|Primary inflows||Narva River, Plyussa River|
|Primary outflows||Narva River|
|Catchment area||55,848 km2 (21,563 sq mi)|
|Basin countries||Russia, Estonia, Latvia, Belarus|
|Surface area||191 km2 (74 sq mi)|
|Average depth||1.8 m (5 ft 11 in)|
|Max. depth||15 m (49 ft)|
|Water volume||365 hm3 (296,000 acre⋅ft)|
|Residence time||12 days|
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).
The overall water exchange rate is high (about 30 times year), with some almost stagnant areas. The ecological status is estimated as "good" (as of 2007).
- "Assessment of the chemical and ecological state of the Narva reservoir" (PDF). Retrieved 2017-02-10.
- 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
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