| Source or Source Confluence | River | % Correct |
|---|---|---|
| Plynlimon, Wales | River Severn | 72%
|
| Outflow of Great Lakes- Kingston, Ontario / Cape Vincent, New York | St. Lawrence River | 66%
|
| 4 miles west of Lake Baikal, Russia | Lena River | 64%
|
| Western end of Great Slave Lake, Northwest Territories | Mackenzie River | 53%
|
| Khan Khentii Strictly Protected Area, Khentii Province, Mongolia | Amur River | 50%
|
| Bílé Labe, Krkonoše, Czech Republic | Elbe | 50%
|
| Teton Wilderness, Wyoming | Snake River | 42%
|
| Confluence of East Fork and Tennessee Creek, Leadville, Colorado | Arkansas River | 41%
|
| Confluence of the Sênggê Zangbo and Gar Tsangpo, Tibet, China | Indus River | 41%
|
| Lake Hartwell, Georgia and South Carolina | Savannah River | 41%
|
| Confluence of North Fork and South Fork at Front Royal, Virginia | Shenandoah River | 31%
|
| northern Sublette County, Wyoming in the Wind River Range | Green River | 22%
|
| Lake Capimitchigama, Quebec | Ottawa River | 22%
|
| Otsego Lake, New York | Susquehanna River | 17%
|
| Smallwood Reservoir, Labrador | Churchill River (Atlantic) | 11%
|