Earth Snapshot RSS Feed Twitter
 
 
 
 

Posts tagged Yenisei River

Border Between Russia’s Tuva Republic and Mongolia

50.2N 92.6E

July 28th, 2009 Category: Lakes, Rivers

Russia and Mongolia - June 8th, 2009

Russia and Mongolia - June 8th, 2009

The green, vegetated terrain of Russia above the Sayan Mountains contrasts with the yellow Mongolian terrain below.

In Russia, above the Sayan Mountains, the long, dark blue line is the Krasnoyarskoye Reservoir on the Yenisei River. Lake Uvs Nuur, below the mountains, marks the border between Mongolia and Russia’s Tuva Republic.

The Tuva Republic is situated in the far south of Siberia. The western part is a drier lowland, while the east is forested and elevated

Much of Mongolia, on the other hand, consists of steppes, with with cold and mountainous regions to the north and west. The highest point in Mongolia is the Khüiten Peak in the Tavan bogd massif in the far west at 4,374 m (14,350 ft), near the cloud covered area in the lower left quadrant.

The Sayan Mountains and the Yenisei River, Russia

69.4N 86.1E

June 26th, 2009 Category: Rivers

Krasnoyarsk Krai, Russia - June 23rd, 2009

Krasnoyarsk Krai, Russia - June 23rd, 2009

The Sayan Mountains are a mountain range in southern Siberia, Russia. The Eastern Sayan extends 1000 km from the Yenisei River to the southwest end of Lake Baikal. The Western Sayan forms the eastern continuation of the Altay Mountains, stretching for 500 km to the middle of the Eastern Sayan.

Here, part of the Eastern Sayan in Krasnoyarsk Krai is visible, bordered by the Yenisei River (lower left) and several lakes. The largest lake visible is Khantayskoye Reservoir, situated between the river and the snow-capped mountain peaks.

The Sayan Mountains’ towering peaks and cool lakes southwest of Tuva give rise to the tributaries that merge to become the Yenisei River, one of Siberia’s major rivers, which flows north over 2000 miles to the Arctic Ocean.

While the general elevation is 2000 to 2700 m, some of the individual peaks, consisting largely of granites and metamorphic slates reach altitudes of over 3000 m, with the highest being Munku-Sardyk at 3492 m.

From the Mongolian plateau the ascent is on the whole gentle, but from the plains of Siberia it is much steeper, despite the fact that the range is masked by a broad belt of subsidiary ranges of an Alpine character.

Krasnoyarskoye Reservoir, Russia

55.1N 91.5E

June 21st, 2009 Category: Lakes, Rivers

Russia - June 8th, 2009

Russia - June 8th, 2009

The Krasnoyarskoye Reservoir on the Yenisei River is one of the largest man-made lakes of river origin in Siberia. It is situated in Russia’s Krasnoyarsky District, at 243m above sea level and a distance of 2,502 km from the mouth of the Yenisei.

The construction of the reservoir started in 1967 and its live storage was filled in 1970.  The back- water from the dam extends for a distance of 386 km. The Krasnoyarskoye Reservoir is of the channel type and a long-term storage regulation.

The drainage basin of the reservoir covers three natural zones, forest, forest-steppe and steppe, located in the eastern part of the Sayan Altai mountain range. These zones can be identified in the image by the green color of the forests and the tan color of the steppes.

The drainage network of the basin mainly consists of mountain rivers with narrow valleys, of which 35 enter Krasnoyarskoye Reservoir. The recharge water from the rivers is formed by melting snow and precipitation of summer- autumn period.

The water resources of the reservoir are used for electric power generation at the Krasnoyarsk hydro-electric power station (capacity 6x106kWh). Annual power production is 20×109 kW.

The reservoir is also used for navigation, transportation and commercial fishing during the ice free period. Further, its water is used for irrigation in the steppe region of the basin.

Environmental threats to the reservoir include pollution and lake shore erosion. The major sources of pollution are mining industry wastewater and domestic sewage from the cities of Abakan and Tchernogorsk. The projects to deal with both problems are bank reinforcement, removal of floating and sinking timbers, sewage treatment, and filling shallow parts of the lake for agricultural development.