| Region | Total river runoff (%) | Share of global river runoff (%) | Share of global population (%) |
| Europe | 3240 | 8.0 | 13.0 |
| Asia | 14,550 | 35.8 | 60.5 |
| Africa | 4320 | 10.6 | 12.5 |
| North and Central America | 6200 | 15.2 | 8.0 |
| South America | 10,420 | 25.6 | 5.5 |
| Australia and Oceania | 1970 | 4.8 | 0.5 |
| Total | 40,700 | 100.0 | 100.0 |