Demonstration of Watershed Management Effectiveness in Sediment Control Using Comprehensive Watershed Modeling

by Mark W. Glidden, Boyle Engineering Corp, United States,
Sarah E. Plocher, Boyle Engineering Corp, United States,



Document Type: Proceeding Paper

Part of: Watershed Planning and Analysis in Action

Abstract:

The Arroyo Pasajero, which drains a 500-square mile watershed in the Coastal Range of California, flows into the San Joaquin Valley, intersecting the San Luis Canal section of the California aqueduct. The original design of the crossing structure at the canal underestimated the magnitude and frequency of flooding and sediment delivery. A study was undertaken to evaluate alternative schemes to reduce water and sediment reaching the canal. The study involved the development of comprehensive computer models to simulate the hydrologic, hydraulic, sediment yield and sediment transport characteristics of the watershed. The models were used to evaluate watershed management practices along with various alternative structural measures to reduce the water and sediment reaching the canal crossing.

Subject Headings: Computer models | Watersheds | Sediment | Sediment transport | Water resources | Canals | Water management | California | United States

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