| Length (mi) | River | % Correct |
|---|---|---|
| 2,202 | Mississippi River | 99%
|
| 2,341 | Missouri River | 96%
|
| 1,450 | Colorado River | 91%
|
| 970 | Colorado River of Texas | 91%
|
| 979 | Ohio River | 88%
|
| 1,759 | Rio Grande | 85%
|
| 1,243 | Columbia River | 72%
|
| 1,443 | Arkansas River | 71%
|
| 1,125 | Red River | 69%
|
| 1,040 | Snake River | 69%
|
| 935 | Tennessee River | 58%
|
| 1,979 | Yukon River | 54%
|
| 760 | Green River | 27%
|
| 860 | Brazos River | 22%
|
| 730 | Pecos River | 20%
|
| 710 | James River | 16%
|
| 720 | White River | 15%
|
| 906 | Canadian River | 13%
|
| 698 | Cimarron River | 5%
|
| 702 | Kuskokwim River | 4%
|