ABSTRACT

Clogging of the structures that supply water to secondary and tertiary units, and sedimentation of the canal network are some of the main problems in the operation and maintenance of irrigation systems. High annual investments are required for rehabilitation and maintenance to keep the systems suitable for their purpose. To reduce these expenses and to preserve and sometimes improve the performance of the irrigation networks, the sediment transport should be properly estimated in terms of time and space. An accurate prediction of the sediment deposition along the entire canal network during the irrigation season will contribute to an improved operation of the canals in such a way that the irrigation needs are fully met and at the same time a minimum deposition might be expected.