| Borkener See | |
| Location: | West Hesse Depression, Hesse |
| Coords: | 51.0347°N 9.2669°W |
| Pushpin Map: | Hesse |
| Catchment: | 3.5km2 |
| Basin Countries: | Germany |
| Length: | 1.25km (00.78miles) |
| Width: | 0.78km (00.48miles) |
| Area: | 139ha |
| Max-Depth: | 52.5m (172.2feet) |
| Volume: | 35000000m2 |
| Elevation: | 177m (581feet) |
Borkener See is an artificial lake in West Hesse Depression, Hesse, Germany. At an elevation of, its surface area is . Created by the mining of lignite coal, the lake is nutrient-poor and slightly basic in pH. The lake and its surrounding area are a habitat of "particular importance as a rest area for water birds and wading birds"[1] and are protected as part of a nature preserve that spans 350 hectares.[2] [3]