Storm Water Management and Wetland Restoration—Ballona Channel Wetlands

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by Vassilios A. Tsihrintzis, Psoma & Associates, Santa Monica, United States,
Gabor M. Vasarhelyi, Psoma & Associates, Santa Monica, United States,
William Trott, Psoma & Associates, Santa Monica, United States,
Jacob Lipa, Psoma & Associates, Santa Monica, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract: A storm water management plan was engineered to provide storm water dention necessary for site develop and at the same time to allow wetland restoration. Objectives of the project were: flood control, restoration of wetland habitat values, and quality control of urban storm water runoff. To achieve the plan a complex hydrodynamic model was developed, utilizing EPA's Storm Water Management Model (SWMM, EXTRAN module). EXTRAN performs a dynamic routing of storm water flows using an explicit technique to solve the gradually varied flow equations. This model allowed the sizing of storm drains and wetland circulation pipes and channels, and the computation of water surface elevations under both storm condition and tidal influence. It was found that EXTRAN is a valuable tool to conduct studies involving storm and tidal water routing through channel and conduit networks, and linked reserviors.

Subject Headings: Stormwater management | Gradually varied flow | Water flow | Wetlands (coastal) | Ecological restoration | Hydrologic models | Water management | Wetlands (fresh water) |

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