Kuhgrabensee
Kuhgrabensee is a lake entirely in the southeast of the Bremen district of Blockland . The lake has a surface area of approximately 17.8 hectares and a maximum depth of 16 meters with an average depth of 13 meters.
| Kuhgrabensee | |
|---|---|
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  Kuhgrabensee | |
| Location | Bremen |
| Coordinates | 53°7′3″N 8°50′46″E |
| Basin countries | Germany |
| Surface area | 17.8 ha (44 acres) |
| Average depth | 13 m (43 ft) |
| Max. depth | 16 m (52 ft) |
| Water volume | 1,800,000 m3 (64,000,000 cu ft) |
| Settlements | Bremen |
The Kuhgrabensee was excavated from 1970 to 1972 during the construction of the A27. Since July 1987 within his bank area is a 29.6-acre nature reserve . In 1998 to 1999 it was extended in the context of environmental compensation measure an approximately 4 acre flat water surface. The lake is groundwater-fed and has the influence of the salt dome Lilienthaler a high salt content. From the water quality of her Kuhgrabensee is mesotrophic .
The lake is entered in the EU as a European bird sanctuary. The lake offers habitat to many pioneer plants, dragonflies and amphibians. The Kuhgrabensee is the breeding ground of many birds, such as the great crested grebe.