Estimation of Soil Erosion in India
Publication: Journal of Irrigation and Drainage Engineering
Volume 109, Issue 4
Abstract
Soil erosion is a serious problem in India. In the absence of precise estimates of total erosion in the country, this paper presents a method to arrive at a first estimate of soil erosion, sediment loads of rivers and sedimentation in reservoirs. In this analysis, existing annual soil loss data for 20 different land resource regions of the country sediment loads of some rivers, and rainfall erosivity for 36 river basins and 17 catchments of major reservoirs are utilized and statistical regression equations are developed for predicting sediment yield. Using these expressions and corresponding values of area, rainfall, rainfall erosivity and surface runoff, annual values of total sediment loads of streams, sediment deposition in reservoirs, and sediment lost permanently into the sea are estimated. According to this estimate, which is treated as a first approximation, soil erosion is taking place at the rate of 16.35 ton/ha/annum which is more than the permissible value of 4.5–11.2 ton/ha. About 29% of the total eroded soil is lost permanently to the sea. Ten percent of it is deposited in reservoirs. The remaining 61% is dislocated from one place to the other.
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Information & Authors
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Published In
Journal of Irrigation and Drainage Engineering
Volume 109 • Issue 4 • December 1983
Pages: 419 - 434
Copyright
Copyright © 1983 ASCE.
History
Published online: Dec 1, 1983
Published in print: Dec 1983
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