| Length (in miles) | River | % Correct |
|---|---|---|
| 2,341 | Missouri | 100%
|
| 1,469 | Arkansas | 89%
|
| 239 | Salt Fork Arkansas | 89%
|
| 148 | Kansas | 78%
|
| 453 | Republican | 56%
|
| 171 | South Fork Republican | 56%
|
| 195 | North Fork Smoky Hill | 44%
|
| 397 | Saline | 44%
|
| 575 | Smoky Hill | 44%
|
| 359 | Big Blue | 33%
|
| 698 | Cimarron | 33%
|
| 245 | Little Blue | 33%
|
| 463 | Neosho | 33%
|
| 180 | Caney | 22%
|
| 217 | Marais des Cygnes | 22%
|
| 287 | North Fork Solomon | 22%
|
| 184 | Solomon | 22%
|
| 292 | South Fork Solomon | 22%
|
| 154 | Walnut | 22%
|
| 156 | Arikaree | 11%
|
| 159 | Chikaskia | 11%
|
| 130 | Medicine Lodge | 11%
|
| 169 | North Fork Cimarron | 11%
|
| 198 | Pawnee | 11%
|
| 310 | Verdigris | 11%
|