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| dc.contributor.author | GOBEZIE, TSEGAYE | |
| dc.date.accessioned | 2020-03-16T08:28:16Z | |
| dc.date.available | 2020-03-16T08:28:16Z | |
| dc.date.issued | 2020-03-15 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/10329 | |
| dc.description.abstract | This study ventured to introduce the concept of process and comparative performance indicatorswhichtaken asa tool to evaluate the performance of two small-scale irrigation schemes in North Shewa Zone, Efratana gidim and Kewet woreda. The irrigation schemes were Chiro with 175 ha of irrigable, 125ha of irrigatedland with 168 beneficiaries and Sewur with 191 ha designed and currently it expands to 301 ha of irrigable and irrigated area with 595 beneficiaries.For data analysesboth thePrimary and secondary data‘s were used.The two irrigation schemes were compared using minimum sets of comparative performance indicators. In order to evaluate the irrigation water use efficiency of farmers at field level, nine farmer fields were selected from each irrigation schemes in relation to their location (from the upper, middle and lower end waterusers). CROPWAT 8.0software was used to estimate the crop water and irrigation water requirement by using Penman-Monteith equation. The average application efficiencies were 63.36 and 69.52%, conveyance efficiencies 82.73 and 77.94% and storage efficiency 77.55 and 82.22%and the overall scheme efficiencies were 54.07 and 53.25% were analyzed from process performance indicators at chiro and sewur irrigation scheme respectively. Fromcomparative performance indicator analysis, Outputs per unit irrigated area of the twoirrigation projects were 3,823.05 and 5,568.60 US$/ha on chiro and sewur respectively.But the value of the output per unit command area of chiro 3,329.63 US$/ha was too lower than the value of Sewur 14,737.85US$/ha. The output per unit irrigation supply for chiro was 1.02 while in Sewur 1.93 US$/m3. Output per water consumed was 1.01 in chiro and 1.32 US$/m3 for Sewur.The ratios of relative water supply and relative irrigation supplies were 2.33 and 2.66 for chiro,1.99 and 1.80 for Sewur irrigation projects respectively. This indicated that irrigation water is not a constraint and higher amount of water wasdiverted at chiro, but the reverse is true for sewur irrigation scheme. From physical performance indicators, the cropping intensity, irrigation ratio and sustainable irrigated lands were 122, 71 and 51% in chiro and 168, 100 and 158% in sewur respectively and from this 71% of the area were irrigated from the irrigable land in chiro while it was 100% in sewur. This shows that in all cases of comparative indicators sewur irrigation scheme is performed better than chiro. | en_US |
| dc.language.iso | en | en_US |
| dc.subject | Hydraulic engineering | en_US |
| dc.title | PERFORMANCE EVALUATION OF SMALL SCALE IRRIGATIONS USING PROCESS AND COMPARATIVE PERFORMANCE INDICATORS ON CHIRO AND SEWUR IRRIGATION SCHEMES IN NORTH SHEWA ZONE, AMHARA, ETHIOPIA | en_US |
| dc.type | Thesis | en_US |
