| J | F | M | A | M | J | J | A | S | O | N | D | Country | Locality |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 111 | 111 | Chad | Chad basin | ||||||||||
| 111 | 111 | Nigeria | Cross River (Jan 2004-December 2006) | ||||||||||
| 111 | 111 | 111 | Gambia | Gambia River | |||||||||
| 111 | 111 | 111 | 111 | Senegal | Lower Senegal River | ||||||||
| 111 | 111 | 111 | 111 | 111 | 111 | Chad | Not given | ||||||
| Sudan | Sudd | ||||||||||||
| 111 | 111 | Sudan | Upper White Nile River |