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Vol.52 >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10466/1038

Title: <Original Paper>Assessment of Actual and Estimated Water Diversions in the Nile Delta
Authors: KOTB, Tarek H. S.
WATANABE, Tsugihiro
OGINO, Yoshihiko
Keywords: Nile Delta
command water requirements
actual water supply
annual canal efficiency
gradual crop planting
Issue Date: 31-Mar-2000
Publisher: Osaka Prefecture University
Citation: 大阪府立大学農学部学術報告. 2000, 52, p.19-28
Abstract: In the Nile Delta of Egypt, the estimated command water requirements for irrigation and other purposes dissimulate the actual supply. Yet, the canal diversion requirements are practically planned according to some historical records, disregarding the estimated command requirements. This study aims at diagnosing the reasons for dissimulating the actual situation in the estimated command requirements for a case study canal in the Eastern Nile Delta (Bahr Mouice Canal). The crop water duties were firstly reviewed and verified since they are considered, together with the cropping pattern, as the main influential parameters for estimating the command requirements. The actual water supply from the available resources during the period from 1989 to 1993 was analyzed in consideration of the command requirements. The monthly and annual canal efficiencies were employed as the chief indicators to conduct the analysis and suggest better method for water diversions' estimate. The effect of gradual crop planting was suggested as an important reason for the dissimulation. In order to avoid such an effect, it is therefore suggested to use the annual canal efficiency instead of any periodic estimate. The annual efficiency of Bahr Mouice Canal was estimated as high as 85.5 percent, which is quite acceptable in view of the extensive official and unofficial reuse of irrigation water. The study ends with suggesting some areas for future research, particularly in updating crop water duties and developing a convenient method for simulating the effect of gradual planting in the planned scenario.
URI: http://hdl.handle.net/10466/1038
Appears in Collections:Vol.52

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