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Hayward Zone 4 Line A

Watershed Modeling

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Watershed Modeling Overview

Phase I Phase II Phase III

Water Sediment Contaminants

Hydrological Simulation Program FORTRAN (HSPF)

Evaporation

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Inputs:

Land use data-provides % imperviousness

Meteorological data-local precipitation and evaporation data

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Output: Uncalibrated hydrograph

Predicted Flow compared to Observed Flow

Input: Oakland Foothills precipitation data

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Next steps

• Add storm drains

• Calibrate hydrograph

• Model sediment

• Model contaminants (e.g. Hg, PCBs)

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