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Watershed Modeling at SFEI. John J. Oram, Lester J. McKee, Mikolaj Lewicki SPLWG December 2007. Improve understanding of monitored watersheds Determine sediment and contaminant loads from unmonitored watersheds. Objectives. Bay Area Hydrologic Model (BAHM) SCVURPPP, ACCWP, SMCWPPP
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Watershed Modeling at SFEI John J. Oram, Lester J. McKee, Mikolaj Lewicki SPLWG December 2007
Improve understanding of monitored watersheds Determine sediment and contaminant loads from unmonitored watersheds Objectives
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
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)
$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
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