Wichelsee is a

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...

in Obwalden, Switzerland. Its surface area is . The

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

is located in the municipalities of

Alpnach Alpnach is a village in the canton of Obwalden in Switzerland. It comprises the villages of Alpnach Dorf, Alpnachstad and Schoried. History Alpnach is first mentioned about 870 as ''Alpenacho''. Geography Alpnach has an area, , of . Of this are ...

and

Sarnen , neighboring_municipalities= Alpnach, Entlebuch (LU), Flühli (LU), Giswil, Hasle (LU), Kerns, Sachseln , twintowns = Sarnen is a small historic town, a municipality, and the capital of the canton of Obwalden situated on the northern shores o ...

. It formed after the

Sarner Aa The Sarner Aa is a long river in the Swiss canton of Obwalden. It drains the area to the eastern side of the Brünig Pass, flowing through the Lake Lungern, Lake Sarnen and the Wichelsee, before entering Lake Lucerne near Alpnach. It goes by s ...

was dammed in 1955. The area around the lake was protected in 2005.Wichelsee - Outdoor Active
Travel Guide Report (In German)

References

Lakes of Obwalden Wichel RWichel Protected areas of Switzerland {{Obwalden-lake-stub