Engineering Services

Hydrology and Hydraulics

Hydrology and Hydraulics


KMA has experience in various aspects of hydrology and hydraulics pertaining to project planning and preliminary engineering/final design, environmental permits/permit support, and compliance with the NJ Stormwater Management Rules.

Our services include:

  • Roadway Drainage Design
  • Evaluation of Stormwater Management Measures and for Compliance with the NJ Stormwater Management Rules (NJAC 7:8)
  • Design of Structural Stormwater Management Facilities for Water Quality and Quantity, including Bio-retention Systems, Detention Basins,Retention Basins, Extended Detention Basins, and Infiltration Basins
  • Preparation of Soil Erosion and Sediment Control Plans
  • Preparation of Applications for NJDEP Flood Hazard Area Control Act (FHACA) Permits, including Required Engineering Analyses (Determination of Flood Hazard Areas, Floodways, and Riparian Zones, Net Fill Calculations, Backwater Analyses)
  • Performing Field and Laboratory Investigations/Testing for Design of Stormwater Management Facilities
  • Post-Construction Analysis of Stormwater Management Facilities for Compliance with the NJ Stormwater Management Rules

KMA engineers have expertise and are fluent in the use of the following hydrology and hydraulic software programs:

  • HEC-1, TR 55, TR 20, WMS, HEC-25, and HEC-UNET for peak flowsHydrology and Hydraulics
  • Storm-CADD for highway drainage design
  • HEC-2, River CAD, and HEC-RAS for water surface profiles/backwater analyses
  • PondPack for analysis of stormwater management basins
  • EPA SWMM-stormwater and combined stormwater/sanitary analysis