| No. | Name | L (km) | D (km) | L/D |
| 1 | Missouri River | 3768 | 1913 | 1.970 |
| 2 | Mississippi River | 3544 | 2041 | 1.736 |
| 3 | Yukon River | 3190 | 1681 | 1.898 |
| 4 | Rio Grande | 2830 | 1652 | 1.713 |
| 5 | Colorado River | 2330 | 1254 | 1.858 |
| 6 | Arkansas River | 2322 | 1490 | 1.558 |
| 7 | Columbia River | 2000 | 755 | 2.649 |
| 8 | Red River | 1811 | 864 | 2.096 |
| 9 | Snake River | 1674 | 726 | 2.306 |
| 10 | Ohio River | 1575 | 877 | 1.796 |
| 11 | Colorado River of Texas | 1560 | 710 | 2.197 |
| 12 | Tennessee River | 1504 | 441 | 3.410 |
| 13 | Canadian River | 1458 | 917 | 1.590 |
| 14 | Brazos River | 1390 | 660 | 2.106 |
| 15 | Green River | 1230 | 548 | 2.245 |
| 16 | Pecos River | 1175 | 794 | 1.480 |
| 17 | White River | 1159 | 312 | 3.715 |
| 18 | James River | 1140 | 550 | 2.073 |
| 19 | Kuskokwim River | 1130 | 532 | 2.124 |
| 20 | Cimarron River | 1123 | 606 | 1.853 |
| 21 | Cumberland River | 1120 | 452 | 2.478 |
| 22 | Yellowstone River | 1091 | 638 | 1.710 |
| 23 | North Platte River | 1070 | 483 | 2.215 |
| 24 | Milk River | 1005 | 504 | 1.994 |
| 25 | Gila River | 960 | 593 | 1.619 |
| 26 | Sheyenne River | 951 | 288 | 3.302 |
| 27 | Tanana River | 940 | 540 | 1.741 |
| 28 | Smoky Hill River | 927 | 497 | 1.865 |
| 29 | Niobrara River | 914 | 540 | 1.693 |
| 30 | Little Missouri River | 900 | 382 | 2.356 |
| 31 | Sabine River | 890 | 373 | 2.386 |
| 32 | Red River of the North | 890 | 464 | 1.918 |
| 33 | Des Moines River | 845 | 458 | 1.845 |
| 34 | White River (Missouri River) | 815 | 374 | 2.197 |
| 35 | Trinity River | 815 | 401 | 2.032 |
| 36 | Wabash River | 810 | 400 | 2.025 |