Potential Assessment of Small-Scale Irrigation Scheme by Using Internal and External Indicators: Case Study on Kokono Small Scale Irrigation Scheme, North Wollo Zone, Amhara Region, Ethiopia

Abstract

The study was conducted to evaluate the potential of Kokono irrigation scheme at north Wollo zone, Amhara region using indicators. Primary data collection includes measuring discharge, soil moisture and depth of water applied. The secondary data collection includes determination of crop types, total yields, farm gate prices of irrigated crops, area irrigated per crop per season, and cost of production. The internal indicators (conveyance, application and storage) were used to check the potential of the scheme. From analyses of internal indicators, the conveyance, application, storage and overall efficiencies were found to be 38.02%, 65.93%, 44.89% and 25.07%. From the analysis of external indicators, the outputs per cropped area were found as 753.38 us$ ha^-1, the value of the outputs per command area of scheme was 768.44 us$ ha^-1, the output per unit irrigation supply of 0.1us$m^-3, output per water consumed was 0.18 us$ m^-3. The relative water supply and relative irrigation supply were found to be 1 and 1.7 respectively. The irrigation ratio of the scheme was found to be 0.51. In general, based on the assessment carried out, the potential of Kokono irrigation scheme is low.

Keywords: Kokono; Irrigation; indicators; scheme

DOI: 10.7176/CER/15-2-01

Publication date:June 30^th 2023