Irrigation with Cut-Back Furrow Streams

by John G. Sakkas,
William E. Hart,

Serial Information: Journal of the Irrigation and Drainage Division, 1968, Vol. 94, Issue 1, Pg. 91-106

Document Type: Journal Paper


Nonuniformity of water distribution in irrigated fields results from unequal intake-opportunity times along the run. The cut-back of inflow (as suggested by previous workers) allows a large initial stream and was proposed to eliminate this inequality. This requires a variable number of furrows to be brought under irrigation at the beginning of successive time intervals. A mathematical analysis of the variation is presented and results are summarized in tables which give the number of furrows started at the beginning of each time interval and being irrigated during each time interval. These tables enable the irrigator to distribute correctly the available quantity of water and, when using siphons, to estimate the number of siphons required.

Subject Headings: Irrigation | Furrow irrigation | Rivers and streams | Water intakes | Siphons | Water table | Irrigation water | Inflow

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