| Length | River Name | % Correct |
|---|---|---|
| 3,058 km | Saint Lawrence River | 97%
|
| 4,241 km | Mackenzie River | 94%
|
| 3,185 km | Yukon River | 85%
|
| 2,000 km | Columbia River | 76%
|
| 1,375 km | Fraser River | 73%
|
| 1,939 km | Saskatchewan River | 64%
|
| 1,231 km | Athabasca River | 58%
|
| 2,575 km | Nelson River | 58%
|
| 1,287 km | North Saskatchewan River | 58%
|
| 1,271 km | Ottawa River | 58%
|
| 1,609 km | Churchill River | 48%
|
| 1,923 km | Peace River | 45%
|
| 1,392 km | South Saskatchewan River | 45%
|
| 1,070 km | Assiniboine River | 39%
|
| 982 km | Albany River | 27%
|
| 1,005 km | Milk River | 27%
|
| 982 km | Severn River | 27%
|
| 2,338 km | Slave River | 24%
|
| 1,115 km | Liard River | 18%
|
| 974 km | Back River | 9%
|