| Source or Source Confluence | River | % Correct |
|---|---|---|
| Lualaba River- Boyoma Falls, Democratic Republic of the Congo | Congo River | 98%
|
| Lake Tana, Ethiopia (be specific) | Blue Nile | 91%
|
| Gangotri Glacier, Satopanth Glacier, Khatling Glacier, and waters from melted snow, Uttarakhand, India | Ganges | 89%
|
| Thaba Putsoa, Maloti Mountains (Drakensberg), Lesotho | Orange River | 76%
|
| Canby Mountain, San Juan Mountains, Colorado | Rio Grande | 69%
|
| Lasagongma Spring, Mt. Guozongmucha, Zadoi, Tibet, China | Mekong | 62%
|
| Cerro Delgado-Chalbaud, Parima Mountains, Venezuela | Orinoco | 56%
|
| Trinity Mountains, Siskiyou County, California | Sacramento River | 49%
|
| Confluence of Grizzly Creek and Little Grizzly Creek, Jackson County, Colorado | Platte River (North Platte) | 38%
|
| western slopes of the Black Range, Sierra County, New Mexico | Gila River | 33%
|
| Smolensk Oblast, Russia | Dnieper | 29%
|
| Confluence of Clover Fork and Martin's Fork, Baxter, Kentucky | Cumberland River | 24%
|
| Blackwater Draw, Curry County, New Mexico | Brazos River | 20%
|
| Confluence of New River and Gauley River, Gauley Bridge, West Virginia | Kanawha River | 9%
|
| Sangre de Christo Mountains, southern Las Animas County, Colorado | Canadian River | 7%
|