Stormwater and Flood Control Planning

• Rainfall - runoff studies
  • Gage data analysis
  • HEC-HMS analysis
  • TR-55 and rational method
• Modeling open and closed conduit drainage systems
  • HEC-RAS
  • SWMM
  • Unsteady flow - UNET or HEC-RAS ver. 3.0
• Detention systems
• Alternative and impact assessment

City of Piedmont Master Drainage Plan

• Assessment of current capacity of open drainage and culvert system
• Evaluated channel, culvert, detention, and non-structural options for relieving flooding in the basin
• Modeled system components using HEC-RAS, HEC-HMS, and FHWA HY-8.

City of Tulsa - South Bolewood Storm Drainage Improvements

• Assessment of deficiencies and potential improvements to underground storm drainage system
• Modeled system using EPA SWMM-EXTRAN model
• Used model to determine optimum piping to pass design runoff without manhole overtopping
• EXTRAN model required since system under pressure flow at peak discharge and backwater from Arkansas River
• Evaluated detention alternatives using HEC-1