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Numerical Model Studies of Wetland Hydraulics for Bolsa Bay, California

by Raymond Walton, Camp Dresser & McKee Int, United States,
Sandy Bird, Camp Dresser & McKee Int, United States,
Bruce Ebersole, Camp Dresser & McKee Int, United States,
Lynn Hales, Camp Dresser & McKee Int, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

The Bolsa Bay area, near Los Angeles, presently consists of three distinct regions separated by two sets of culverts. A development is being considered, in which a balance between housing and marinas, and planned wetlands is being sought. To analyze the various design alternatives, it became necessary to develop a numerical model of the existing system that could be used to examine the effect of geomery changes on system hydraulics and flushing. An earlier attempt had used a two-dimensional, finite-difference model, but this had problems with the complex (essentially one-dimensional) geometry, and flows through the culvert systems. Instead, a version of the link-node, Dynamic Estuary Model was modified to dynamically simulate flows through culverts under a variety of upstream and downstream heads.

Subject Headings: Hydraulic models | Numerical models | Wetlands (coastal) | Dynamic models | Mathematical models | Culverts | Simulation models | California | United States | Los Angeles

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