Water Resources Planning and Management and Urban Water Resources 

About: Water Resources Planning and Management and Urban Water Resources is an academic journal. The journal publishes majorly in the area(s): Water resources & Stormwater. Over the lifetime, 65 publications have been published receiving 154 citations.

Water Supply Impact Analysis of Proposed Water Quality Control Plan for Salinity for San Francisco Bay and Sacramento-San Joaquin Delta Estuary

Abstract: This paper presents the procedures and techniques employed as part of the Bay-Delta proceedings to evaluate the water supply impacts of various proposed flow and water quality objectives for the Delta. The primary tool selected for analyzing the impacts was DWR's Planning Simulation Model. A number of alternative objectives to protect various beneficial water uses were proposed by the Board in their plan. Simulation studies were formulated and conducted to analyze the proposed objectives individually and in combination. Impacts were examined by comparing study results with a base study using current Delta flow and salinity requirements. The CVP-SWP system was used as a surrogate to the whole system to evaluate overall water supply impacts. These impacts could then be used to evaluate the relative benefits or trade-offs of proposed changes in Delta flow or water quality objectives. This process brought various water interests together so that agreement on technical methodology could be used as a basis for reaching a clearer understanding of statewide impacts of proposed Delta water quality plans.

An Alternate Formulation of Time as a Decision Variable to Facilitate Real-Time Operation of Water Supply Systems

Abstract: With the advent of a new focus on energy conservation and the availability of cost efficient computer technology, many water utilities are investigating new ways to improve the efficiency of their water distribution system operations. Of particular concern is improved operation of the pumping facilities since pumping generally accounts for a large fraction of the total operating costs. One way to improve such operations is through the use of optimally generated pump schedules. Optimal pump schedules may be generated using some type of optimization approach coupled with a physical description of the water distribution network. Where the distribution system can be characterized as a serial configuration, dynamic programming can be efficiently applied to generate an optimal control policy. When the system is nonserial, an optimal control policy may be obtained through the use of dynamic programming coupled with a spatial decomposition scheme or through the application of nonlinear programming.

The Hydrology of Urban Runoff Quality Management

Abstract: Recent regulatory requirements to reduce pollutant discharges from municipal storm sewer systems have intensified the need for approaches to developing design parameters, such as the selection of a design storm, which can be applied to urban stormwater quality management facilities. Examination of six U.S. cities in areas with widely varying climatic conditions reveals that most rainfall occurs during small storms. Hydrologic simulations using long-term rainfall records of these areas indicate that a reasonable design storm is on the order of the 1-month to 4-month storm, and a unit storage volume of roughly 0.2 to 0.9 inches will provide effective pollutant capture. Detention basins which capture these smaller storms can be provided to control urban stormwater pollutants. It may be possible to retrofit existing flood control basins for this purpose; however, water quality control basins employ a significantly different storage strategy and should serve relatively large (typically over 50 acres) areas.

Water Supply and Sanitation Policies in Mexico

Abstract: The National Water Commission (CNA), is the responsible Department for the Governmental Water Division in Mexico. Within the National Potable Water Supply and Sanitation Program, the Commission gives technical and administrative assistance to decentralized operating systems. This paper focuses on the water supply and sanitation policies that have been established within the country, by the Commission.

Uncertainties in Planning Inter-Agency Water Supply Transfers

Abstract: San Francisco Water Department, facing a possible fifth year of drought, purchased surplus water from the Placer County Water Agency and arranged for wheeling of the water through State Water Project facilities to an emergency turnout on the State's South Bay Aqueduct. Planning for construction of the emergency turnout and the inter-agency transfer of water included many operational pitfalls and environmental uncertainties.