November 1, 2017 Thesis Open Access

ABRHA YBEYN GEBREMEDHN

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    <subfield code="a">EVALUATION OF WATER DELIVERY PERFORMANCE IN ROBIT SMALLSCALE IRRIGATION SCHEME, AMHARA, ETHIOPIA</subfield>
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    <subfield code="a">&lt;p&gt;Robit small-scale irrigation scheme is located in the Amhara National Regional State and&lt;br&gt;
was constructed in 2012. However, the performance of the irrigation scheme has not been&lt;br&gt;
evaluated yet. In the present study, the performance of the scheme was evaluated by&lt;br&gt;
estimating water delivery performance indicators, water conveyance efficiency, water&lt;br&gt;
conveyance losses, and satisfaction of irrigation users. The water delivery performance&lt;br&gt;
adequacy, efficiency, equity and dependability were evaluated by monitoring discharge at&lt;br&gt;
nine selected offtakes; three each at the head, middle and tail end of the scheme command&lt;br&gt;
area during the crop season from April to June 2017. The water conveyance efficiency of&lt;br&gt;
the main and secondary canals and thus the water losses in water conveyance were&lt;br&gt;
estimated by measuring irrigation water flow at different locations along the canals. The&lt;br&gt;
satisfaction of the irrigation water users from the irrigation service received was&lt;br&gt;
evaluated using the binary Logit Model at the head, middle and tail end of the irrigation&lt;br&gt;
scheme, and for the entire irrigation scheme. Irrigation water flow in the main and&lt;br&gt;
secondary canals, as well as at nine tertiary offtakes was measured using Current meter&lt;br&gt;
and 3-inch Parshall flume. The data were analyzed using STATA, CROPWAT, ARC GIS&lt;br&gt;
software, and Microsoft Excel. The water delivery performance indicators adequacy,&lt;br&gt;
efficiency, equity and dependability varied widely from head to tail reach and, during the&lt;br&gt;
crop season from April to June with overall average value equal to 0.88, 0.92, 0.09 and&lt;br&gt;
0.11 respectively. Thus, the irrigation scheme when compared with Molden and Gates&lt;br&gt;
(1990) standards was found under fair condition in adequacy and dependability and&lt;br&gt;
under good condition in efficiency and equity.&lt;/p&gt;</subfield>
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