Hydrologic Unit Code
|
Water Resource Region
|
Subregion
|
Accounting Unit
|
Cataloging Unit
|
State(s)
|
19010101 |
Alaska |
Southeast Alaska |
Southern Southeast Alaska |
Southeast Mainland River |
Alaska
|
19010102 |
Alaska |
Southeast Alaska |
Southern Southeast Alaska |
Ketchikan River |
Alaska
|
19010103 |
Alaska |
Southeast Alaska |
Southern Southeast Alaska |
Prince of Wales River |
Alaska
|
19010201 |
Alaska |
Southeast Alaska |
Central Southeast Alaska |
Mainland River |
Alaska
|
19010202 |
Alaska |
Southeast Alaska |
Central Southeast Alaska |
Kuiu River-Kupreanof River-Mitkof River-Etolin River-Zarembo River-Wrangell Islands |
Alaska
|
19010203 |
Alaska |
Southeast Alaska |
Central Southeast Alaska |
Baranof River-Chichagof Islands |
Alaska
|
19010204 |
Alaska |
Southeast Alaska |
Central Southeast Alaska |
Admiralty Island |
Alaska
|
19010301 |
Alaska |
Southeast Alaska |
Northern Southeast Alaska |
Lynn Canal River |
Alaska
|
19010302 |
Alaska |
Southeast Alaska |
Northern Southeast Alaska |
Glacier Bay |
Alaska
|
19010303 |
Alaska |
Southeast Alaska |
Northern Southeast Alaska |
Chilkat River-Skagway River |
Alaska
|
19010401 |
Alaska |
Southeast Alaska |
Gulf of Alaska |
Yakutat Bay |
Alaska
|
19010402 |
Alaska |
Southeast Alaska |
Gulf of Alaska |
Bering Glacier River |
Alaska
|
19020101 |
Alaska |
South Central Alaska |
Copper River |
Upper Copper River |
Alaska
|
19020102 |
Alaska |
South Central Alaska |
Copper River |
Middle Copper River |
Alaska
|
19020103 |
Alaska |
South Central Alaska |
Copper River |
Chitina River |
Alaska
|
19020104 |
Alaska |
South Central Alaska |
Copper River |
Lower Copper River |
Alaska
|
19020201 |
Alaska |
South Central Alaska |
Prince William Sound |
Eastern Prince William Sound |
Alaska
|
19020202 |
Alaska |
South Central Alaska |
Prince William Sound |
Western Prince William Sound |
Alaska
|
19020301 |
Alaska |
South Central Alaska |
Kenai Peninsula |
Lower Kenai Peninsula |
Alaska
|
19020302 |
Alaska |
South Central Alaska |
Kenai Peninsula |
Upper Kenai Peninsula |
Alaska
|
19020401 |
Alaska |
South Central Alaska |
Knik Arm |
Anchorage River |
Alaska
|
19020402 |
Alaska |
South Central Alaska |
Knik Arm |
Matansuka River |
Alaska
|
19020501 |
Alaska |
South Central Alaska |
Susitna River |
Upper Susitna River |
Alaska
|
19020502 |
Alaska |
South Central Alaska |
Susitna River |
Chulitna River |
Alaska
|
19020503 |
Alaska |
South Central Alaska |
Susitna River |
Talkeetna River |
Alaska
|
19020504 |
Alaska |
South Central Alaska |
Susitna River |
Yentna River |
Alaska
|
19020505 |
Alaska |
South Central Alaska |
Susitna River |
Lower Susitna River |
Alaska
|
19020601 |
Alaska |
South Central Alaska |
Western Cook Inlet |
Redoubt River-Trading Bays |
Alaska
|
19020602 |
Alaska |
South Central Alaska |
Western Cook Inlet |
Tuxdeni River-Kamishak Bays |
Alaska
|
19020701 |
Alaska |
South Central Alaska |
Kodiak Islands-Shelikof Strait |
Kodiak Islands-Afognak Islands |
Alaska
|
19020702 |
Alaska |
South Central Alaska |
Kodiak Islands-Shelikof Strait |
Shelikof Strait |
Alaska
|
19030101 |
Alaska |
Southwest Alaska |
Aleutian Islands |
Cold Bay |
Alaska
|
19030102 |
Alaska |
Southwest Alaska |
Aleutian Islands |
Fox Islands |
Alaska
|
19030103 |
Alaska |
Southwest Alaska |
Aleutian Islands |
Western Aleutian River |
Alaska
|
19030104 |
Alaska |
Southwest Alaska |
Aleutian Islands |
Pribilof Islands |
Alaska
|
19030201 |
Alaska |
Southwest Alaska |
Kvichak River-Port Heiden |
Port Heiden |
Alaska
|
19030202 |
Alaska |
Southwest Alaska |
Kvichak River-Port Heiden |
Ugashik Bay |
Alaska
|
19030203 |
Alaska |
Southwest Alaska |
Kvichak River-Port Heiden |
Egegik Bay |
Alaska
|
19030204 |
Alaska |
Southwest Alaska |
Kvichak River-Port Heiden |
Naknek River |
Alaska
|
19030205 |
Alaska |
Southwest Alaska |
Kvichak River-Port Heiden |
Lake Clark |
Alaska
|
19030206 |
Alaska |
Southwest Alaska |
Kvichak River-Port Heiden |
Lake Iliamna |
Alaska
|
19030301 |
Alaska |
Southwest Alaska |
Nushagak River |
Upper Nushagak River |
Alaska
|
19030302 |
Alaska |
Southwest Alaska |
Nushagak River |
Mulchatna River |
Alaska
|
19030303 |
Alaska |
Southwest Alaska |
Nushagak River |
Lower Nushagak River |
Alaska
|
19030304 |
Alaska |
Southwest Alaska |
Nushagak River |
Wood River |
Alaska
|
19030305 |
Alaska |
Southwest Alaska |
Nushagak River |
Togiak River |
Alaska
|
19030401 |
Alaska |
Southwest Alaska |
Upper Kuskokwim River |
North Fork Kuskokwim River |
Alaska
|
19030402 |
Alaska |
Southwest Alaska |
Upper Kuskokwim River |
Farewll Lake |
Alaska
|
19030403 |
Alaska |
Southwest Alaska |
Upper Kuskokwim River |
Takotna River |
Alaska
|
19030404 |
Alaska |
Southwest Alaska |
Upper Kuskokwim River |
Holitna River |
Alaska
|
19030405 |
Alaska |
Southwest Alaska |
Upper Kuskokwim River |
Stony River |
Alaska
|
19030501 |
Alaska |
Southwest Alaska |
Lower Kuskokwim River |
Aniak River |
Alaska
|
19030502 |
Alaska |
Southwest Alaska |
Lower Kuskokwim River |
Kuskokwim Delta |
Alaska
|
19030503 |
Alaska |
Southwest Alaska |
Lower Kuskokwim River |
Nunavak River-St. Matthew Islands |
Alaska
|
19040101 |
Alaska |
Yukon Alaska |
Canada |
White River |
Alaska
|
19040102 |
Alaska |
Yukon Alaska |
Canada |
Ladue River |
Alaska
|
19040103 |
Alaska |
Yukon Alaska |
Canada |
Sixtymile River |
Alaska
|
19040104 |
Alaska |
Yukon Alaska |
Canada |
Fortymile River |
Alaska
|
19040201 |
Alaska |
Yukon Alaska |
Porcupine River |
Old Crow River |
Alaska
|
19040202 |
Alaska |
Yukon Alaska |
Porcupine River |
Coleen River |
Alaska
|
19040203 |
Alaska |
Yukon Alaska |
Porcupine River |
Sheenjek River |
Alaska
|
19040204 |
Alaska |
Yukon Alaska |
Porcupine River |
Black River |
Alaska
|
19040205 |
Alaska |
Yukon Alaska |
Porcupine River |
Porcupine Flats |
Alaska
|
19040301 |
Alaska |
Yukon Alaska |
Chandalar River-Christian River |
Middle Fork Chandalar River-North Fork Chandalar River |
Alaska
|
19040302 |
Alaska |
Yukon Alaska |
Chandalar River-Christian River |
East Fork Chandalar River |
Alaska
|
19040303 |
Alaska |
Yukon Alaska |
Chandalar River-Christian River |
Christian River |
Alaska
|
19040304 |
Alaska |
Yukon Alaska |
Chandalar River-Christian River |
Lower Chandalar River |
Alaska
|
19040401 |
Alaska |
Yukon Alaska |
Upper Yukon River |
Eagle To Circle River |
Alaska
|
19040402 |
Alaska |
Yukon Alaska |
Upper Yukon River |
Birch River-Beaver Creeks River |
Alaska
|
19040403 |
Alaska |
Yukon Alaska |
Upper Yukon River |
Yukon Flats |
Alaska
|
19040404 |
Alaska |
Yukon Alaska |
Upper Yukon River |
Ramparts River |
Alaska
|
19040501 |
Alaska |
Yukon Alaska |
Tanana River |
Nebesna River-Chisana River |
Alaska
|
19040502 |
Alaska |
Yukon Alaska |
Tanana River |
Tok River |
Alaska
|
19040503 |
Alaska |
Yukon Alaska |
Tanana River |
Healy Lake |
Alaska
|
19040504 |
Alaska |
Yukon Alaska |
Tanana River |
Delta River |
Alaska
|
19040505 |
Alaska |
Yukon Alaska |
Tanana River |
Salcha River |
Alaska
|
19040506 |
Alaska |
Yukon Alaska |
Tanana River |
Chena River |
Alaska
|
19040507 |
Alaska |
Yukon Alaska |
Tanana River |
Tanana River |
Alaska
|
19040508 |
Alaska |
Yukon Alaska |
Tanana River |
Nenana River |
Alaska
|
19040509 |
Alaska |
Yukon Alaska |
Tanana River |
Tolovana River |
Alaska
|
19040510 |
Alaska |
Yukon Alaska |
Tanana River |
Kantishna River |
Alaska
|
19040511 |
Alaska |
Yukon Alaska |
Tanana River |
Lower Tanana River |
Alaska
|
19040601 |
Alaska |
Yukon Alaska |
Koyukuk River |
Upper Koyukuk River |
Alaska
|
19040602 |
Alaska |
Yukon Alaska |
Koyukuk River |
South Fork Koyukuk River |
Alaska
|
19040603 |
Alaska |
Yukon Alaska |
Koyukuk River |
Alatna River |
Alaska
|
19040604 |
Alaska |
Yukon Alaska |
Koyukuk River |
Kanuti River |
Alaska
|
19040605 |
Alaska |
Yukon Alaska |
Koyukuk River |
Allakaket River |
Alaska
|
19040606 |
Alaska |
Yukon Alaska |
Koyukuk River |
Huslia River |
Alaska
|
19040607 |
Alaska |
Yukon Alaska |
Koyukuk River |
Dulbi River |
Alaska
|
19040608 |
Alaska |
Yukon Alaska |
Koyukuk River |
Koyukuk Flats |
Alaska
|
19040609 |
Alaska |
Yukon Alaska |
Koyukuk River |
Kateel River |
Alaska
|
19040701 |
Alaska |
Yukon Alaska |
Central Yukon River |
Tozitna River |
Alaska
|
19040702 |
Alaska |
Yukon Alaska |
Central Yukon River |
Nowitna River |
Alaska
|
19040703 |
Alaska |
Yukon Alaska |
Central Yukon River |
Melozitna River |
Alaska
|
19040704 |
Alaska |
Yukon Alaska |
Central Yukon River |
Ramparts to Ruby River |
Alaska
|
19040705 |
Alaska |
Yukon Alaska |
Central Yukon River |
Galena River |
Alaska
|
19040801 |
Alaska |
Yukon Alaska |
Lower Yukon River |
Anvik River |
Alaska
|
19040802 |
Alaska |
Yukon Alaska |
Lower Yukon River |
Upper Innoko River |
Alaska
|
19040803 |
Alaska |
Yukon Alaska |
Lower Yukon River |
Lower Innoko River |
Alaska
|
19040804 |
Alaska |
Yukon Alaska |
Lower Yukon River |
Anvik to Pilot Station River |
Alaska
|
19040805 |
Alaska |
Yukon Alaska |
Lower Yukon River |
Yukon Delta |
Alaska
|
19050101 |
Alaska |
Northwest Alaska |
Norton Sound |
St. Lawrence Island |
Alaska
|
19050102 |
Alaska |
Northwest Alaska |
Norton Sound |
Unalakleet River |
Alaska
|
19050103 |
Alaska |
Northwest Alaska |
Norton Sound |
Norton Bay |
Alaska
|
19050104 |
Alaska |
Northwest Alaska |
Norton Sound |
Nome River |
Alaska
|
19050105 |
Alaska |
Northwest Alaska |
Norton Sound |
Imuruk Basin |
Alaska
|
19050201 |
Alaska |
Northwest Alaska |
Northern Seward Peninsula |
Shishmaref River |
Alaska
|
19050202 |
Alaska |
Northwest Alaska |
Northern Seward Peninsula |
Goodhope River-Spafarief Bay |
Alaska
|
19050203 |
Alaska |
Northwest Alaska |
Northern Seward Peninsula |
Buckland River |
Alaska
|
19050301 |
Alaska |
Northwest Alaska |
Kobuk River-Selawik River |
Selawik Lake |
Alaska
|
19050302 |
Alaska |
Northwest Alaska |
Kobuk River-Selawik River |
Upper Kobuk River |
Alaska
|
19050303 |
Alaska |
Northwest Alaska |
Kobuk River-Selawik River |
Middle Kobuk River |
Alaska
|
19050304 |
Alaska |
Northwest Alaska |
Kobuk River-Selawik River |
Lower Kobuk River |
Alaska
|
19050401 |
Alaska |
Northwest Alaska |
Noatak River-Lisburne Peninsula |
Upper Noatak River |
Alaska
|
19050402 |
Alaska |
Northwest Alaska |
Noatak River-Lisburne Peninsula |
Middle Noatak River |
Alaska
|
19050403 |
Alaska |
Northwest Alaska |
Noatak River-Lisburne Peninsula |
Lower Noatak River |
Alaska
|
19050404 |
Alaska |
Northwest Alaska |
Noatak River-Lisburne Peninsula |
Wulik River-Kivalina River |
Alaska
|
19050405 |
Alaska |
Northwest Alaska |
Noatak River-Lisburne Peninsula |
Lisburne Peninsula |
Alaska
|
19060101 |
Alaska |
Arctic Alaska |
Western Arctic Alaska |
Kukpowruk River |
Alaska
|
19060102 |
Alaska |
Arctic Alaska |
Western Arctic Alaska |
Kokolik River |
Alaska
|
19060103 |
Alaska |
Arctic Alaska |
Western Arctic Alaska |
Utukok River |
Alaska
|
19060201 |
Alaska |
Arctic Alaska |
Barrow |
Kuk River |
Alaska
|
19060202 |
Alaska |
Arctic Alaska |
Barrow |
Northwest Coast |
Alaska
|
19060203 |
Alaska |
Arctic Alaska |
Barrow |
Meade River |
Alaska
|
19060204 |
Alaska |
Arctic Alaska |
Barrow |
Ikpikpuk River |
Alaska
|
19060205 |
Alaska |
Arctic Alaska |
Barrow |
Harrison Bay (Beaufort Sea) |
Alaska
|
19060301 |
Alaska |
Arctic Alaska |
Colville River |
Upper Colville River |
Alaska
|
19060302 |
Alaska |
Arctic Alaska |
Colville River |
Killik River |
Alaska
|
19060303 |
Alaska |
Arctic Alaska |
Colville River |
Chandler River-Anaktuvuk River |
Alaska
|
19060304 |
Alaska |
Arctic Alaska |
Colville River |
Lower Colville River |
Alaska
|
19060401 |
Alaska |
Arctic Alaska |
Prudhoe Bay |
Kuparuk River |
Alaska
|
19060402 |
Alaska |
Arctic Alaska |
Prudhoe Bay |
Sagavanirktok River |
Alaska
|
19060403 |
Alaska |
Arctic Alaska |
Prudhoe Bay |
Mikkelson Bay |
Alaska
|
19060501 |
Alaska |
Arctic Alaska |
Eastern Arctic Alaska |
Canning River |
Alaska
|
19060502 |
Alaska |
Arctic Alaska |
Eastern Arctic Alaska |
Camden Bay |
Alaska
|
19060503 |
Alaska |
Arctic Alaska |
Eastern Arctic Alaska |
Beaufort Lagoon |
Alaska
|