Revista de teledetección y SIG

Abstracto

Potential Water Harvesting Site Identification for Micro-Dam using scs-gis Approach: Case of Genfel River Catchment, Eastern Zone of Tigray, Ethiopia

Aschalew Fekadu, Birhanu Woldeyohannes, Selam Getnet

Potential water harvesting area assessment in the country particularly in the Study area is essential for increasing agricultural production. This study was, therefore, very important to identify potential water harvesting areas for Micro Dam construction. In SCS CN-GIS with Analytic Hierarchy Process (AHP) method in Genfel Watershed Eastern Zone of Tigray, Northern Ethiopia to select potential water harvesting area. Digital Elevation Model, 30m resolutions to generate physiographic characteristics of the Watershed were downloaded from united states geological survey, Required data set, a remotely sensed land sat 7 image of march 2016 with a spatial resolution of 30m to classified the land cover types, and Daily rainfall data were collected from six metrological stations (2000 – 2015) from National Metrological Agency to estimate annual runoff. The causative factors for water harvesting sites for micro-Dam in the watershed are taken into account as runoff volume, Soil, slope, drainage density, Land use land cover, and Geology.