Comprehensive Sewer Plan Hydraulic Modeling

City of Lynnwood Washington


BHC worked with the City to develop a skeletonized model of the sanitary collection system. The calibrated model was used to identify system deficiencies and alternatives in the 2012 Sewer Comprehensive Plan. Since 2012, the City has experienced significant growth since 2012, and the model has been used continually as tool to evaluate the sewer impacts for both individual developments and different growth scenarios.


  • Model used to evaluate sewer impacts of development proposals
  • Sensitivity analysis to sewer system for different growth scenarios
  • Alternative system configurations resulted in reduced City capital outlays
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