Saaty’s Analytical Hierarchical Process based Prioritization of Sub-watersheds of Bina River Basin using Remote Sensing and GIS

Abstract

To achieving sustainable development management of all Natural resources like land and water is necessary since alleviation the impact of natural disasters. In the present study, Saaty’s analytical hierarchical process (SAHP) based multi-criteria decision-making approach has been developed for identification of priority sub-watersheds. Using different erosion hazard parameters (EHPs) affecting the process of soil erosion in the watersheds. Bina river basin lies in between 23⁰ 18' N to 23⁰ 45' N latitudes and   78⁰ 07' E to 78⁰ 32' E longitudes was selected as study area contributes total geographical area of 1111.58 km2. To achieve the selected objectives of the study area thematic layer of nine Erosion Hazard Parameters, Universal Soil Loss Equation (USLE), Sediment Transport Index (STI) and Slope were generated in GIS environment and other parameters, Sediment Yield (SY), Sediment Production Rate (SPR), Drainage Density, Form Factor, Channel Frequency and Circulatory Ratio were estimated and analysed. Saaty’s Analytical Hierarchical Process was adopted to prioritize sub-watersheds has been divided in to 28 sub-watersheds. Determination of priority for study area all the EHPs for 28 sub-watersheds have been determined, normalized and weight for each watershed are determine using the AHP comparison matrix and weight of EHPs. The priority of all sub-watersheds was categorized in to very high, high, moderate, low and very low.