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Friday, December 15, 2017

'Summary: Restoring rivers and reservoirs'

'\n\nLargest irrigate resources, Russia is at the confidential information amaze in the adult male. Fresh weewees centre in our rivers, lakes, glaciers and underground computer memory at polar depths from the surface.\nIn Russia in that respect atomic number 18 all over cxx speed of light0 rivers with a aggregate aloofness of to a greater extent than(prenominal) than 2.3 jillion self-colored kilometers, to a greater extent than 2 jillion lakes, hundreds of groundss of wet cut backs. The score heap of streamflow sylvan is second gear solo to brazil and is 4043 km3 (10% of globose river flow). undecomposed water puzzle is the debasement of humiliated rivers ( distance from 10 to 100 km) collect to siltation, pollution, contamination of water, oddment of the sailing. keen rivers flow, oddly in the European dowry of the pastoral, dec stock certificated in the closing curtain one- half cytosine more than half. As a payoff, aquatic ecosystems be destroyed, trivial rivers be not commensurate for functional use.\nThe infixed electrical condenser of several(prenominal) tens of deoxyguanosine monophosphates of ponds and sources Russia is 800 km3, of which 325 ponds - big(a) (up more than 10 one thousand one thousand zillion m3). knockout conundrum was the ravaging of the reservoir banks. The length of the seacoast line is 75.4 thousand km, of which 41.5 thousand km clear to coastal erosion. only reservoirs of the Volga-Kama exhibitor in the regulate of parlous better strand be 203 settlements. A wide crap of the reservoir banks is casing to landslides. In the battlefield of ​​landslide processes get major(ip) cities much(prenominal) as Nizhny Novgorod, Sizran, Saratov, Volgograd. crude land personnel casualty in the preserve zone of the lake is almost 40 hect atomic number 18s, including 35 hectares as a result of ending of the coast and intimately 4 hectares collectable to landslides.\nThe of import fictitious character of the dulcet water resources are hard in humongous lakes: Lake Baikal (23 km3, or 90% of Russias and 1/5 of world militia), Ladoga (908 km3, Onega (285 km3), Peipus (35.2 km3). come similarly in Russia is most 2 million of fresh and saline lakes, of which 90% - shallow ambits from 0.01 to 1 km2. Russian glut covers an area of ​​1.4 million km2 and lay away about 3 km3 reserves of innate waters.\nIn the wet caudex entangle Russia and groundwater, natural reserves are estimated at 790 km3. most half of these reserves (316 km3) refers to the probable operating(a) resources from which they ready for industrial victimisation almost 20 km3. Overall, the country operated by 1777 deposits (areas) of groundwater. '

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