List of rivers of the United States by discharge

This is a list of rivers in the continental United States by average discharge (streamflow) in cubic feet per second. All rivers with average discharge more than 15,000 cubic feet per second are listed. Estimates are approximate, because data are variable with time period measured and also because many rivers lack a gauging station near their point of outflow.

NoRiverLengthAverage dischargeOutflowmileskm1Mississippi River Gulf of Mexico2Ohio RiverMississippi River3St. Lawrence River (275,000 at U.S.-Canada boundary) ( at U.S.-Canada boundary)Gulf of Saint Lawrence4Columbia RiverPacific Ocean5Yukon River Bering Sea6Atchafalaya River Gulf of Mexico7Niagara River Lake Ontario8Detroit River Lake Erie 9St. Clair River Lake St. Clair10Missouri River Mississippi River11St. Marys River Lake Huron-Lake Michigan12Tennessee River Ohio River13Mobile River Gulf of Mexico14Kuskokwim River Bering Sea 15Red River Atchafalaya River16Copper River Gulf of Alaska17Snake River Columbia River18Stikine River Pacific Ocean19Susitna River Gulf of Alaska20Arkansas River Mississippi River21Tanana River Yukon River22 Saint John River Bay of Fundy23Susquehanna River Chesapeake Bay24Willamette River Columbia River25Wabash River Ohio River26Alabama River Mobile River27Nushagak River ?Bering Sea28Alsek River Gulf of Alaska29Cumberland River ?Ohio River30Black River-Ouachita River Red River31White River Mississippi River32Pend Oreille River Columbia River33Tombigbee River Mobile River34Koyukuk River ?Yukon River35Illinois River Mississippi River36Sacramento River Pacific Ocean37Porcupine River Yukon River38Colorado River Gulf of California39Clark Fork River , file .Pend Oreille River40Hudson River Atlantic Ocean41Yentna River ?Susitna River42Chitina River ?Copper River43Allegheny River Ohio River44Apalachicola River Gulf of Mexico45Connecticut River Atlantic Ocean46Kvichak River Bering Sea47Klamath River Pacific Ocean48Santee River (approx.)Atlantic Ocean49Skagit River Pacific Ocean50Kootenai (Kootenay) River (approx. 16,000? at U.S.-Canada boundary) (approx. ? at U.S.-Canada boundary)Columbia River51Coosa River Alabama River52Kanawha River United States Geological Survey; USGS 03193000 KANAWHA RIVER AT KANAWHA FALLS, WV.Ohio River53Clearwater River Snake River54Kobuk River Bering Sea55St. Johns River?Atlantic Ocean56Pee Dee River ?Atlantic Ocean

See also List of rivers of the United States List of longest rivers of the United States (by main stem) List of longest rivers in the United States by state List of rivers by discharge

References