6.5. Determination of Irrigated Command Area, Project Duty, Duty at Outlet Head and Canal Head, Water Allowance, and Canal Capacity

Accuracy in the estimation of duty for the irrigation supply system is one of the most important parameters for designing and planning of irrigation projects. In the earlier section, duty (D) as well as its relationship with delta (Δ) and base period (B) has been defined. This section will present a detailed procedure for computing the project duty and delta, required storage capacity, ICA and irrigation intensity (IN) with respect to known hydrology and specified command area (CCA), as well as outlet duty and water allowance for estimating the designed capacity of the outlet and canal through the following set of ...

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