Waterway |
Orientation |
Length (km) |
Mouth coordinates |
Mouth location |
Source coordinates |
Source location |
Arrow Creek |
Right |
185 |
47.714444444°N 109.828611111°W / 47.714444444; -109.828611111 |
Chouteau County, Montana |
47.400833333°N 110.605555555°W / 47.400833333; -110.605555555 |
Judith Basin County, Montana |
Auxvasse Creek |
Left |
80 |
38.68194444°N 91.82305556°W / 38.68194444; -91.82305556 |
Auxvasse Township, Callaway County, Missouri |
38.956944444°N 92.065833333°W / 38.956944444; -92.065833333 |
Kingdom City, Missouri |
Bad River |
Right |
260 |
44.3544°N 100.368°W / 44.3544; -100.368 |
Fort Pierre, South Dakota |
44.035111111°N 101.666083333°W / 44.035111111; -101.666083333 |
Haakon County |
Belt Creek |
Right |
129 |
47.598055555°N 111.048611111°W / 47.598055555; -111.048611111 |
Great Falls, Montana |
46.846222222°N 110.692611111°W / 46.846222222; -110.692611111 |
White Sulphur Springs, Montana |
Blue River |
Right |
64 |
39.1300042°N 94.470786°W / 39.1300042; -94.470786 |
Kansas City, Missouri |
38.8086194°N 94.680513°W / 38.8086194; -94.680513 |
Overland Park, Kansas |
Big Berger Creek |
Right |
40 |
38.620555555°N 91.228611111°W / 38.620555555; -91.228611111 |
New Haven, Missouri |
38.558361111°N 91.440194444°W / 38.558361111; -91.440194444 |
Boeuf Township, Gasconade County, Missouri |
Big Dry Creek |
Right |
165 |
47.51528°N 106.27809°W / 47.51528; -106.27809 |
Circle, Montana |
47.272166666°N 107.142305555°W / 47.272166666; -107.142305555 |
Jordan, Montana |
Big Muddy Creek |
Left |
307 |
48.141666666°N 104.611944444°W / 48.141666666; -104.611944444 |
Roosevelt County, Montana |
49.048527777°N 104.879416666°W / 49.048527777; -104.879416666 |
Rural Municipality of Happy Valley No. 10 |
Big Sioux River |
Left |
674 |
42.490833333°N 96.446388888°W / 42.490833333; -96.446388888 |
Sioux City, Iowa |
45.3216285°N 97.0425776°W / 45.3216285; -97.0425776 |
Roberts County, South Dakota |
Boyer River |
Left |
224 |
41.4531°N 95.9192°W / 41.4531; -95.9192 |
Pottawattamie County, Iowa |
42.598805555°N 95.276138888°W / 42.598805555; -95.276138888 |
Maple Valley Township, Buena Vista County, Iowa |
Cannonball River |
Right |
217 |
46.429166666°N 100.598333333°W / 46.429166666; -100.598333333 |
Sioux County, North Dakota |
46.47°N 103.206666666°W / 46.47; -103.206666666 |
Slope County, North Dakota |
Chariton River |
Left |
351 |
39.313°N 92.958°W / 39.313; -92.958 |
Keytesville, Missouri |
40.830555555°N 93.508888888°W / 40.830555555; -93.508888888 |
Humeston, Iowa |
Cheyenne River |
Right |
475 |
44.770833333°N 100.717777777°W / 44.770833333; -100.717777777 |
Stanley County, South Dakota |
43.426111111°N 105.058888888°W / 43.426111111; -105.058888888 |
Converse County, Wyoming |
Cow Creek |
Left |
100 |
47.788333333°N 108.935°W / 47.788333333; -108.935 |
Blaine County, Montana |
48.090472222°N 109.334305555°W / 48.090472222; -109.334305555 |
Blaine County, Montana |
Crooked River |
Left |
113 |
39.216666666°N 93.8425°W / 39.216666666; -93.8425 |
Ray County, Missouri |
39.506666666°N 94.276944444°W / 39.506666666; -94.276944444 |
Clinton County, Missouri |
Cuivre River |
Right |
56 |
38.9334°N 90.6865°W / 38.9334; -90.6865 |
St. Charles County, Missouri |
39.017222222°N 90.992777777°W / 39.017222222; -90.992777777 |
Bedford Township, Lincoln County, Missouri |
Dearborn River |
Left |
113 |
47.128055555°N 111.910277777°W / 47.128055555; -111.910277777 |
Cascade, Montana |
47.309166666°N 112.819444444°W / 47.309166666; -112.819444444 |
Lewis and Clark County, Montana |
Fishing River |
Left |
63 |
39.17528°N 94.14078°W / 39.17528; -94.14078 |
Orrick, Missouri |
39.314722222°N 94.495777777°W / 39.314722222; -94.495777777 |
Platte Township, Clay County, Missouri |
Floyd River |
Left |
180 |
42.4830497°N 96.3916957°W / 42.4830497; -96.3916957 |
Sioux City, Iowa |
43.233888888°N 95.620055555°W / 43.233888888; -95.620055555 |
Sanborn, Iowa |
Gallatin River |
Left |
193 |
45.9389°N 111.493°W / 45.9389; -111.493 |
Gallatin County, Montana |
44.85739°N 110.8831°W / 44.85739; -110.8831 |
Park County, Montana |
Gasconade River |
Right |
450 |
38.674444444°N 91.548611111°W / 38.674444444; -91.548611111 |
Gasconade, Missouri |
37.198666666°N 92.718361111°W / 37.198666666; -92.718361111 |
Seymour, Missouri |
Grand River |
Left |
760 |
39.384°N 93.108°W / 39.384; -93.108 |
Brunswick, Missouri |
41.024611111°N 94.267694444°W / 41.024611111; -94.267694444 |
Union County, Iowa |
Grand River |
Right |
303 |
45.575555555°N 100.467222222°W / 45.575555555; -100.467222222 |
Mobridge, South Dakota |
45.753666666°N 102.204527777°W / 45.753666666; -102.204527777 |
Perkins County, South Dakota |
Heart River |
Right |
475 |
46.7675°N 100.842°W / 46.7675; -100.842 |
Bismarck, North Dakota |
46.940194444°N 103.315527777°W / 46.940194444; -103.315527777 |
Belfield, North Dakota |
James River |
Right |
1,143 |
42.8714°N 97.2906°W / 42.8714; -97.2906 |
Yankton, South Dakota |
46.940194444°N 103.315527777°W / 46.940194444; -103.315527777 |
Belfield, North Dakota |
Jefferson River |
Left |
134 |
45.9275°N 111.508056°W / 45.9275; -111.508056 |
Three Forks, Montana |
45.561722222°N 112.337472222°W / 45.561722222; -112.337472222 |
Twin Bridges, Montana |
Judith River |
Right |
220 |
47.735°N 109.646111111°W / 47.735; -109.646111111 |
Fergus County, Montana |
46.849027777°N 110.269444444°W / 46.849027777; -110.269444444 |
Judith Basin County, Montana |
Kansas River |
Right |
238 |
39.115278°N 94.610556°W / 39.115278; -94.610556 |
Kansas City, Kansas |
39.06°N 96.801389°W / 39.06; -96.801389 |
Junction City, Kansas |
Knife River |
Right |
193 |
47.321388888°N 101.368888888°W / 47.321388888; -101.368888888 |
Mercer County, North Dakota |
47.184027777°N 103.211083333°W / 47.184027777; -103.211083333 |
North Billings, North Dakota |
Lamine River |
Right |
100 |
38.97975°N 92.8513°W / 38.97975; -92.8513 |
Boonville, Missouri |
38.668166666°N 92.95475°W / 38.668166666; -92.95475 |
Richland Township, Dickinson County, Iowa |
Little Blue River |
Right |
73 |
39.207777777°N 94.218555555°W / 39.207777777; -94.218555555 |
Sibley, Missouri |
38.835611111°N 94.535055555°W / 38.835611111; -94.535055555 |
Belton, Missouri |
Little Missouri River |
Right |
901 |
47.578138888°N 102.723083333°W / 47.578138888; -102.723083333 |
Dunn County, North Dakota |
44.5403°N 104.9991°W / 44.5403; -104.9991 |
Crook County, Wyoming |
Little Muddy River |
Left |
154 |
48.1353°N 103.592°W / 48.1353; -103.592 |
Williams County, North Dakota |
48.533361111°N 103.169916666°W / 48.533361111; -103.169916666 |
Williams County |
Little Sioux River |
Left |
415 |
41.803°N 96.066°W / 41.803; -96.066 |
Little Sioux Township, Harrison County, Iowa |
43.659833333°N 95.305333333°W / 43.659833333; -95.305333333 |
Rost Township, Jackson County, Minnesota |
Loutre River |
Left |
92 |
38.71199°N 91.41738°W / 38.71199; -91.41738 |
Hermann, Missouri |
39.085611111°N 91.799138888°W / 39.085611111; -91.799138888 |
Loutre Township, Montgomery County, Missouri |
Madison River |
Right |
295 |
45.9275°N 111.508055555°W / 45.9275; -111.508055555 |
Three Forks, Montana |
44.642155555°N 110.865488888°W / 44.642155555; -110.865488888 |
Park County, Wyoming |
Marias River |
Right |
338 |
47.929972222°N 110.490611111°W / 47.929972222; -110.490611111 |
Chouteau County, Montana |
48.486666666°N 112.228055555°W / 48.486666666; -112.228055555 |
Glacier County, Montana |
Milk River |
Left |
1,173 |
48.056111111°N 106.318888888°W / 48.056111111; -106.318888888 |
Valley County, Montana |
48.8555376°N 113.0195347°W / 48.8555376; -113.0195347 |
Glacier County, Montana |
Moreau River |
Right |
320 |
45.355277777°N 100.375277777°W / 45.355277777; -100.375277777 |
Dewey County, South Dakota |
45.144388888°N 102.839055555°W / 45.144388888; -102.839055555 |
Perkins County, South Dakota |
Mosquito Creek |
Left |
97 |
41.176°N 95.8402°W / 41.176; -95.8402 |
Council Bluffs, Iowa |
41.798666666°N 95.380916666°W / 41.798666666; -95.380916666 |
Union Township, Davis County, Iowa |
Musselshell River |
Right |
470 |
47.374722°N 107.943056°W / 47.374722; -107.943056 |
Winnett, Montana |
46.479722°N 110.2725°W / 46.479722; -110.2725 |
Wheatland County, Montana |
Niobrara River |
Right |
915 |
42.7717°N 98.0461°W / 42.7717; -98.0461 |
Niobrara, Nebraska |
42.8208°N 104.6472°W / 42.8208; -104.6472 |
Niobrara County, Wyoming |
Nishnabotna River |
Left |
26 |
40.4825°N 95.695222222°W / 40.4825; -95.695222222 |
Watson, Missouri |
40.6525°N 95.623611111°W / 40.6525; -95.623611111 |
Hamburg, Iowa |
Nodaway River |
Left |
106 |
39.902°N 94.966°W / 39.902; -94.966 |
Andrew County, Missouri |
40.635°N 95.019166666°W / 40.635; -95.019166666 |
Shambaugh, Iowa |
Osage River |
Right |
444 |
38.596944444°N 91.945277777°W / 38.596944444; -91.945277777 |
Callaway County, Missouri |
38.0275321°N 94.2441147°W / 38.0275321; -94.2441147 |
Schell City, Missouri |
Peace Creek |
Right |
80 |
38.174456°N 98.229508°W / 38.174456; -98.229508 |
Rice County, Kansas |
37.966403°N 98.64675°W / 37.966403; -98.64675 |
Stafford County, Kansas |
Platte River |
Right |
499 |
41.0523°N 95.8807°W / 41.0523; -95.8807 |
Plattsmouth, Nebraska |
41.1139°N 100.6758°W / 41.1139; -100.6758 |
North Platte, Nebraska |
Platte River |
Left |
275 |
39.2642°N 94.8375°W / 39.2642; -94.8375 |
Farley, Missouri |
41.156305555°N 94.383861111°W / 41.156305555; -94.383861111 |
Union County, Iowa |
Poplar River |
Left |
269 |
48.084166666°N 105.185555555°W / 48.084166666; -105.185555555 |
Poplar, Montana |
49.253611111°N 106.392222222°W / 49.253611111; -106.392222222 |
Rural Municipality of Old Post No. 43 |
Redwater River |
Right |
177 |
48.061388888°N 105.210555555°W / 48.061388888; -105.210555555 |
Poplar, Montana |
47.060277777°N 105.881388888°W / 47.060277777; -105.881388888 |
Prairie County, Montana |
Sixteen Mile Creek |
Left |
111 |
46.105555555°N 111.397777777°W / 46.105555555; -111.397777777 |
Broadwater County, Montana |
46.258138888°N 110.544888888°W / 46.258138888; -110.544888888 |
Meagher County, Montana |
Smith River |
Right |
200 |
47.413611111°N 111.478611111°W / 47.413611111; -111.478611111 |
Cascade County, Montana |
46.528638888°N 110.977861111°W / 46.528638888; -110.977861111 |
Meagher County, Montana |
Soldier River |
Left |
108 |
41.7375°N 96.0978°W / 41.7375; -96.0978 |
Mondamin, Iowa |
42.269694444°N 95.329694444°W / 42.269694444; -95.329694444 |
Hayes Township, Crawford County, Iowa |
Sun River |
Left |
209 |
47.495°N 111.312°W / 47.495; -111.312 |
Great Falls, Montana |
47.629722222°N 112.856944444°W / 47.629722222; -112.856944444 |
Lewis and Clark County, Montana |
Tarkio River |
Left |
130 |
40.16278°N 95.43859°W / 40.16278; -95.43859 |
Holt County, Missouri |
41.193877777°N 95.062488888°W / 41.193877777; -95.062488888 |
Cass County, Iowa |
rivière Vermillion |
Left |
154 |
42.732931°N 96.890567°W / 42.732931; -96.890567 |
Vermillion, South Dakota |
43.393456°N 97.068215°W / 43.393456; -97.068215 |
Turner County |
White River |
Right |
933 |
43.700111111°N 99.435694444°W / 43.700111111; -99.435694444 |
Chamberlain, South Dakota |
42.6861°N 103.8372°W / 42.6861; -103.8372 |
Harrison, Nebraska |
Wolf River |
Right |
73 |
39.8986°N 95.1917°W / 39.8986; -95.1917 |
Doniphan County, Kansas |
39.793888888°N 95.641111111°W / 39.793888888; -95.641111111 |
Powhattan, Kansas |
Yellowstone River |
Right |
1,114 |
47.978333333°N 103.982222222°W / 47.978333333; -103.982222222 |
Williams County, North Dakota |
43.988333333°N 109.929166666°W / 43.988333333; -109.929166666 |
Park County, Wyoming |