Nearly half of the sea floor within the northwest is designated as a nature reserve, of which 125 hectares take up the fowl open house flat water and island zone within the Altmühlsee, which is made up of numerous particular person islands. The lake extends about 1300 meters from north north -east to south -southwest and has a water floor of 23 hectares at a depth of as much as 4.5 meters. Some smaller locations within the southwest are only some hundred meters away from the lake. Around the ditch, an outer wall extends to the southern tip, which nonetheless measures 50 by 60 meters on its outer edge. From the south the ditch remains to be flowed through a small stream. The north financial institution of the Brombachsee rises to the splitter cherry and hop nation, and within the south the low mountain range of the ****s rises. The Grafenmühle was geared up with four water wheels until the twentieth century; Three wheels drove grinders, a bike a sawmill. The three mentioned were created as a part of the recultivation and renaturation of the remaining opencast mines created by the former lignite mining and its facilities. On the air aspect of the dam, at the working outlet, is the Brombachsee power home, which might generate electricity from the water launched into the lower reaches of the Brombachsee with two by-stream turbines, every with a design output of 315 kilowatts, with a useful gradient of 32 meters.