<Table> Longest main - stem rivers of the United States <Tr> <Th> #</Th> <Th> Name </Th> <Th> Mouth </Th> <Th> Length </Th> <Th> Source coordinates </Th> <Th> Mouth coordinates </Th> <Th> Watershed area </Th> <Th> Discharge </Th> <Th> States, provinces, and image </Th> </Tr> <Tr> <Th> </Th> <Td> Missouri River </Td> <Td> Mississippi River </Td> <Td> 7003234100000000000 ♠ 2,341 mi 3,768 km </Td> <Td> 45 ° 55 ′ 39" N 111 ° 30 ′ 29" W ﻿ / ﻿ 45.92750 ° N 111.50806 ° W ﻿ / 45.92750; - 111.50806 ﻿ (Missouri River (source)) </Td> <Td> 38 ° 48 ′ 49" N 90 ° 07 ′ 11" W ﻿ / ﻿ 38.81361 ° N 90.11972 ° W ﻿ / 38.81361; - 90.11972 ﻿ (Missouri River (mouth)) </Td> <Td> 7005529353000000000 ♠ 529,353 mi 1,371,017 km </Td> <Td> 7004691000000000000 ♠ 69,100 ft / s 1,956 m / s </Td> <Td> Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, Missouri </Td> </Tr> <Tr> <Th> </Th> <Td> Mississippi River </Td> <Td> Gulf of Mexico </Td> <Td> 7003220200000000000 ♠ 2,202 mi 3,544 km </Td> <Td> 47 ° 14 ′ 22" N 95 ° 12 ′ 29" W ﻿ / ﻿ 47.23944 ° N 95.20806 ° W ﻿ / 47.23944; - 95.20806 ﻿ (Mississippi River (source)) </Td> <Td> 29 ° 09 ′ 04" N 89 ° 15 ′ 12" W ﻿ / ﻿ 29.15111 ° N 89.25333 ° W ﻿ / 29.15111; - 89.25333 ﻿ (Mississippi River (mouth)) </Td> <Td> 7006126000000000000 ♠ 1,260,000 mi 3,270,000 km </Td> <Td> 7005650000000000000 ♠ 650,000 ft / s 18,400 m / s </Td> <Td> Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana </Td> </Tr> <Tr> <Th> </Th> <Td> Yukon River </Td> <Td> Bering Sea </Td> <Td> 7003197900000000000 ♠ 1,979 mi 3,185 km </Td> <Td> 59 ° 35 ′ 00" N 133 ° 47 ′ 00" W ﻿ / ﻿ 59.58333 ° N 133.78333 ° W ﻿ / 59.58333; - 133.78333 ﻿ (Yukon River (source)) </Td> <Td> 62 ° 35 ′ 55" N 164 ° 48 ′ 00" W ﻿ / ﻿ 62.59861 ° N 164.80000 ° W ﻿ / 62.59861; - 164.80000 ﻿ (Yukon River (mouth)) </Td> <Td> 7005324000000000000 ♠ 324,000 mi 839,200 km </Td> <Td> 7005224000000000000 ♠ 224,000 ft / s 6,340 m / s </Td> <Td> British Columbia, Yukon Territory, Alaska </Td> </Tr> <Tr> <Th> </Th> <Td> Rio Grande </Td> <Td> Gulf of Mexico </Td> <Td> 7003175900000000000 ♠ 1,759 mi 2,830 km </Td> <Td> 37 ° 47 ′ 52" N 107 ° 32 ′ 18" W ﻿ / ﻿ 37.79778 ° N 107.53833 ° W ﻿ / 37.79778; - 107.53833 ﻿ (Rio Grande (source)) </Td> <Td> 25 ° 57 ′ 22" N 97 ° 08 ′ 43" W ﻿ / ﻿ 25.95611 ° N 97.14528 ° W ﻿ / 25.95611; - 97.14528 ﻿ (Rio Grande (mouth)) </Td> <Td> 7005340000000000000 ♠ 340,000 mi 870,000 km </Td> <Td> 7003130000000000000 ♠ 1,300 ft / s 37 m / s </Td> <Td> Colorado, New Mexico, Texas, Chihuahua, Coahuila, Nuevo León, Tamaulipas </Td> </Tr> <Tr> <Th> 5 </Th> <Td> Colorado River </Td> <Td> Gulf of California </Td> <Td> 7003145000000000000 ♠ 1,450 mi 2,330 km </Td> <Td> 40 ° 28 ′ 20" N 105 ° 49 ′ 34" W ﻿ / ﻿ 40.47222 ° N 105.82611 ° W ﻿ / 40.47222; - 105.82611 ﻿ (Colorado River (source)) </Td> <Td> 31 ° 48 ′ 57" N 114 ° 48 ′ 22" W ﻿ / ﻿ 31.81583 ° N 114.80611 ° W ﻿ / 31.81583; - 114.80611 ﻿ (Colorado River (mouth)) </Td> <Td> 7005248000000000000 ♠ 248,000 mi 642,000 km </Td> <Td> 7003140000000000000 ♠ 1,400 ft / s 40 m / s </Td> <Td> Colorado, Utah, Arizona, Nevada, California, Sonora, Baja California </Td> </Tr> <Tr> <Th> 6 </Th> <Td> Arkansas River </Td> <Td> Mississippi River </Td> <Td> 7003144300000000000 ♠ 1,443 mi 2,322 km </Td> <Td> 39 ° 15 ′ 30" N 106 ° 20 ′ 38" W ﻿ / ﻿ 39.25833 ° N 106.34389 ° W ﻿ / 39.25833; - 106.34389 ﻿ (Arkansas River (source)) </Td> <Td> 33 ° 46 ′ 30" N 91 ° 04 ′ 15" W ﻿ / ﻿ 33.77500 ° N 91.07083 ° W ﻿ / 33.77500; - 91.07083 ﻿ (Arkansas River (mouth)) </Td> <Td> 7005160200000000000 ♠ 160,200 mi 414,910 km </Td> <Td> 7004355000000000000 ♠ 35,500 ft / s 1,004 m / s </Td> <Td> Colorado, Kansas, Oklahoma, Arkansas </Td> </Tr> <Tr> <Th> 7 </Th> <Td> Columbia River </Td> <Td> Pacific Ocean </Td> <Td> 7003124300000000000 ♠ 1,243 mi 2,000 km </Td> <Td> 50 ° 13 ′ 00" N 115 ° 51 ′ 00" W ﻿ / ﻿ 50.21667 ° N 115.85000 ° W ﻿ / 50.21667; - 115.85000 ﻿ (Columbia River (source)) </Td> <Td> 46 ° 14 ′ 39" N 124 ° 03 ′ 29" W ﻿ / ﻿ 46.24417 ° N 124.05806 ° W ﻿ / 46.24417; - 124.05806 ﻿ (Columbia River (mouth)) </Td> <Td> 7005279548000000000 ♠ 279,548 mi 724,024 km </Td> <Td> 7005273000000000000 ♠ 273,000 ft / s 7,730 m / s </Td> <Td> British Columbia, Washington, Oregon </Td> </Tr> <Tr> <Th> 8 </Th> <Td> Red River </Td> <Td> Atchafalaya and Mississippi rivers </Td> <Td> 7003112500000000000 ♠ 1,125 mi 1,811 km </Td> <Td> 34 ° 34 ′ 35" N 99 ° 57 ′ 54" W ﻿ / ﻿ 34.57639 ° N 99.96500 ° W ﻿ / 34.57639; - 99.96500 ﻿ (Red River (source)) </Td> <Td> 31 ° 01 ′ 10" N 91 ° 44 ′ 52" W ﻿ / ﻿ 31.01944 ° N 91.74778 ° W ﻿ / 31.01944; - 91.74778 ﻿ (Red River (mouth)) </Td> <Td> 7004655900000000000 ♠ 65,590 mi 169,890 km </Td> <Td> 7004301000000000000 ♠ 30,100 ft / s 852 m / s </Td> <Td> Oklahoma, Texas, Arkansas, Louisiana </Td> </Tr> <Tr> <Th> 9 </Th> <Td> Snake River </Td> <Td> Columbia River </Td> <Td> 7003104000000000000 ♠ 1,040 mi 1,674 km </Td> <Td> 44 ° 07 ′ 49" N 110 ° 13 ′ 10" W ﻿ / ﻿ 44.13028 ° N 110.21944 ° W ﻿ / 44.13028; - 110.21944 ﻿ (Snake River (source)) </Td> <Td> 46 ° 11 ′ 10" N 119 ° 01 ′ 43" W ﻿ / ﻿ 46.18611 ° N 119.02861 ° W ﻿ / 46.18611; - 119.02861 ﻿ (Snake River (mouth)) </Td> <Td> 7005108000000000000 ♠ 108,000 mi 281,000 km </Td> <Td> 7004553000000000000 ♠ 55,300 ft / s 1,565 m / s </Td> <Td> Wyoming, Idaho, Oregon, Washington </Td> </Tr> <Tr> <Th> 10 </Th> <Td> Ohio River </Td> <Td> Mississippi River </Td> <Td> 7002979000000000000 ♠ 979 mi 1,575 km </Td> <Td> 40 ° 26 ′ 34" N 80 ° 01 ′ 02" W ﻿ / ﻿ 40.44278 ° N 80.01722 ° W ﻿ / 40.44278; - 80.01722 ﻿ (Ohio River (source)) </Td> <Td> 36 ° 59 ′ 12" N 89 ° 07 ′ 50" W ﻿ / ﻿ 36.98667 ° N 89.13056 ° W ﻿ / 36.98667; - 89.13056 ﻿ (Ohio River (mouth)) </Td> <Td> 7005204000000000000 ♠ 204,000 mi 529,000 km </Td> <Td> 7005308400000000000 ♠ 308,400 ft / s 8,733 m / s </Td> <Td> Pennsylvania, Ohio, West Virginia, Indiana, Illinois, Kentucky </Td> </Tr> <Tr> <Th> 11 </Th> <Td> Colorado River of Texas </Td> <Td> Gulf of Mexico </Td> <Td> 7002970000000000000 ♠ 970 mi 1,560 km </Td> <Td> 32 ° 40 ′ 47" N 101 ° 43 ′ 51" W ﻿ / ﻿ 32.67972 ° N 101.73083 ° W ﻿ / 32.67972; - 101.73083 ﻿ (Colorado River of Texas (source))) </Td> <Td> 28 ° 35 ′ 41" N 95 ° 58 ′ 59" W ﻿ / ﻿ 28.59472 ° N 95.98306 ° W ﻿ / 28.59472; - 95.98306 ﻿ (Colorado River of Texas (mouth)) </Td> <Td> 7004399000000000000 ♠ 39,900 mi 103,341 km </Td> <Td> 7003260000000000000 ♠ 2,600 ft / s 75 m / s </Td> <Td> Texas </Td> </Tr> <Tr> <Th> 12 </Th> <Td> Tennessee River </Td> <Td> Ohio River </Td> <Td> 7002935000000000000 ♠ 935 mi 1,504 km </Td> <Td> 35 ° 57 ′ 33" N 83 ° 51 ′ 01" W ﻿ / ﻿ 35.95917 ° N 83.85028 ° W ﻿ / 35.95917; - 83.85028 ﻿ (Tennessee River (source)) </Td> <Td> 37 ° 04 ′ 02" N 88 ° 33 ′ 53" W ﻿ / ﻿ 37.06722 ° N 88.56472 ° W ﻿ / 37.06722; - 88.56472 ﻿ (Tennessee River (mouth)) </Td> <Td> 7004408800000000000 ♠ 40,880 mi 105,870 km </Td> <Td> 7004710000000000000 ♠ 71,000 ft / s 2,000 m / s </Td> <Td> Tennessee, Alabama, Kentucky </Td> </Tr> <Tr> <Th> 13 </Th> <Td> Canadian River </Td> <Td> Arkansas River </Td> <Td> 7002906000000000000 ♠ 906 mi 1,458 km </Td> <Td> 37 ° 01 ′ 11" N 105 ° 04 ′ 33" W ﻿ / ﻿ 37.01972 ° N 105.07583 ° W ﻿ / 37.01972; - 105.07583 ﻿ (Canadian River (source)) </Td> <Td> 35 ° 27 ′ 12" N 95 ° 01 ′ 58" W ﻿ / ﻿ 35.45333 ° N 95.03278 ° W ﻿ / 35.45333; - 95.03278 ﻿ (Canadian River (mouth)) </Td> <Td> 7004471300000000000 ♠ 47,130 mi 122,070 km </Td> <Td> 7003610000000000000 ♠ 6,100 ft / s 174 m / s </Td> <Td> Colorado, New Mexico, Texas, Oklahoma </Td> </Tr> <Tr> <Th> 14 </Th> <Td> Brazos River </Td> <Td> Gulf of Mexico </Td> <Td> 7002860000000000000 ♠ 860 mi 1,390 km </Td> <Td> 33 ° 16 ′ 07" N 100 ° 00 ′ 37" W ﻿ / ﻿ 33.26861 ° N 100.01028 ° W ﻿ / 33.26861; - 100.01028 ﻿ (Brazos River (source)) </Td> <Td> 28 ° 52 ′ 33" N 95 ° 22 ′ 42" W ﻿ / ﻿ 28.87583 ° N 95.37833 ° W ﻿ / 28.87583; - 95.37833 ﻿ (Brazos River (mouth)) </Td> <Td> 7004446200000000000 ♠ 44,620 mi 115,566 km </Td> <Td> 7003880000000000000 ♠ 8,800 ft / s 249 m / s </Td> <Td> Texas </Td> </Tr> <Tr> <Th> 15 </Th> <Td> Green River </Td> <Td> Colorado River </Td> <Td> 7002760000000000000 ♠ 760 mi 1,230 km </Td> <Td> 43 ° 09 ′ 13" N 109 ° 40 ′ 18" W ﻿ / ﻿ 43.15361 ° N 109.67167 ° W ﻿ / 43.15361; - 109.67167 ﻿ (Green River (source)) </Td> <Td> 38 ° 11 ′ 21" N 109 ° 53 ′ 07" W ﻿ / ﻿ 38.18917 ° N 109.88528 ° W ﻿ / 38.18917; - 109.88528 ﻿ (Green River (mouth)) </Td> <Td> 7004449000000000000 ♠ 44,900 mi 116,200 km </Td> <Td> 7003610000000000000 ♠ 6,100 ft / s 172 m / s </Td> <Td> Wyoming, Colorado, Utah </Td> </Tr> <Tr> <Th> 16 </Th> <Td> Pecos River </Td> <Td> Rio Grande </Td> <Td> 7002730000000000000 ♠ 730 mi 1,175 km </Td> <Td> 35 ° 58 ′ 34" N 105 ° 33 ′ 29" W ﻿ / ﻿ 35.97611 ° N 105.55806 ° W ﻿ / 35.97611; - 105.55806 ﻿ (Pecos River (source)) </Td> <Td> 29 ° 41 ′ 59" N 101 ° 22 ′ 17" W ﻿ / ﻿ 29.69972 ° N 101.37139 ° W ﻿ / 29.69972; - 101.37139 ﻿ (Pecos River (mouth)) </Td> <Td> 7004440000000000000 ♠ 44,000 mi 113,960 km </Td> <Td> 7001710000000000000 ♠ 71 ft / s 2 m / s </Td> <Td> New Mexico, Texas </Td> </Tr> <Tr> <Th> 17 </Th> <Td> White River (Arkansas) </Td> <Td> Mississippi River </Td> <Td> 7002720000000000000 ♠ 720 mi 1,159 km </Td> <Td> 35 ° 50 ′ 20" N 93 ° 36 ′ 16" W ﻿ / ﻿ 35.83889 ° N 93.60444 ° W ﻿ / 35.83889; - 93.60444 ﻿ (White River (source)) </Td> <Td> 33 ° 57 ′ 05" N 91 ° 04 ′ 53" W ﻿ / ﻿ 33.95139 ° N 91.08139 ° W ﻿ / 33.95139; - 91.08139 ﻿ (White River (mouth)) </Td> <Td> 7004278720000000000 ♠ 27,872 mi 72,189 km </Td> <Td> 7004346000000000000 ♠ 34,600 ft / s 979 m / s </Td> <Td> Arkansas, Missouri </Td> </Tr> <Tr> <Th> 18 </Th> <Td> James River </Td> <Td> Missouri River </Td> <Td> 7002710000000000000 ♠ 710 mi 1,140 km </Td> <Td> 47 ° 28 ′ 53" N 99 ° 51 ′ 32" W ﻿ / ﻿ 47.48139 ° N 99.85889 ° W ﻿ / 47.48139; - 99.85889 ﻿ (James River (source)) </Td> <Td> 42 ° 52 ′ 17" N 97 ° 17 ′ 26" W ﻿ / ﻿ 42.87139 ° N 97.29056 ° W ﻿ / 42.87139; - 97.29056 ﻿ (James River (mouth)) </Td> <Td> 7004209420000000000 ♠ 20,942 mi 54,240 km </Td> <Td> 7002854000000000000 ♠ 854 ft / s 24.2 m / s </Td> <Td> North Dakota, South Dakota </Td> </Tr> <Tr> <Th> 19 </Th> <Td> Kuskokwim River </Td> <Td> Bering Sea </Td> <Td> 7002702000000000000 ♠ 702 mi 1,130 km </Td> <Td> 63 ° 05 ′ 16" N 154 ° 38 ′ 33" W ﻿ / ﻿ 63.08778 ° N 154.64250 ° W ﻿ / 63.08778; - 154.64250 ﻿ (Kuskokwim River (source)) </Td> <Td> 60 ° 04 ′ 59" N 162 ° 20 ′ 02" W ﻿ / ﻿ 60.08306 ° N 162.33389 ° W ﻿ / 60.08306; - 162.33389 ﻿ (Kuskokwim River (mouth)) </Td> <Td> 7004480000000000000 ♠ 48,000 mi 124,319 km </Td> <Td> 7004670000000000000 ♠ 67,000 ft s 1,900 m / s </Td> <Td> Alaska </Td> </Tr> <Tr> <Th> 20 </Th> <Td> Cimarron River </Td> <Td> Arkansas River </Td> <Td> 7002698000000000000 ♠ 698 mi 1,123 km </Td> <Td> 36 ° 54 ′ 24" N 102 ° 59 ′ 12" W ﻿ / ﻿ 36.90667 ° N 102.98667 ° W ﻿ / 36.90667; - 102.98667 ﻿ ("Cimarron River (source)) </Td> <Td> 36 ° 10 ′ 14" N 96 ° 16 ′ 19" W ﻿ / ﻿ 36.17056 ° N 96.27194 ° W ﻿ / 36.17056; - 96.27194 ﻿ (Cimarron River (mouth)) </Td> <Td> 7004195100000000000 ♠ 19,510 mi 50,540 km </Td> <Td> 7003150000000000000 ♠ 1,500 ft / s 42 m / s </Td> <Td> Oklahoma, Colorado, Kansas </Td> </Tr> <Tr> <Th> 21 </Th> <Td> Cumberland River </Td> <Td> Ohio River </Td> <Td> 7002696000000000000 ♠ 696 mi 1,120 km </Td> <Td> 36 ° 50 ′ 42" N 83 ° 19 ′ 26" W ﻿ / ﻿ 36.84500 ° N 83.32389 ° W ﻿ / 36.84500; - 83.32389 ﻿ (Cumberland River (source)) </Td> <Td> 37 ° 08 ′ 36" N 88 ° 24 ′ 27" W ﻿ / ﻿ 37.14333 ° N 88.40750 ° W ﻿ / 37.14333; - 88.40750 ﻿ (Cumberland River (mouth)) </Td> <Td> 7004179300000000000 ♠ 17,930 mi 46,430 km </Td> <Td> 7004410000000000000 ♠ 41,000 ft / s 862 m / s </Td> <Td> Kentucky, Tennessee </Td> </Tr> <Tr> <Th> 22 </Th> <Td> Yellowstone River </Td> <Td> Missouri River </Td> <Td> 7002678000000000000 ♠ 678 mi 1,091 km </Td> <Td> 43 ° 59 ′ 18" N 109 ° 55 ′ 45" W ﻿ / ﻿ 43.98833 ° N 109.92917 ° W ﻿ / 43.98833; - 109.92917 ﻿ (Yellowstone River (source)) </Td> <Td> 47 ° 58 ′ 42" N 103 ° 58 ′ 56" W ﻿ / ﻿ 47.97833 ° N 103.98222 ° W ﻿ / 47.97833; - 103.98222 ﻿ (Yellowstone River (mouth)) </Td> <Td> 7004704000000000000 ♠ 70,400 mi 182,336 km </Td> <Td> 7004128000000000000 ♠ 12,800 ft / s 362 m / s </Td> <Td> Wyoming, Montana, North Dakota </Td> </Tr> <Tr> <Th> 23 </Th> <Td> North Platte River </Td> <Td> Platte River </Td> <Td> 7002665000000000000 ♠ 665 mi 1,070 km </Td> <Td> 40 ° 38 ′ 23" N 106 ° 24 ′ 19" W ﻿ / ﻿ 40.63972 ° N 106.40528 ° W ﻿ / 40.63972; - 106.40528 ﻿ (North Platte River (source)) </Td> <Td> 41 ° 06 ′ 50" N 100 ° 40 ′ 33" W ﻿ / ﻿ 41.11389 ° N 100.67583 ° W ﻿ / 41.11389; - 100.67583 ﻿ (North Platte River (mouth)) </Td> <Td> 7004348850000000000 ♠ 34,885 mi 90,352 km </Td> <Td> 7002770000000000000 ♠ 770 ft / s 21.9 m / s </Td> <Td> Colorado, Wyoming, Nebraska </Td> </Tr> <Tr> <Th> 24 </Th> <Td> Milk River </Td> <Td> Missouri River </Td> <Td> 7002625000000000000 ♠ 625 mi 1,005 km </Td> <Td> 48 ° 51 ′ 20" N 113 ° 01 ′ 10" W ﻿ / ﻿ 48.85556 ° N 113.01944 ° W ﻿ / 48.85556; - 113.01944 ﻿ (Milk River (source)) </Td> <Td> 48 ° 03 ′ 26" N 106 ° 19 ′ 07" W ﻿ / ﻿ 48.05722 ° N 106.31861 ° W ﻿ / 48.05722; - 106.31861 ﻿ (Milk River (mouth)) </Td> <Td> 7004223320000000000 ♠ 22,332 mi 57,839 km </Td> <Td> 7002670000000000000 ♠ 670 ft / s 18.9 m / s </Td> <Td> Alberta, Montana </Td> </Tr> <Tr> <Th> 25 </Th> <Td> Ouachita River </Td> <Td> Black River </Td> <Td> 7002605000000000000 ♠ 605 mi 974 km </Td> <Td> 31 ° 41 ′ 56" N 94 ° 19 ′ 57" W ﻿ / ﻿ 31.69889 ° N 94.33250 ° W ﻿ / 31.69889; - 94.33250 ﻿ (Ouachita River (source)) </Td> <Td> 31 ° 37 ′ 53" N 91 ° 48 ′ 25" W ﻿ / ﻿ 31.63139 ° N 91.80694 ° W ﻿ / 31.63139; - 91.80694 ﻿ (Ouachita River (mouth)) </Td> <Td> 7004248860000000000 ♠ 24,886 mi 64,454 km </Td> <Td> 7004298000000000000 ♠ 29,800 ft / s 843 m / s </Td> <Td> Arkansas, Louisiana </Td> </Tr> <Tr> <Th> 26 </Th> <Td> Saint Lawrence River </Td> <Td> Gulf of Saint Lawrence </Td> <Td> 7002600000000000000 ♠ 600 mi 965 km </Td> <Td> 44 ° 05 ′ 55" N 76 ° 23 ′ 28" W ﻿ / ﻿ 44.09861 ° N 76.39111 ° W ﻿ / 44.09861; - 76.39111 ﻿ (St. Lawrence River (source)) </Td> <Td> 49 ° 40 ′ 00" N 64 ° 30 ′ 00" W ﻿ / ﻿ 49.66667 ° N 64.50000 ° W ﻿ / 49.66667; - 64.50000 ﻿ (Saint Lawrence River (mouth)) </Td> <Td> 7005620000000000000 ♠ 620,000 mi 1,600,000 km </Td> <Td> 7005440000000000000 ♠ 440,000 ft / s 12,600 m / s </Td> <Td> New York, Ontario, Quebec </Td> </Tr> <Tr> <Th> 27 </Th> <Td> Gila River </Td> <Td> Colorado River </Td> <Td> 7002600000000000000 ♠ 600 mi 960 km </Td> <Td> 33 ° 10 ′ 47" N 108 ° 12 ′ 22" W ﻿ / ﻿ 33.17972 ° N 108.20611 ° W ﻿ / 33.17972; - 108.20611 ﻿ (Gila River (source)) </Td> <Td> 32 ° 43 ′ 11" N 114 ° 33 ′ 19" W ﻿ / ﻿ 32.71972 ° N 114.55528 ° W ﻿ / 32.71972; - 114.55528 ﻿ (Gila River (mouth)) </Td> <Td> 7004578500000000000 ♠ 57,850 mi 149,832 km </Td> <Td> 7002210000000000000 ♠ 210 ft / s 6 m / s </Td> <Td> New Mexico, Arizona </Td> </Tr> <Tr> <Th> 28 </Th> <Td> Sheyenne River </Td> <Td> Red River of the North </Td> <Td> 7002591000000000000 ♠ 591 mi 951 km </Td> <Td> 47 ° 41 ′ 46" N 100 ° 29 ′ 52" W ﻿ / ﻿ 47.69611 ° N 100.49778 ° W ﻿ / 47.69611; - 100.49778 ﻿ (Sheyenne River (source)) </Td> <Td> 47 ° 01 ′ 25" N 96 ° 49 ′ 31" W ﻿ / ﻿ 47.02361 ° N 96.82528 ° W ﻿ / 47.02361; - 96.82528 ﻿ (Sheyenne River (mouth)) </Td> <Td> 7003880000000000000 ♠ 8,800 mi 23,000 km </Td> <Td> 7002288000000000000 ♠ 288 ft / s 8.2 m / s </Td> <Td> North Dakota </Td> </Tr> <Tr> <Th> 29 </Th> <Td> Tanana River </Td> <Td> Yukon River </Td> <Td> 7002584000000000000 ♠ 584 mi 940 km </Td> <Td> 63 ° 02 ′ 57" N 141 ° 51 ′ 52" W ﻿ / ﻿ 63.04917 ° N 141.86444 ° W ﻿ / 63.04917; - 141.86444 ﻿ (Tanana River (source)) </Td> <Td> 65 ° 09 ′ 38" N 151 ° 57 ′ 37" W ﻿ / ﻿ 65.16056 ° N 151.96028 ° W ﻿ / 65.16056; - 151.96028 ﻿ (Tanana River (mouth)) </Td> <Td> 7004440000000000000 ♠ 44,000 mi 114,000 km </Td> <Td> 7004418000000000000 ♠ 41,800 ft / s 1,185 m / s </Td> <Td> Alaska </Td> </Tr> <Tr> <Th> 30 </Th> <Td> Smoky Hill River </Td> <Td> Kansas River </Td> <Td> 7002576000000000000 ♠ 576 mi 927 km </Td> <Td> 38 ° 57 ′ 01" N 102 ° 34 ′ 49" W ﻿ / ﻿ 38.95028 ° N 102.58028 ° W ﻿ / 38.95028; - 102.58028 ﻿ (Smoky Hill River (source)) </Td> <Td> 39 ° 03 ′ 36" N 96 ° 48 ′ 04" W ﻿ / ﻿ 39.06000 ° N 96.80111 ° W ﻿ / 39.06000; - 96.80111 ﻿ (Smoky Hill (mouth)) </Td> <Td> 7004192600000000000 ♠ 19,260 mi 49,900 km </Td> <Td> 7003154200000000000 ♠ 1,542 ft / s 43.7 m / s </Td> <Td> Colorado, Kansas </Td> </Tr> <Tr> <Th> 31 </Th> <Td> Niobrara River </Td> <Td> Missouri River </Td> <Td> 7002568000000000000 ♠ 568 mi 914 km </Td> <Td> 42 ° 49 ′ 15" N 104 ° 38 ′ 50" W ﻿ / ﻿ 42.82083 ° N 104.64722 ° W ﻿ / 42.82083; - 104.64722 ﻿ (Niobrara River (source)) </Td> <Td> 42 ° 45 ′ 58" N 98 ° 02 ′ 50" W ﻿ / ﻿ 42.76611 ° N 98.04722 ° W ﻿ / 42.76611; - 98.04722 ﻿ (Niobrara River (mouth)) </Td> <Td> 7004126000000000000 ♠ 12,600 mi 32,600 km </Td> <Td> 7003170000000000000 ♠ 1,700 ft / s 49 m / s </Td> <Td> Wyoming, Nebraska </Td> </Tr> <Tr> <Th> 32 </Th> <Td> Little Missouri River </Td> <Td> Missouri River </Td> <Td> 7002560000000000000 ♠ 560 mi 900 km </Td> <Td> 44 ° 32 ′ 25" N 104 ° 59 ′ 57" W ﻿ / ﻿ 44.54028 ° N 104.99917 ° W ﻿ / 44.54028; - 104.99917 ﻿ ("Little Missouri River (source)) </Td> <Td> 47 ° 36 ′ 38" N 102 ° 52 ′ 24" W ﻿ / ﻿ 47.61056 ° N 102.87333 ° W ﻿ / 47.61056; - 102.87333 ﻿ (Little Missouri River (mouth)) </Td> <Td> 7003831000000000000 ♠ 8,310 mi 21,500 km </Td> <Td> 7002450000000000000 ♠ 450 ft / s 13 m / s </Td> <Td> Wyoming, Montana, South Dakota, North Dakota </Td> </Tr> <Tr> <Th> 33 </Th> <Td> Sabine River </Td> <Td> Gulf of Mexico </Td> <Td> 7002553000000000000 ♠ 553 mi 890 km </Td> <Td> 32 ° 48 ′ 29" N 95 ° 55 ′ 14" W ﻿ / ﻿ 32.80806 ° N 95.92056 ° W ﻿ / 32.80806; - 95.92056 ﻿ (Sabine River (source)) </Td> <Td> 29 ° 59 ′ 08" N 93 ° 47 ′ 26" W ﻿ / ﻿ 29.98556 ° N 93.79056 ° W ﻿ / 29.98556; - 93.79056 ﻿ (Sabine River (mouth)) </Td> <Td> 7003975600000000000 ♠ 9,756 mi 25,268 km </Td> <Td> 7003840000000000000 ♠ 8,400 ft / s 238 m / s </Td> <Td> Texas, Louisiana </Td> </Tr> <Tr> <Th> 34 </Th> <Td> Red River of the North </Td> <Td> Lake Winnipeg </Td> <Td> 7002550000000000000 ♠ 550 mi 890 km </Td> <Td> 46 ° 15 ′ 52" N 96 ° 35 ′ 55" W ﻿ / ﻿ 46.26444 ° N 96.59861 ° W ﻿ / 46.26444; - 96.59861 ﻿ (Red River of the North (source)) </Td> <Td> 50 ° 23 ′ 47" N 96 ° 48 ′ 39" W ﻿ / ﻿ 50.39639 ° N 96.81083 ° W ﻿ / 50.39639; - 96.81083 ﻿ (Red River (mouth)) </Td> <Td> 7005111000000000000 ♠ 111,000 mi 287,500 km </Td> <Td> 7003830000000000000 ♠ 8,300 ft / s 236 m / s </Td> <Td> North Dakota, Minnesota, Manitoba </Td> </Tr> <Tr> <Th> 35 </Th> <Td> Des Moines River </Td> <Td> Mississippi River </Td> <Td> 7002525000000000000 ♠ 525 mi 845 km </Td> <Td> 44 ° 05 ′ 02" N 95 ° 41 ′ 17" W ﻿ / ﻿ 44.08389 ° N 95.68806 ° W ﻿ / 44.08389; - 95.68806 ﻿ (Des Moines (source)) </Td> <Td> 41 ° 22 ′ 52" N 91 ° 25 ′ 21" W ﻿ / ﻿ 41.38111 ° N 91.42250 ° W ﻿ / 41.38111; - 91.42250 ﻿ (Des Moines River (mouth)) </Td> <Td> 7004120180000000000 ♠ 12,018 mi 31,127 km </Td> <Td> 7003640000000000000 ♠ 6,400 ft / s 182 m / s </Td> <Td> Minnesota, Missouri, Iowa </Td> </Tr> <Tr> <Th> 36 </Th> <Td> White River (Missouri River) </Td> <Td> Missouri River </Td> <Td> 7002506000000000000 ♠ 506 mi 815 km </Td> <Td> 42 ° 41 ′ 10" N 103 ° 50 ′ 14" W ﻿ / ﻿ 42.68611 ° N 103.83722 ° W ﻿ / 42.68611; - 103.83722 ﻿ (White River (source)) </Td> <Td> 43 ° 42 ′ 50" N 99 ° 28 ′ 01" W ﻿ / ﻿ 43.71389 ° N 99.46694 ° W ﻿ / 43.71389; - 99.46694 ﻿ (White River (mouth)) </Td> <Td> 7004102000000000000 ♠ 10,200 mi 26,418 km </Td> <Td> 7002570000000000000 ♠ 570 ft / s 16 m / s </Td> <Td> Nebraska, South Dakota </Td> </Tr> <Tr> <Th> 37 </Th> <Td> Trinity River </Td> <Td> Galveston Bay </Td> <Td> 7002506000000000000 ♠ 506 mi 815 km </Td> <Td> 32 ° 47 ′ 54" N 96 ° 53 ′ 52" W ﻿ / ﻿ 32.79833 ° N 96.89778 ° W ﻿ / 32.79833; - 96.89778 ﻿ (Trinity River (source)) </Td> <Td> 29 ° 44 ′ 35" N 94 ° 42 ′ 12" W ﻿ / ﻿ 29.74306 ° N 94.70333 ° W ﻿ / 29.74306; - 94.70333 ﻿ (Trinity River (mouth)) </Td> <Td> 7004179700000000000 ♠ 17,970 mi 46,540 km </Td> <Td> 7003780000000000000 ♠ 7,800 ft / s 222 m / s </Td> <Td> Texas </Td> </Tr> <Tr> <Th> 38 </Th> <Td> Wabash River </Td> <Td> Ohio River </Td> <Td> 7002503000000000000 ♠ 503 mi 810 km </Td> <Td> 40 ° 21 ′ 07" N 84 ° 45 ′ 57" W ﻿ / ﻿ 40.35194 ° N 84.76583 ° W ﻿ / 40.35194; - 84.76583 ﻿ (Wabash River (source)) </Td> <Td> 37 ° 47 ′ 53" N 88 ° 01 ′ 38" W ﻿ / ﻿ 37.79806 ° N 88.02722 ° W ﻿ / 37.79806; - 88.02722 ﻿ (Wabash River (mouth)) </Td> <Td> 7004329500000000000 ♠ 32,950 mi 85,340 km </ ref> </Td> <Td> 7003100100000000000 ♠ 1,001 ft / s 28 m / s </Td> <Td> Ohio, Indiana, Illinois </Td> </Tr> </Table> <Tr> <Th> #</Th> <Th> Name </Th> <Th> Mouth </Th> <Th> Length </Th> <Th> Source coordinates </Th> <Th> Mouth coordinates </Th> <Th> Watershed area </Th> <Th> Discharge </Th> <Th> States, provinces, and image </Th> </Tr> <Tr> <Th> </Th> <Td> Missouri River </Td> <Td> Mississippi River </Td> <Td> 7003234100000000000 ♠ 2,341 mi 3,768 km </Td> <Td> 45 ° 55 ′ 39" N 111 ° 30 ′ 29" W ﻿ / ﻿ 45.92750 ° N 111.50806 ° W ﻿ / 45.92750; - 111.50806 ﻿ (Missouri River (source)) </Td> <Td> 38 ° 48 ′ 49" N 90 ° 07 ′ 11" W ﻿ / ﻿ 38.81361 ° N 90.11972 ° W ﻿ / 38.81361; - 90.11972 ﻿ (Missouri River (mouth)) </Td> <Td> 7005529353000000000 ♠ 529,353 mi 1,371,017 km </Td> <Td> 7004691000000000000 ♠ 69,100 ft / s 1,956 m / s </Td> <Td> Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, Missouri </Td> </Tr> <Tr> <Th> </Th> <Td> Mississippi River </Td> <Td> Gulf of Mexico </Td> <Td> 7003220200000000000 ♠ 2,202 mi 3,544 km </Td> <Td> 47 ° 14 ′ 22" N 95 ° 12 ′ 29" W ﻿ / ﻿ 47.23944 ° N 95.20806 ° W ﻿ / 47.23944; - 95.20806 ﻿ (Mississippi River (source)) </Td> <Td> 29 ° 09 ′ 04" N 89 ° 15 ′ 12" W ﻿ / ﻿ 29.15111 ° N 89.25333 ° W ﻿ / 29.15111; - 89.25333 ﻿ (Mississippi River (mouth)) </Td> <Td> 7006126000000000000 ♠ 1,260,000 mi 3,270,000 km </Td> <Td> 7005650000000000000 ♠ 650,000 ft / s 18,400 m / s </Td> <Td> Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana </Td> </Tr>

What is the largest river system in the united states