November 1, 2017 Thesis Open Access

ABRHA YBEYN GEBREMEDHN

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{
  "DOI": "10.20372/nadre:1441", 
  "author": [
    {
      "family": "ABRHA YBEYN GEBREMEDHN"
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2017, 
        11, 
        1
      ]
    ]
  }, 
  "abstract": "<p>Robit small-scale irrigation scheme is located in the Amhara National Regional State and<br>\nwas constructed in 2012. However, the performance of the irrigation scheme has not been<br>\nevaluated yet. In the present study, the performance of the scheme was evaluated by<br>\nestimating water delivery performance indicators, water conveyance efficiency, water<br>\nconveyance losses, and satisfaction of irrigation users. The water delivery performance<br>\nadequacy, efficiency, equity and dependability were evaluated by monitoring discharge at<br>\nnine selected offtakes; three each at the head, middle and tail end of the scheme command<br>\narea during the crop season from April to June 2017. The water conveyance efficiency of<br>\nthe main and secondary canals and thus the water losses in water conveyance were<br>\nestimated by measuring irrigation water flow at different locations along the canals. The<br>\nsatisfaction of the irrigation water users from the irrigation service received was<br>\nevaluated using the binary Logit Model at the head, middle and tail end of the irrigation<br>\nscheme, and for the entire irrigation scheme. Irrigation water flow in the main and<br>\nsecondary canals, as well as at nine tertiary offtakes was measured using Current meter<br>\nand 3-inch Parshall flume. The data were analyzed using STATA, CROPWAT, ARC GIS<br>\nsoftware, and Microsoft Excel. The water delivery performance indicators adequacy,<br>\nefficiency, equity and dependability varied widely from head to tail reach and, during the<br>\ncrop season from April to June with overall average value equal to 0.88, 0.92, 0.09 and<br>\n0.11 respectively. Thus, the irrigation scheme when compared with Molden and Gates<br>\n(1990) standards was found under fair condition in adequacy and dependability and<br>\nunder good condition in efficiency and equity.</p>", 
  "title": "EVALUATION OF WATER DELIVERY PERFORMANCE IN ROBIT SMALLSCALE IRRIGATION SCHEME, AMHARA, ETHIOPIA", 
  "type": "thesis", 
  "id": "1441"
}