| Tigris and Euphrates Rivers | Turkey | Iraq | Syria | Iran | Total | |
| Discharge | % | 78.1 | 8.1 | 0.5 | 13.3 |
|
| Billion m3/year | 65.7 | 6.8 |
| 0.5 | 84.2 | |
| Drainage area | % | 20.5 | 46.0 | 9.0 | 19.0 |
|
| Billion m3/year | 170,000 | 469,000 | 77,000 | 37,000 | 819,000 | |
| River length | % | 33.5 | 51.0 | 15.5 | - |
|
| km | 1630 | 2478 | 754 | - | 4862 | |