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Role of Sediment in the Design and Management of Irrigation Canals - UNESCO-IHE PhD Thesis (Paperback)
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Role of Sediment in the Design and Management of Irrigation Canals - UNESCO-IHE PhD Thesis (Paperback)
Series: IHE Delft PhD Thesis Series
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The performance of irrigation schemes that carry sediment laden
water is often poor. Modern irrigation schemes are increasingly
demand based, which means that the water flow in the canals is
determined by the crop water requirements. Accordingly the flow in
the canal network is not constant as the crop water requirement
changes with the climate and the growing stages. Also the inflow of
the sediment is not constant throughout the irrigation season. Such
schemes, particularly having unlined canals in alluvial soils, are
difficult to design and to manage without compromising the
flexibility or maintenance cost. This research has made an in-depth
assessment on the role of sediment in the design and management of
an irrigation scheme by using the data of Sunsari Morang Irrigation
Scheme, Nepal. An analysis of the velocity and shear stress
distribution across a non-wide trapezoidal canal has been made to
derive the correction factor for the sediment transport predictors.
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