Narva Reservoir

Reservoir in Russia

59°18′N 28°10′E / 59.300°N 28.167°E / 59.300; 28.167TypeReservoirPrimary inflowsNarva River, Plyussa RiverPrimary outflowsNarva RiverCatchment area55,848 km² (21,563 sq mi)Basin countriesRussia, Estonia, Latvia, BelarusSurface area191 km² (74 sq mi)Average depth1.8 m (5 ft 11 in)^[1]Max. depth15 m (49 ft)Water volume365 hm³ (296,000 acre⋅ft)Residence time12 days

Narva Reservoir (Estonian: Narva veehoidla; Russian: Нарвское водохранилище, romanized: Narvskoye vodokhranilishche) is a reservoir by the Narva River, shared by Russia and Estonia.

The reservoir was constructed during 1955–1956, during the Soviet era. It provides water to Narva Hydroelectric Station (installed capacity 125 MW, located on the Russian side and owned by the power company TGC-1), and cooling water to the Estonian Narva Power Plants. Its surface area at normal headwater level of 25 metres (82 ft) is 191 square kilometres (74 sq mi), of which 40 square kilometres (15 sq mi) belongs to Estonia. Its drainage basin is 55,848 square kilometres (21,563 sq mi).^[2]

The overall water exchange rate is high (about 30 times a year), with some almost stagnant areas. The ecological status is estimated as "good" (as of 2007).^[2]

References

^ "Assessment of the chemical and ecological state of the Narva reservoir" (PDF). Retrieved 2017-02-10.
^ ^a ^b Our Waters: Joining Hands Across Borders : First Assessment of Transboundary Rivers, Lakes and Groundwaters, by United Nations Economic Commission for Europe, Rainer Enderlein, Published by United Nations Publications, 2007, ISBN 92-1-116972-0, p. 237^{[permanent dead link]}