Watershed Modeling at SFEI

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Watershed Modeling at SFEI

• John J. Oram, Lester J. McKee, Mikolaj Lewicki
• SPLWG December 2007

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Objectives

• Improve understanding of monitored watersheds
• Determine sediment and contaminant loads from
  unmonitored watersheds

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Other Studies

• 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

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Other Studies (continued)

• 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

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Project 1 Guadalupe River

• 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

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Project 1 Guadalupe River

• Potential Challenges
• Reservoirs
• Plumbing (e.g., storm drains)
• Stream x-sections
• Others
• Would like to leverage SCCWRP
• Learn Drew Ackermans HSPF secrets
• Why use SWMM for BMPs?