The Impact of Deltas
on the Mean Long-Term Water River Runoff

V. N. Mikhailov

Moscow State University, Leninskie gory, Moscow, 119992 Russia

Received September 5, 2002

Abstract—Specific features of the water balance of river deltas located in different geographic zones are dis-
cussed. Variations in the mean long-term water runoff in river deltas are estimated. As revealed, the river water
runoff increases in the deltas located in subarctic, subequatorial, and equatorial regions, where precipitation
exceeds evaporation, while the river water runoff decreases in deltas located in the temperate zone, subtropics,
and tropics, where evaporation exceeds precipitation. It is noted that increase in water runoff is typical of the
river deltas of the world as a whole.

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