Froschgrundsee

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Froschgrundsee
Froschgrundsee in 2009 with the Froschgrundsee Bridge in the background
Coordinates	50°21′0″N 11°1′42″E / 50.35000°N 11.02833°E / 50.35000; 11.02833
Construction began	1982
Opening date	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

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]