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Journal of Environmental Hydrology
ISSN 1058-3912 |
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Electronic Journal of the International Association for
Environmental Hydrology
JEH Volume 18 (2010), Paper 5 Posted March 31, 2010 IRRIGATION CANAL WATER LOSSES
S. Sunjoto ABSTRACT Quantifying irrigation water losses in paddy fields is required for good water management. Losses in conveyance canals consist of evaporation and infiltration. A semi-empirical formula for canal infiltration was developed by Moritz and a semi-graphical equation was developed by Bouwer. An analytical method formula was recently developed by Sunjoto and was tested against field data of water losses in the canal of the Sukawati Irrigation Area in Comal, Central Java, Indonesia. Analysis of the results was conducted using a least squares and linear regression methods. The results of the comparison show that the Sunjoto formula has the best fit to field data, followed by the Bouwer and Moritz formulas. Based on the tested Sunjoto formula, this paper proposes formulas for water losses of canals with one side and both sides lined. Reference: Sunjoto, S. 2010. Irrigation canal water losses. Journal of Environmental Hydrology, Vol. 18, Paper 5. CONTACT: S. Sunjoto Professor, Department of Civil Engineering and Environment Gadjah Mada University Yogyakarta 55281 Indonesia E-mail: suny@tsipil.ugm.ac.id |
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