| States | Length | River | % Correct |
|---|---|---|---|
| Minnesota, Wisconsin, Iowa, Illinois, Missouri, Kentucky, Tennessee, Arkansas, Mississippi, Louisiana | 2,202 | Mississippi | 100%
|
| Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, Missouri | 2,341 | Missouri | 95%
|
| Pennsylvania, Ohio, West Virginia, Indiana, Illinois, Kentucky | 979 | Ohio | 88%
|
| Colorado, Kansas, Oklahoma, Arkansas | 1,443 | Arkansas | 82%
|
| Texas | 970 | Colorado* | 82%
|
| Oklahoma, Texas, Arkansas, Louisiana | 1,125 | Red | 81%
|
| Wyoming, Idaho, Oregon, Washington | 1,040 | Snake | 75%
|
| Tennessee, Alabama, Kentucky | 935 | Tennessee | 72%
|
| Texas | 860 | Brazos | 44%
|
| Colorado, New Mexico, Texas, Oklahoma | 906 | Canadian | 29%
|