Helmuth-Schack-See

Luruper Moorgraben (Lurup Bog Ditch) is a small stream in Osdorf, Hamburg, Germany, partially marking the boundaries of Lurup, Hamburg, after which it is named. It comes to the surface near the street of Knüllkamp in Osdorf. Nearby, from the right, the small stream of Müllergraben flows into Luruper Moorgraben.

Born Park (German: Bornpark) is public park in Osdorf, Hamburg, Germany. Located around Lake Helmuth Schack and the streams of Düpenau and Luruper Moorgraben, it is used as a recreational area mainly by the inhabitants of Osdorf, Osdorfer Born and nearby Schenefeld in Schleswig-Holstein. The park extends to an area of 13.4 ha.