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WRE completed the feasibility-level design of a set of flow control gates of unprecedented dimensions for an American waterway. Proposed for implementation in the Sacramento/San Joaquin River Delta, which empties into San Francisco Bay, the gates would span a length equivalent to nearly two football fields and be as high as a three-story building. The gates are designed to lie horizontally over the river bed in the “down” position and to block the entire river flow when in the “up” position. Powerful hydraulic cylinders located underwater would raise and lower the gates as frequently as twice a day. The gates are to provide a salinity intrusion barrier intended to improve water quality and fish habitats in the upper Delta.
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The Kennedy/Jenks-Sheikh-WRE Joint Venture was awarded a contract to provide specialized engineering services for recycled water projects to the City and County of San Francisco. The project includes alternatives analyses, evaluation of treatment process requirements, conceptual engineering services, development of operations plans, and assessment of environmental impacts.
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WRE assisted San Francisco’s Urban Watershed Management Program with the preparation of its Rainwater Harvesting Manual and Graywater Design Guidelines. Until recently, urban areas served by municipal water have tended to overlook rainwater and graywater as water resources.
