| States | River | % Correct |
|---|---|---|
| Texas, Chihuahua, Coahuila, Nuevo León, Tamaulipas | Rio Grande | 98%
|
| New York, Ontario | St Lawrence | 84%
|
| Arizona, Baja California | Colorado | 77%
|
| New York, Ontario | Niagara | 47%
|
| Michigan, Ontario | Detroit | 42%
|
| Michigan, Ontario | St Clair | 40%
|
| Maine, New Brunswick | St John | 28%
|
| Maine, New Brunswick | St Croix | 18%
|
| Minnesota, Ontario | Rainy | 16%
|
| Michigan, Ontario | St Marys | 12%
|