Dossespeicher Kyritz, lake in Germany

The Dossespeicher Kyritz is a reservoir in northwestern Brandenburg impounding the Klempnitz, a tributary of the Dosse. Its curved dam is about 900 metres long and roughly 5 metres high. The reservoir holds 16.6 million cubic metres, currently limited to 9.8 million, and can rise to about 18.3 million in floods.

The reservoir was constructed between 1974 and 1979 and opened in May 1979, merging a network of three separate lakes into one large body of water. The dam replaced a village street at Stolpe and created an entirely new water landscape in a region shaped by ice age processes over 10,000 years ago.

The Dossespeicher takes its name from the Dosse River, whose water it stores and regulates. The basin was created where several separate lakes once existed, now perceived as a single connected body of water, while surrounding fields and embankments shape the image of a cultivated landscape.

The dam is a curved embankment about 900 m long and 5 m high; the water level normally sits between 40.50 and 38.50 m above sea level and can drop to 38.00 m in dry years. The Dossespeicher-Zuleiter, a 5.3 km feeder channel, links the Dosse to the reservoir. Access is on foot along the dam crest and surrounding paths.

The flood-control space between 40.50 and 41.00 m above sea level holds about 1.8 million cubic metres, not the larger figure often quoted. The reservoir's usable operating space is 6.5 million cubic metres, and the stored volume is currently capped at 9.8 million cubic metres instead of the full 16.6 million. The 5.3 km Dossespeicher-Zuleiter can divert Dosse water into the lake at 3.1 m³/s.