Abstract: This paper presents optimality conditions tor a parabolic‐eanal design accounting for freeboard and limitations on velocity and canal dimensions. Freeboard may be based on a design discharge or specified as a function of ...

Abstract: The problem of optimal reservoir operations consists of obtaining optimal releases, reservoir storages, and downstream reach routed flows based on forecasted inflows and precipitation. Five goal‐programming schemes that ...

Abstract: Subsystem identification in water distribution systems is important for repairing pipes and containing damages. In this paper, a method is proposed to identify the smallest subsections of a network called segments that are ...

Abstract: In planning and design of sewer networks, most decisions are spatially dependent because of the right-of-way considerations and the desire to have flow by gravity. The geographic information system- (GIS-) based approach ...

Abstract: A procedure has been developed to increase irrigation efficiency by estimating probabilistic irrigation requirements for lowland rice cultivation. The procedure uses a water balance equation with random components to ...

Abstract: A statistical formulation for estimating the average time of detention within a pond for a captured runoff volume is presented. For a conservative estimator, it is assumed that mixing takes place during an event and that ...

Abstract: Two standard test problems that are nonconvex with multiple local minima are considered. An outer flow search–inner optimization procedure is proposed for choosing better local minima. Each pipe network is judiciously ...

Abstract: A comprehensive review of pipe replacement analyses is presented, from which an economically sustainable threshold break rate for replacement of pipelines in deteriorating water distribution systems is derived that yields ...

Abstract: In water distribution systems, valves play a crucial role in system reliability and security by providing a shutoff function when it is necessary to isolate subsystems. In this paper failure of shutoff valves to close is ...