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Watershed Modeling at SFEI: Enhancing Understanding and Management

Improve understanding of monitored watersheds, determine sediment and contaminant loads from unmonitored watersheds using Bay Area Hydrologic Model (BAHM). Study focus on stormwater management, brake pad impacts on South San Francisco Bay, and development of single watershed models. Includes Guadalupe River project and collaboration opportunities.

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Watershed Modeling at SFEI: Enhancing Understanding and Management

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  1. Watershed Modeling at SFEI John J. Oram, Lester J. McKee, Mikolaj Lewicki SPLWG December 2007

  2. Improve understanding of monitored watersheds Determine sediment and contaminant loads from unmonitored watersheds Objectives

  3. Bay Area Hydrologic Model (BAHM) SCVURPPP, ACCWP, SMCWPPP Model Used: HSPF Purpose: Stormwater management Brake Pad Partnership (BPP) Gov., Manufacturers, Enviros, stormwater mngers Model Used: HSPF Purpose: Impact of brake pad Cu on South San Francisco Bay Other Studies

  4. BAHM and BPP are where we want to be: multi-watershed models Water, sediment, contaminant loads However, we want to walk … not run. Develop single watershed models where we monitor sediments and contaminants Incrementally add watersheds as we gain knowledge Other Studies (continued)

  5. $75k funding for 2008 Objectives: Develop HSPF model for Water Sediment Hg and PCBs Estimate current loads Determine proportional flow regime Estimate long-term avg loads Project #1 : Guadalupe River

  6. Potential Challenges Reservoirs Plumbing (e.g., storm drains) Stream x-sections Others … Would like to leverage SCCWRP Learn Drew Ackerman’s HSPF secrets Why use SWMM for BMPs? Project #1 : Guadalupe River

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