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Zeya Reservoir

Zeya Reservoir
Area: 2420 km2
The greatest depth: 34 m

Zeya water reservoir is a reservoir on the Zeya River in the Amur Region of Russia. It was formed by the dam of Zeyskaya HPP in 1974-1980. The reservoir extends upstream Zeya from the dam of the hydroelectric power station in the city of Zeya, on a section of length 40 kilometers within the Tukuringsra mountain range is a narrow pond with bays that formed at the confluence of the tributaries of the Zeya, and upstream, within the Verkhneyzeyskaya depression, passes into a wide water. The Baikal-Amur Mainline runs along the northern coast of the reservoir and crosses the bay of the reservoir 1100 meter bridge near the village of Bomnak. The reservoir is used for navigation and fishing (whitefish, taimen, pike, Amur catfish, grayling and sturgeon).

Zeya Reservoir
Main characteristics

The area of ​​the Zeya reservoir is 2419 sq. Km, the full and useful capacity of the reservoir is 68,42 and 38,26 cubic km. When creating the Zeya water reservoir, 3,9 thousand hectares were flooded. Farmland. In the area flooded with a reservoir, there were 14 settlements, inhabited by 4 460 people, who were resettled in newly constructed and transferred settlements. Zeya reservoir, in terms of water volume, occupies 3-place in Russia, after Fraternal (169,3 km)3) And Krasnoyarsk (73,3 km)3) Reservoirs. It is a source for water supply for most of the city. The reservoir was formed quite recently (about 35 years ago) and the processes of the biological decomposition of the upper organic layer of the earth are still continuing, as evidenced by the dark brown color of the water. This process has stabilized, but noticeable purification of water can only be expected for years through 20-30. Water in its composition with low mineralization and a high content of biogenic and organic substances.

Zeya Reservoir
Ecological problems

Before the flooding of the reservoir, the forestry was not completely performed. The remaining forest slowly disintegrates, forming phenols. The dam of the hydroelectric power station is built without fish lifters, as a result, the natural way of fish passage to the spawning grounds is blocked. In addition, the negative impact on the ichthyofauna produces significant fluctuations in the reservoir level, up to 8 meters. The absence of ship lifters divided the shipping into two non-communicating sections along the lower and upper tunnels. The Zeya River below the dam does not freeze for 80-100 km. Therefore, in winter time on this interval of the river the transport communication on ice between settlements is broken. In winter, along the ice-free part of the river is a dense fog, which affects the health of people in this area. Due to the late freezing of the reservoir (December), autumn can be warm, long, and the frosts softened.

Zeya Reservoir

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