Froschgrundsee
Froschgrundsee also known as Schönstädtspeicher is a retention basin to protect the city of Coburg in Bavaria from the flooding of the Itz, Effelder, and the Grümpen. It lies in the municipality of Rödental in Upper Franconia. Froschgrundsee was completed in 1986 after four years of construction and cost 43 million DM in operations.[1]
| Froschgrundsee | |
|---|---|
 View of Froschgrundsee in 2009, in the back is the Froschgrundsee Bridge. | |
| Coordinates | 50°21′0″N 11°1′42″E |
| Construction began | 1982 - 1986 |
| Dam and spillways | |
| Height (foundation) | 18 m |
| Height (thalweg) | 3407 m |
| Length | 350 m |
| Elevation at crest | 359 m |
| Width (crest) | 9 m |
| Dam volume | 420000 m³ |
| Reservoir | |
| Total capacity | 69 Mio. m³ |
| Active capacity | 66 Mio. m³ |
| Catchment area | 11084 km² |
| Surface area | 94 ha |
| Normal elevation | 3445 m |
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