| ADRIATIC RIVER BASIN DISTRICT |
| AEGEAN ISLANDS |
| AGDER |
| ALGARVE RIVERS |
| ANDALUSIA MEDITERRANEAN BASINS |
| ATTICA |
| AZORES |
| BALEARIC ISLANDS |
| BELGIAN COAST |
| BLACK SEA |
| BORNHOLM |
| BOTHNIAN BAY |
| BOTHNIAN BAY INTERNATIONAL DISTRICT TORNE RIVER - NORWAY |
| BOTHNIAN SEA |
| CATALAN RIVER BASIN DISTRICT |
| CAVADO AVE AND LECA |
| CENTRAL MACEDONIA |
| CEUTA |
| CRETE |
| CYPRUS |
| DANUBE |
| DANUBE RIVER BASIN DISTRICT |
| DAUGAVAS UPJU BASEINU APGABALS |
| DAUGUVA RBD |
| DISTRETTO ALPI ORIENTALI |
| DISTRETTO APPENNINO CENTRALE |
| DISTRETTO APPENNINO MERIDIONALE |
| DISTRETTO APPENNINO SETTENTRIONALE |
| DISTRETTO FIUME PO |
| DISTRETTO SARDEGNA |
| DISTRETTO SICILIA |
| DNIESTER RIVER BASIN DISTRICT |
| DONAU BY |
| DOURO |
| DUERO |
| EAST AEGEAN |
| EAST-ESTONIA RIVER BASIN DISTRICT |
| EASTERN CANTABRIAN |
| EASTERN MACEDONIA |
| EASTERN PELOPONNESE |
| EASTERN STEREA ELLADA |
| EBRO |
| EIDER |
| EL HIERRO |
| ELBE |
| ELBE RIVER BASIN DISTRICT |
| EMS |
| EPIRUS |
| FUERTEVENTURA |
| GALICIAN COAST |
| GAUJAS UPJU BASEINU APGABALS |
| GRAN CANARIA |
| GUADALETE AND BARBATE |
| GUADALQUIVIR |
| GUADIANA |
| HOCHRHEIN |
| HUNGARIAN PART OF THE DANUBE RIVER BASIN DISTRICT |
| ICELAND |
| INNLANDET AND VIKEN |
| INTERNATIONAL RIVER BASIN DISTRICT OF THE MEUSE |
|
| INTERNATIONAL RIVER BASIN DISTRICT OF THE RHINE |
|
| INTERNATIONAL RIVER BASIN DISTRICT OF THE SCHELDT |
| INTERNATIONAL RIVER BASIN DISTRICT OF THE SEINE |
| INTERNATIONALT |
| JUCAR |
| JYLLAND OG FYN |
| KEMIJOKI |
| KOIVA RIVER BASIN DISTRICT |
|
| L ESCAUT LA SOMME ET LES COURS D EAU COTIERS DE LA MANCHE ET DE LA MER DU NORD |
| LA GARONNE L ADOUR LA DORDOGNE LA CHARENTE ET LES COURS D EAU COTIERS CHARENTAIS ET AQUITAINS |
| LA GOMERA |
| LA LOIRE LES COURS D EAU COTIERS VENDEENS ET BRETONS |
|
| LA MEUSE |
| LA PALMA |
|
| LA SAMBRE |
|
| LA SEINE ET LES COURS D EAU COTIERS NORMANDS |
| LANZAROTE |
|
| LE RHIN |
| LE RHONE ET LES COURS D EAU COTIERS MEDITERRANEENS |
| LES COURS D EAU DE LA CORSE |
| LES COURS D EAU DE LA GUADELOUPE |
| LES COURS D EAU DE LA MARTINIQUE |
| LES COURS D EAU DE LA REUNION |
| LES FLEUVES ET COURS D EAU COTIERS DE LA GUYANE |
| LIELUPE RBD |
| LIELUPES UPJU BASEINU APGABALS |
|
| MAAS |
| MADEIRA |
| MAMONOVKA RIVER BASIN DISTRICT |
| MAYOTTE |
| MELILLA |
|
| MEUSE |
| MINHO |
| MINHO AND LIMA |
| MOERE AND ROMSDAL |
| NEAGH BANN |
| NEMUNAS RBD |
| NEMUNAS RIVER BASIN DISTRICT |
| NORDLAND AND JAN MAYEN |
| NORTH BALTIC SEA |
| NORTH WESTERN |
| NORTHERN PELOPONNESE |
| NORWEGIAN - FINNISH |
| OBERE EMS EMSNORDRADDE HASE |
| ODER |
| ODER RIVER BASIN DISTRICT |
| ODRA |
| PREGOLYA RIVER BASIN DISTRICT |
| PROKHLADNAYA RIVER BASIN DISTRICT |
| REPUBLIC OF IRELAND |
|
| RHINE |
| ROGALAND |
| SAALE OBERE MOLDAU BEROUNKA EGER UND UNTERE ELBE |
| SADO AND MIRA |
|
| SCHELDT |
| SCHLEITRAVE |
| SEGURA |
| SJAELLAND |
| SKAGERRAK AND KATTEGAT |
| SOUTH BALTIC SEA |
| TAGUS |
| TAGUS AND WEST RIVERS |
| TENERIFE |
| THESSALIA |
| THRACE |
| TIDEWESER |
| TINTO ODIEL AND PIEDRAS |
| TORNIONJOKI |
| TROENDELAG |
| TROMS AND FINNMARK |
| VENTA RBD |
| VENTAS UPJU BASEINU APGABALS |
| VESTFOLD AND TELEMARK |
| VESTLAND |
| VISTULA |
| VISTULA RIVER BASIN DISTRICT |
| VOUGA MONDEGO AND LIS |
| WARNOWPEENE |
| WEST AEGEAN |
| WEST-ESTONIA RIVER BASIN DISTRICT |
| WESTERN CANTABRIAN |
| WESTERN MACEDONIA |
| WESTERN PELOPONNESE |
| WESTERN STEREA ELLADA |
| <all other values> |
