Soil erosion assessment survey of Sumandar Katha catchment and adjoining areas of Harro river, Abbottabad district
Soil erosion assessment survey of Sumandar Katha catchment and adjoining areas of Harro river, Abbottabad district
Maria Mussarat, Amanullah Bhatti and Mehmood Elahi
ABSTRACT
The soil erosion assessment survey of Sumandar Katha catchment and adjoining areas of Harro River was carried out in order to investigate and identify the extent and types of soil erosion that are taking place and to evaluate the risk of erosion in the study area. For this purpose, initial data were collected from 1:20,000 aerial photographs followed by field visits. The survey revealed that extent of the gully erosion, rill erosion, patches of land sliding, land sliding, land sliding and stream bank erosion was 46.31, 22.08, 1,00, 8.85 and
17.33 hectares, respectively. The general slope of the study area was 10-80% of which 10-30% was slope of the terraced area and 50-80% was slope of the forested/pasture lands. Major causes of erosion in the study area were poor land and crop management, slope
gradient, accelerated erosion near villages, erodibility of soils, low stream bank stability and heavy concentrated rains. All the above causes and features have been mapped using 1:50,000 scale.
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March 1999
Vol. 49, Iss. 1
