| Name | Topolnitsa Reservoir |
| Image | |
| Type | Natural reservoir |
| Area (m²) | 4,100,000 |
| Basin (m²) | 1,380,999,936 |
| Depth (m) | 70 |
| Height (m) | 400 |
| Latitude (°) | 42.4166679382 |
| Length (m) | 8,700 |
| Longitude (°) | 24.0000000000 |
| Surface elevation (m) | 400 |
| Volume (m³) | 137,000,000 |
| Width (m) | 1,000 |