
Maghrebi Arabic
Hebrew
romanized
lit.
river valley
ephemeral
riverbed
rain
Arroyo
Spanish
Americas
toponyms
Andalusian Arabic

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