The Genkeltalsperre is a pure drinking water dam and is located in the urban areas of Gummersbach and Meinerzhagen. It is primarily fed by the rivers Genkel and Grotmicke. The mean annual precipitation in the catchment area is 1,320 millimeters, which ensures an annual inflow of around ten million cubic meters. With the drinking water of the Genkeltalsperre most households in the area can be supplied. It was built in 1950-53.