Knowledge (XXG)

Chehalis River (Washington)

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69: 97: 698: 36: 52: 104: 76: 808:(WDFW), in association with Native American tribes, environmental groups, scientists, and local citizens, organized a partnership in 2014 named the Chehalis Basin Strategy to propose and research a combination of plans along the Chehalis River to mitigate flooding and to restore aquatic habitat, particularly for local 706:
cities, such as Aberdeen, Centralia, Chehalis, and Hoquiam. The river continues to be a cultural and economic staple for the Confederated Tribes of the Chehalis Reservation and the Quinault Indian Nation. It begins at the confluence of the West Fork Chehalis River and East Fork Chehalis River, in southwestern
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The Chehalis River is the largest drainage basin completely within the state. The basin covers approximately 2,700 square miles (7,000 km) in Grays Harbor, Lewis, Mason, and Thurston counties. The waterway is an economic necessity, and a source for food, water, and recreation for several large
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was closed between exits 68 and 88 because of flooding from the Chehalis River, causing the roadway to be under about 10 feet (3.0 m) of water. The recommended detour added about four hours and 280 miles (450 km). It was not expected to reopen for several days. However, upon breaching a
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In 2010, the flood authority implemented the installation of an online flood warning system available to residents in the Chehalis basin. Known as the Chehalis Basin Flood Warning System, it expanded a sensor network already in place, providing information on rainfall and temperature, as well as
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During the January 7, 2009, Pacific Northwest storms, a 20-mile (32 km) stretch of Interstate 5 was closed in and around the cities of Centralia and Chehalis because of flooding from the Chehalis River, causing the roadway to be under several feet of water. Since the main east–west mountain
844:. In 2018, the Chehalis was the only river basin in the state in which any classification of salmon was not listed as an endangered species, despite decreasing numbers of the fish. A petition was filed by conservation groups in 2023 to list the Chinook salmon as endangered under the 617:
to use the river as part of a canal stretching from Olympia to Grays Harbor. The idea was reintroduced multiple times during the 19th century but no official acts, nor construction of the waterway, materialized. Versions of the canal project persisted after the build of the
685:, is part of only two river basins in Washington state that are granted protections and rights under "in-stream flow regulation". Passed in 1976, the law allows the river the right to maintain its own water levels. Unfettered access to the river is granted to 689:"senior" rights holders as they existed before the 1976 rule went into effect; the senior holders mostly consist of tribal communities and farmers. As of 2023, there are 93 recorded junior water rights holders, mostly homeowners, in the Chehalis basin. 791:
Flood control and concerns for the Chehalis River and its watershed is managed by the Chehalis River Basin Flood Authority, which is overseen and funded by the Washington Department of Ecology Office of Chehalis Basin (OCB).
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additional gauges. Alert warnings are sent via email and provide information on 13 rivers in the area. The system won the 2023 National Hydrologic Warning Council (NHWC) Operational Excellence Award
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are stakeholders of the river. Though the people ceded the lands surrounding the Chehalis River upon the signing of the 1856 Treaty of Olympia, the tribes have retained fishing and hatchery rights.
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and glacial runoff formed a large torrent of meltwater. This carved a large oversized valley that is much larger than the current river could have produced. The river's mouth was out near current
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passes were also closed during this event, the flooding from the Chehalis River essentially cut off interstate traffic to the Puget Sound area from the south, and no detour was available.
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in the United States. It originates in several forks in southwestern Washington, flows east, then north, then west, in a large curve, before emptying into
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and other low mountains of southwestern Washington. The South Fork Chehalis River joins the main river a few miles west of the city of
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joins. At this point the river has become Grays Harbor. Before the estuary of Grays Harbor empties into the Pacific Ocean, the
150: 20: 813: 589:. The lake drained through the Chehalis River Valley and the slow deposits of glacial sediment raised the depressed valley. 1097: 949: 1546: 1163: 757:, after which the Chehalis River becomes increasingly affected by tides and widens into Grays Harbor estuary. The city of 1442: 1072: 731: 925: 657: 162: 1130: 1447: 640: 1251: 857: 707: 209: 158: 154: 1620: 1607: 1594: 884: 1016:"Vashon glacier begins to melt and recede from Puget Sound region and Columbia Basin around 16,900 years ago" 467:
South Fork Chehalis River, Newaukum River, Skookumchuck River, Satsop River, Wynoochee River, Wishkah River
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which is planned to limit catastrophic damage from 100-year floods within the Chehalis River Basin.
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joins. After Centralia, the Chehalis River flows north and west, collecting tributaries such as the
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joins the Chehalis River at Chehalis, after which the river turns north, flowing by the city of
994: 747: 1226:(Press release). State of Washington Office of the Governor. December 3, 2007. Archived from 1200: 1171: 1138: 1105: 774: 710:. From there the Chehalis flows north and east, collecting tributary streams that drain the 653: 623: 480: 953: 929: 841: 743: 682: 614: 1584: 585:
The glacial sheet tongue is known as the Puget Lobe which, when it began to melt, formed
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Counties within the Chehalis River basin, various other regional governments, and the
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U.S. Geological Survey Geographic Names Information System: South Fork Chehalis River
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U.S. Geological Survey Geographic Names Information System: West Fork Chehalis River
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U.S. Geological Survey Geographic Names Information System: East Fork Chehalis River
1381:"'Critical' low flows in Chehalis River Basin threaten aquatic species, agriculture" 697: 35: 1498: 906: 739: 735: 644: 619: 530: 41: 1047:"Federal 'Endangered' Listing Sought for Chehalis River's Spring Chinook, Others" 1499:"Learn about how you can help ensure a prosperous future for the Chehalis Basin" 1109: 1073:"All Over The Map: Forgotten plans for a canal between Olympia and Grays Harbor" 946: 833: 829: 559: 269: 1175: 51: 968: 1257:(Press release). State of Washington Office of the Governor. December 3, 2007 314: 301: 238: 225: 922: 1355:"Headwaters to Harbor: What are Water Rights? Why Does Lewis County Care?" 1301: 1275: 885:
U.S. Geological Survey Geographic Names Information System: Chehalis River
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dike on Dec. 5, 2007, the water receded more quickly than anticipated.
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lies at the mouth of the Chehalis River. Just east of Aberdeen, the
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Chehalis River Valley (left), Grays Harbor (middle distance) and
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of the Pacific Ocean. The river is the largest solely contained
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joins the Chehalis, and just west, between Aberdeen and
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The river is home to several salmon species, including
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when the tongue of the glacial ice sheet covering the
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Chehalis River Basin Flood Authority - Inundation Map
513: 504: 1443:"Chehalis Basin work includes fish passage projects" 498: 492: 489: 461: 453: 448: 434: 424: 416: 398: 388: 378: 368: 360: 348: 340: 330: 291: 278: 268: 254: 215: 203: 195: 186: 168: 146: 136: 128: 123: 103: 75: 28: 1547:"$ 70 Million Chehalis Basin Board Budget Stalled" 986: 1197:"Rain floods streets; mudslides shut down Amtrak" 626:, with scaled-down plans lasting into the 1970s. 603:Confederated Tribes of the Chehalis Reservation 111:Chehalis River (Washington) (the United States) 1302:"Northwest floods close roads, stall commerce" 1329:"Solution to flooding problem a long way off" 1276:"Roads slowly reopen in storm-hit Washington" 1131:"I-5 near Chehalis may be shut down for days" 664:declared a state of emergency on December 3. 8: 753:The Wynoochee River joins the Chehalis near 574:at the end of the ice age flooded the broad 1590:USGS Chehalis River Basin schematic diagram 1467: 1465: 613:Plans were raised during the presidency of 1545:Eric Rosane; Claudia Yaw (July 21, 2021). 806:Washington Department of Fish and Wildlife 660:, was also disrupted. Washington governor 554:The river was once much larger during the 1649:Rivers of Grays Harbor County, Washington 1575:Chehalis Basin Flood Warning System (FWS) 932:, The Columbia Gazetteer of North America 440:11,208 cu ft/s (317.4 m/s) 404:47,000 cu ft/s (1,300 m/s) 83:Mouth of the Chehalis River in Washington 19:For other places with the same name, see 1472:The Chronicle staff (December 1, 2023). 1436: 1434: 384:6,425 cu ft/s (181.9 m/s) 16:River in Washington state, United States 1407: 1405: 1403: 1401: 874: 746:, which drain the southern part of the 1379:Vander Stoep, Isabel (July 24, 2023). 1040: 1038: 1036: 880: 878: 840:, and the basin is also a habitat for 25: 1654:Rivers of Thurston County, Washington 1353:Vander Stoep, Isabel (May 25, 2022). 1051:The Chronicle (Centralia, Washington) 1045:Vander Stoep, Isabel (May 24, 2023). 1014:Ott, Jennnifer (September 24, 2012). 969:Water Resource Data, Washington, 2005 964: 962: 942: 940: 938: 863:Flood history in Chehalis, Washington 352:2,660 sq mi (6,900 km) 7: 947:Overview of the Chehalis River Basin 902: 900: 787:Chehalis River Basin Flood Authority 643:, a 20-mile (32 km) stretch of 1308:. Associated Press. January 9, 2009 1282:. Associated Press. January 7, 2009 681:The Chehalis River, along with the 394:440 cu ft/s (12 m/s) 56:Map of the Chehalis River watershed 1659:Rivers of Lewis County, Washington 993:. University of Washington Press. 14: 1327:Lange, Larry (January 8, 2009). 479: 102: 95: 74: 67: 50: 34: 1412:Schwartz, Eric (June 5, 2009). 1071:Banel, Feliks (July 27, 2020). 816:, and a flood retention dam in 701:The Upper Chehalis near Pe, Ell 582:, known today as Grays Harbor. 21:Chehalis River (disambiguation) 1441:Nailon, Jordan (May 1, 2018). 1333:The Seattle Post-Intelligencer 1252:"Proclamation by the Governor" 1221:"Proclamation by the Governor" 293: • coordinates 217: • coordinates 86:Show map of Washington (state) 1: 1585:USGS Chehalis River Basin map 187:Physical characteristics 114:Show map of the United States 1644:Rivers of Washington (state) 989:Washington State Place Names 332: • elevation 256: • elevation 985:Phillips, James W. (1971). 658:Vancouver, British Columbia 426: • location 370: • location 280: • location 205: • location 1675: 1448:The Daily World (Aberdeen) 814:Chehalis–Centralia Airport 784: 641:Great Coastal Gale of 2007 436: • average 400: • maximum 390: • minimum 380: • average 260:1,000 ft (300 m) 18: 1526:. Chehalis Basin Strategy 1524:"Chehalis Basin Strategy" 952:October 19, 2007, at the 858:List of Washington rivers 444: 412: 408: 356: 344:115 mi (185 km) 264: 191: 61: 49: 33: 956:, Chehalis River Council 635:December 3, 2007, floods 609:Washington state history 463: • right 1503:Chehalis River Alliance 928:March 30, 2005, at the 800:Chehalis Basin Strategy 668:January 7, 2009, floods 593:Native American history 846:Endangered Species Act 702: 652:train service between 599:Quinault Indian Nation 315:46.95806°N 123.83472°W 239:46.45167°N 123.29167°W 700: 44:Valley (along bottom) 1233:on February 27, 2008 587:Glacial Lake Russell 430:mouth (Grays Harbor) 336:0 ft (0 m) 320:46.95806; -123.83472 244:46.45167; -123.29167 550:Last Glacial Period 449:Basin features 311: /  235: /  728:Skookumchuck River 703: 662:Christine Gregoire 748:Olympic Mountains 572:rising sea levels 471: 470: 1666: 1562: 1561: 1559: 1557: 1542: 1536: 1535: 1533: 1531: 1520: 1514: 1513: 1511: 1509: 1495: 1489: 1488: 1486: 1484: 1469: 1460: 1459: 1457: 1455: 1438: 1429: 1428: 1426: 1424: 1409: 1396: 1395: 1393: 1391: 1376: 1370: 1369: 1367: 1365: 1350: 1344: 1343: 1341: 1339: 1324: 1318: 1317: 1315: 1313: 1298: 1292: 1291: 1289: 1287: 1272: 1266: 1265: 1263: 1262: 1256: 1248: 1242: 1241: 1239: 1238: 1232: 1225: 1217: 1211: 1210: 1208: 1207: 1201:The News Tribune 1193: 1187: 1186: 1184: 1183: 1174:. 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Retrieved 1019: 1009: 988: 980: 918: 913:coordinates. 907:Google Earth 838:Fall Chinook 827: 803: 794: 790: 752: 740:Satsop River 736:Chehalis Gap 726:, where the 708:Lewis County 704: 680: 677:Water rights 671: 645:Interstate 5 638: 620:Panama Canal 612: 596: 584: 553: 531:Grays Harbor 474: 472: 210:Lewis County 151:Grays Harbor 42:Satsop River 1483:February 1, 1020:HistoryLink 732:Black River 639:During the 560:Puget Sound 454:Tributaries 318: / 242: / 230:123°17′30″W 1638:Categories 1261:2017-07-11 1237:2007-12-05 1206:2007-12-06 1182:2007-12-06 1149:2007-12-04 1116:2007-12-06 869:References 578:to form a 527:Washington 349:Basin size 306:123°50′5″W 303:46°57′29″N 141:Washington 755:Montesano 724:Centralia 417:Discharge 361:Discharge 227:46°27′6″N 177:Centralia 1556:July 25, 1530:June 27, 1508:July 27, 1390:July 25, 1364:July 25, 1306:NBC News 1280:NBC News 1056:June 23, 1025:April 3, 950:Archived 926:Archived 852:See also 824:Wildlife 759:Aberdeen 716:Chehalis 630:Flooding 601:and the 568:Westport 286:Aberdeen 181:Chehalis 173:Aberdeen 163:Thurston 147:Counties 124:Location 1423:June 4, 1338:May 16, 1312:May 16, 1286:May 16, 1082:June 3, 777:joins. 767:Hoquiam 564:Olympia 556:Ice Age 545:History 535:estuary 521:) is a 129:Country 1454:May 7, 997:  818:Pe Ell 769:, the 718:. The 693:Course 656:, and 650:Amtrak 570:until 457:  420:  364:  341:Length 199:  196:Source 169:Cities 1255:(PDF) 1231:(PDF) 1224:(PDF) 533:, an 523:river 270:Mouth 159:Mason 155:Lewis 137:State 1629:GNIS 1625:USGS 1616:GNIS 1612:USGS 1603:GNIS 1599:USGS 1558:2023 1532:2023 1510:2023 1485:2024 1456:2024 1425:2024 1392:2023 1366:2023 1340:2024 1314:2024 1288:2024 1168:KATU 1135:KATU 1102:KPTV 1084:2024 1058:2023 1027:2024 995:ISBN 973:USGS 911:GNIS 893:GNIS 889:USGS 836:and 834:coho 830:chum 742:and 597:The 518:-lis 514:shə- 473:The 580:ria 525:in 516:HAY 1640:: 1627:, 1623:, 1614:, 1610:, 1601:, 1597:, 1549:. 1501:. 1476:. 1464:^ 1445:. 1433:^ 1416:. 1400:^ 1383:. 1357:. 1331:. 1304:. 1278:. 1199:. 1170:, 1166:. 1137:, 1133:. 1104:, 1100:. 1075:. 1049:. 1035:^ 1018:. 971:, 961:^ 937:^ 899:^ 891:, 887:, 877:^ 848:. 832:, 750:. 496:eɪ 179:, 175:, 161:, 157:, 153:, 1560:. 1534:. 1512:. 1487:. 1458:. 1427:. 1394:. 1368:. 1342:. 1316:. 1290:. 1264:. 1240:. 1209:. 1185:. 1152:. 1119:. 1086:. 1060:. 1029:. 1003:. 975:. 508:/ 505:s 502:ɪ 499:l 493:h 490:ˈ 487:ə 484:ʃ 481:/ 477:( 23:.

Index

Chehalis River (disambiguation)

Satsop River

Chehalis River (Washington) is located in Washington (state)
Chehalis River (Washington) is located in the United States
Washington
Grays Harbor
Lewis
Mason
Thurston
Aberdeen
Centralia
Chehalis
Lewis County
46°27′6″N 123°17′30″W / 46.45167°N 123.29167°W / 46.45167; -123.29167
Mouth
Aberdeen
46°57′29″N 123°50′5″W / 46.95806°N 123.83472°W / 46.95806; -123.83472
/ʃəˈhlɪs/
shə-HAY-lis
river
Washington
Grays Harbor
estuary
drainage basin
Ice Age
Puget Sound
Olympia
Westport

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