About the BAHM
The concept of Flow Duration control is relatively new, and designing these facilities requires the use of a continuous simulation hydrologic model to characterize the flow frequencies associated with small high frequency rainfall events.
To facilitate this design approach, SCVURPPP, ACCWP and SMCWPPP have jointly sponsored development of the BAHM - a user-friendly software tool for automated modeling and facility sizing, adapted from the Western Washington Hydrology Model (WWHM). WWHM was first developed in 2001 to support the Flow Duration design requirements in the Stormwater Management Manual for Western Washington.
The BAHM incorporates local rainfall and climate data as well as calibrated model parameters for an internal modeling engine using HSPF. The software's input and reporting interfaces allow both project designers and municipal reviewers to check designs without previous experience with simulation modeling.
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Additional installation information
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