Unlike the larger lakes in the realm equivalent to Brombachsee and Altmühlsee, it isn't used to transfer water that flows naturally from the Danube into the Regnitz and Primary river programs. In the long run, a mean annual switch by means of your complete system of a hundred and fifty million m³ of water is anticipated, 5/6 of which by way of the main- Danube Canal. Nevertheless, when the algae drawback occurs within the inflowing lakes, new water is normally not fed into the lake, which suggests the water degree drops significantly in summer season time season . It's surrounded by a ditch that runs all around and was beforehand crammed with water. A small stream flows by way of the ditch from the south. The last owners, Hermann and Elsa Walter, ran the mill&# 39, s agriculture and sawmill until the mill was demolished within the 1980s and the Kleiner Brombachsee was flooded. The Furthmühle has been run by the Walter household since 1748. The mill had been operated by the Walter household since 1858 until the property was purchased by the Free State of Bavaria to assemble the Kleiner Brombachsee. Since 1999, flood water on the upper Altmühl has been diverted into the Altmühlsee, from the place it flows by a tunnel into the Brombachsee, which is already deeper on the opposite aspect of the watershed. On the option to Brombachsee, the watershed is crossed once more.