ISSN: 2578-4994
Authors: Amare DG, Kassie AE*, and Sulla GG
Prioritization of watersheds based on water plot capacity of Kulfo watershed has been evaluated by linear, aerial and relief aspects. Morphometric analysis has been attempted for prioritization for nine sub-watersheds of Kulfo watershed in Chamo lake basin, which is a tributary of the CHAMO LAKE. The Sub-watersheds are delineated by Arc Map 10.2 software as per digital elevation model (DEM). Assessment of drainages and their relative parameters such as stream length, drainage density, texture ratio, form factor, circulatory ratio, elongation ratio and bifurcation ratio has been calculated separately for each sub-watershed using the Remote Sensing (RS) and Geospatial techniques. Finally, the prioritized score on the basis of Morphometric behavior of each sub-watershed is assigned and thereafter consolidated scores have been estimated to identify the most sensitive parameters. The analysis reveals that stream order varies from 1 to 5; however, the first-order stream covers maximum area of about 87.7 %. Total number of stream segment of all order is 1,165 in the watershed. The study emphasizes the prioritization of the sub-watersheds on the basis of Morphometric analysis. The final score of entire nine sub-watersheds is assigned as per erosion threat. The sub-watershed with the least compound parameter value was assigned as highest priority. However, the sub-watersheds has been categorized into three classes as very high (5–7.9), high (8–10.9), moderate (11-13.9) and low priority (14-16.9) on the basis of their maximum (14.43) and minimum (5.71) prioritized score.
Keywords: Prioritization; Morphometric; Sub-watershed
