A brief summary of the findings of Soviet studies on the influence of additional evaporation from reservoirs and irrigated tracts, projected through 1980, on the precipitation over two large territories in which the principal irrigation networks and reservoirs are to be located: (1) the south of the European territory of the Soviet Union, (2) the south of Western Siberia and North Kazakhstan. Calculations show that evaporation from irrigation and reservoirs will not increase the amount of precipitation significantly. The south European territory can expect an additional 5-mm to 6-mm layer of moisture, or an increase in precipitation of 1.5 percent. Southwest Siberia and North Kazakhstan will receive less than 10 mm. 4 pp. Bibliog.
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