Böhmerweiher, Nature reserve lake in western Munich, Germany

Böhmerweiher consists of two gravel-pit lakes in Munich's Aubing-Lochhausen-Langwied-Freiham district, south of Gröbenzell. The larger Großer Böhmerweiher covers about 4.75 hectares and has an island of just under 130 square metres plus many bays. The smaller Kleiner Böhmerweiher, about 1.5 hectares, is bordered by a reed belt and is hard to reach.

The lakes were created in the 1960s through wet gravel extraction by landowner Böhmer. After a concrete mixing company briefly used the site, it developed into recreational and protected nature areas.

The name comes from the surname of the landowner Böhmer, who began wet gravel extraction here in the 1960s. The lakes are currently leased to the Kreisfischereiverein Starnberg, so anglers fish the larger lake. The smaller lake's reed belt and ant-rich shore keep most visitors out, leaving it as a biotope.

The larger lake is used for fishing and swimming, but water quality has not always been reliable. The smaller lake is hard to reach because of a reed belt and many ants on the ground. A development plan from 2006 proposed a lifeguard station, sanitary facilities and a kiosk, but none has been built.

The larger lake contains an unusual small island in the middle of the water. This natural feature sets it apart from most other lakes in the area and makes it particularly interesting for nature watchers.