GIS-based evaluation of micro-watersheds to ascertain site suitability for water conservation structures |
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| Authors: | Praveen G Saptarshi Rao Kumar Raghavendra |
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| Institution: | 1.Department of Environmental Sciences,University of Pune,Pune,India |
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| Abstract: | The planning of conservation measures to conserve water and soil resources taking hydrological planning unit as micro-watershed
is considered to be effective. The automated watershed delineation technique using the spline interpolated filled digital
elevation model (DEM) is effective in converging slopes of the area in which the stream patterns match with the manually digitized
stream patterns of the topographical map. The various vector spatial layers like the slope/aspect, land-use/land-cover, runoff
potential, soil erosion potential and the associated attribute information governing the criteria for different conservation
structures can act as input layers in integrated spatial analysis module in GIS environment to evolve derived layers indicating
the locations of conservation sites meeting the requisite criteria. The reliability of suitable conservation sites suggested
out of integrated spatial GIS analysis could be ascertained using the multi criteria analysis incorporating the various factors
controlling soil erosion process in the micro-watershed groups. The details of the above work are discussed in the paper. |
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