About the inventory

A. Transboundary River Sub-basins

Sava River Sub-basin
1. Sava Sub-basin
2. Kolpa/Kupa River Sub-basin
3. Una River Sub-basin
4. Drina River Sub-basin
Adriatic Sea Basin
5. Cetina River Sub-basin
Neretva and Trebisnjica River Sub-basins
6. Neretva River Sub-basin
7. Trebisnjica River Sub-basin
8. Drin River Sub-basin 
        Beli Drin / Drini Bardhe Sub-basin
        Crn Drim / Crn Drini River Sub-basin
9. Aoos/Vjosa River Sub-basin
Aegean Sea Basin
10. Vardar/Axios River Sub-basin
11. Struma/Strymon River Sub-basin
12. Mesta/Nestos River Sub-basin
13. Maritza/Evros/Meric River Sub-basin
14. Arda River Sub-basin
15. Tundja/Tunca river sub-basin

B. Transboundary Lakes

Adriatic Sea Basin
16. Lake Skadar/Shkodra
17. Lake Ohrid
18. Lake Prespa
Aegean Sea Basin
19. Lake Dojran/Dojirani