| River Basin District | Winter 2015 | Winter 2015 txt | Summer 2015 | Summer 2015 txt |
|---|---|---|---|---|
| Thames (UK) | 7 | 7 | 20 | 20 |
| Elbe (DE, CZ) | 14 | 14 | 20 | 20 |
| Aland islands (FI) | 19 | 19 | 21 | 21 |
| Cavado, Ave and Leca (PT) | 4 | 4 | 21 | 21 |
| Thessalia (GR) | 41 | 41 | 21 | 21 |
| Po Basin (IT) | 9 | 9 | 22 | 22 |
| Southern Appenines (IT) | 14 | 14 | 23 | 23 |
| Crete (GR) | 4 | 4 | 24 | 24 |
| Sardinia (IT) | 17 | 17 | 25 | 25 |
| Basque County internal basins (ES) | 5 | 5 | 25 | 25 |
| Western Sterea Ellada (GR) | 0 | 0 | 25 | 25 |
| South East (UK) | 15 | 15 | 27 | 27 |
| Eastern Sterea Ellada (GR) | 14 | 14 | 28 | 28 |
| Attica (GR) | 15 | 15 | 28 | 28 |
| Eastern Peloponnese (GR) | 3 | 3 | 29 | 29 |
| Zealand (DK) | 21 | 21 | 33 | 33 |
| Sicily (IT) | 28 | 28 | 34 | 34 |
| Andalusia Mediterranean Basins (ES) | 10 | 10 | 34 | 34 |
| Weser (DE) | 29 | 29 | 36 | 36 |
| Ucker (PL, DE, CZ) | 29 | 29 | 39 | 39 |
| Northern Peloponnese (GR) | 0 | 0 | 40 | 40 |
| Western Peloponnese (GR) | 0 | 0 | 41 | 41 |
| Middle Appenines (IT) | 13 | 13 | 41 | 41 |
| Ebro (ES) | 28 | 28 | 47 | 47 |
| Douro (ES,PT) | 3 | 3 | 56 | 56 |
| Balearic Islands (ES) | 14 | 14 | 69 | 69 |
| Internal Basins of Catalonia (ES) | 20 | 20 | 72 | 72 |
| Tagus and Western Basins (ES,PT) | 14 | 14 | 79 | 79 |
| Meuse (FR, BE, DE, NL) | 67 | 67 | 88 | 88 |
| Sado and Mira (PT) | 28 | 28 | 92 | 92 |
| Algarve Basins (PT) | 28 | 28 | 92 | 92 |
| Malta (MT) | 100 | 100 | 100 | 100 |
| Jucar (ES) | 73 | 73 | 123 | 123 |
| Gran Canaria (ES) | 102 | 102 | 126 | 126 |
| Guadiana (ES,PT) | 50 | 50 | 131 | 131 |
| Segura (ES) | 249 | 249 | 259 | 259 |