Tyrifjorden

Tyrifjorden
Tyrifjorden is located in Buskerud
Tyrifjorden
Tyrifjorden
Location of Tyrifjorden in Buskerud
Tyrifjorden is located in Norway
Tyrifjorden
Tyrifjorden
Tyrifjorden (Norway)
LocationBuskerud, Norway
Coordinates60°2′N 10°8′E / 60.033°N 10.133°E / 60.033; 10.133
Typefjord lake
Primary inflowsBegna, Henåa, Skjærdalselva, Sogna and Storelva
Primary outflowsDrammenselva
Catchment area9,898.81 km2 (3,821.95 sq mi)
Basin countriesNorway
Max. length26 km (16 mi)
Max. width10 km (6.2 mi)
Surface area138.56 km2 (53.50 sq mi)
Average depth95 m (312 ft)
Max. depth295 m (968 ft)
Water volume13.13 km3 (3.15 cu mi)
Shore length1171.81 km (106.76 mi)
Surface elevation63 m (207 ft)
IslandsFrognøya, Storøya, Utøya
SettlementsHønefoss
References[1]
Official nameNordre Tyrifjord Wetlands System
Designated18 March 1996
Reference no.802[2]
1 Shore length is not a well-defined measure.

Tyrifjorden (Lake Tyri) is a lake in Norway. It lies 40 kilometres (25 mi) northwest of Oslo and is the nation's fifth largest lake with an area of 138.56 km2.[3] It has a volume of 13 km3, is 295 meters deep at its deepest, and lies 63 meters above sea level. The lake's primary source is the Begna river, which discharges into Tyrifjorden at Hønefoss where the river forms the waterfall of Hønefossen. Its primary outlet is at Vikersund near the lake's southwest corner, where Tyrifjorden discharges into the Drammenselva river.

  1. ^ Seppälä, Matti (2005), The Physical Geography of Fennoscandia, Oxford University Press, p. 145, ISBN 978-0-19-924590-1
  2. ^ "Nordre Tyrifjord Wetlands System". Ramsar Sites Information Service. Retrieved 25 April 2018.
  3. ^ "Statistisk årbok 2009: Geografisk oversikt" (in Norwegian). Ssb.no. Retrieved 15 May 2019.