Katnosa

Katnosa
Katnosa
Katnosa Katnosa Katnosa
Location	Nordmarka (Lunner, Jevnaker and Ringerike)
Coordinates	60°09′N 10°35′E
Primary outflows	Katnoselva
Basin countries	Norway
Surface area	2.2 km2 (0.85 sq mi)
Surface elevation	464 m (1,522 ft)

Katnosa is a regulated lake in Nordmarka, Norway bordering to the municipalities Lunner, Jevnaker and Ringerike. It drains through the river Katnoselva to the lakes Store Sandungen, Hakkloa, Bjørnsjøen and Skjærsjøen. It is regulated by the dam Katnosdammen from 1886. Katnosa is part of the Spålen–Katnosa Nature Reserve.