| Depth | River | % Correct |
|---|---|---|
| 300 ft/ 91 m | Amazon | 96%
|
| 820 ft/ 250 m | Congo | 76%
|
| 200 ft/ 61 m | Mississippi | 73%
|
| 656 ft/ 200 m | Yangtze | 72%
|
| 262 ft/ 80 m | Yellow River | 66%
|
| 584 ft/ 178 m | Danube | 63%
|
| 328 ft/ 100 m | Mekong | 61%
|
| 381 ft/ 116 m | Zambezi | 41%
|
| 213 ft/ 65 m | Saint Lawrence | 30%
|
| 216 ft/ 66 m | Hudson | 13%
|