geo.wikisort.org - Reservoir

Sværsvann is a lake in the southeast of Oslo, Norway. The lake drains off into the river Hobølelva. The lake's surrounding areas are mostly residential. Sværsvann is a popular bathing place, and the name is believed to origin from "Sværd Vandet", which means "Sword Water", because a sword was once found at the bottom of the lake.[1] The bottom water contains huge amount of salts, organic nutrition and hydrogen sulfid.[2]

Sværsvann
Sværsvann
Location	Oslo, Norway
Coordinates	59°49′01″N 10°53′23″E
Type	lake
Primary outflows	Hobølelva

References

---