Mathisleweiher

Mathisleweiher
The Mathisleweiher in the Eschengrundmoos Nature Reserve
Mathisleweiher
LocationHigh Black Forest

Baden-Württemberg

Breisgau-Hochschwarzwald
Municipality of Hinterzarten
Coordinates47°53′06″N 8°05′05″E / 47.88489°N 8.08481°E / 47.88489; 8.08481
Primary inflowsZartenbach
Primary outflowsZartenbach Rotbach Dreisam Elz Rhine North Sea
Max. length0.14 km (0.087 mi)
Max. width0.200 km (0.124 mi)
Surface area0.018 km2 (0.0069 sq mi)2
Surface elevation999 m (3,278 ft)

The Mathisleweiher is a large bog lake, under 2 hectares in area, in the Black Forest in southern Germany. It lies in the High Black Forest between Feldberg in the west and the Titisee in the east on the territory of Hinterzarten at about 999 m above NN southwest of the village in the Eschengrundmoos Nature Reserve. The pond impounds the Zartenbach which flows through it from west-southwest to east-northeast. The stream rises on the eastern slopes of the Ramselehöhe (1,112 m above NN) at about 1,055 m above NN, picks up the Eschengrundmoosbach from the right from the protected bog and runs for less than a kilometre before entering the lake. A shorter stream runs from the north from the woods of the Stuckwald. It has a catchment of 1.0 km2

The lake is accessible from Hinterzarten but only on foot. A path runs from the village passing close to the lake and a spur branches off to the east shore.

Together with the Mathislehof, Mathislemühle and Mathislewald the pond belongs to the Müller-Fahnenberg Foundation of the University of Freiburg.