灌溉排水系统工程

Performance Assessment of Small-Scale Irrigation Schemes: A Case Study of Upper Blue Nile, East Dangila Woreda, Ethiopia

Abstract

Biniam Adane1*, Fiseha Behulu2 and Dawud Temam3

Performance assessment of irrigation systems plays a big role to evaluate the productivity of schemes. Such practices could help to design possible intervention mechanisms that could be made to improve the performance of the schemes. Consequently, the aim of the study is to assess the performance of small scale irrigation systems in Dangila Woreda, to know the achievement of the schemes, the performance of system operations, and the causes that leads to under- or over-performance of these small-scale irrigation schemes.This study was conducted to assess the performances of schemes through three major categories of indicators including: (i) engineering, (ii) water use and, (iii) physical performances indicators. The outcome of water delivery performance ratio of Ashar, Zuma-1, Upper Quashine and Zuma-2 were found 0.56, 0.58, 0.87 and 0.95 respectively. From The physical performance indicators, Zuma-1, upper Quashine, Zuma-2 and Ashar which had 30, 14, 10 and 4.55 percent of command area of the schemes were under irrigation and 90, 86, 93 and 95.45 percent of the schemes were sustainable respectively. The effectiveness of structures of all schemes dictates that high system maintenance was required.