| Length | River Name | % Correct |
|---|---|---|
| 3,058 km | Saint Lawrence River | 100%
|
| 3,185 km | Yukon River | 93%
|
| 4,241 km | Mackenzie River | 86%
|
| 1,939 km | Saskatchewan River | 71%
|
| 2,575 km | Nelson River | 57%
|
| 1,609 km | Churchill River | 50%
|
| 2,000 km | Columbia River | 50%
|
| 1,923 km | Peace River | 50%
|
| 2,338 km | Slave River | 29%
|
| 1,392 km | South Saskatchewan River | 14%
|