| Helenesee | |
|---|---|
| Location | Brandenburg |
| Lake type | artificial lake |
| Basin countries | Germany |
| Max. length | ca. 2.5 km |
| Max. width | 0.9 km |
| Surface area | ca. 250 ha |
| Max. depth | 56.63 m |
Helenesee is a lake in Brandenburg, Germany. Its surface area is ca. 250 ha. With a depth of 56.63 m, the Helenseee is the second deepest lake in Brandenburg, only surpassed by the lake Großer Stechlinsee. It is situated approximately 8 kilometers in the south of Frankfurt (Oder). It was formed after the flooding of a former open-pit mining which started in 1958.