Water Resources Engineering


HDL provides water resources engineering for a variety of clients and project types including municipal watershed management, roadway construction, airport construction, master planning, and utility planning.  Our services include Stormwater Management Modeling (EPA SWMM and SUSTAIN) Hydrologic and Hydraulic Analysis and Design, Flood Plain Analysis, HEC RAS Modeling, Fish Passage Design, and Water Distribution Modeling (WaterCAD).




  • Museum Drive Hydro Study (Matanuska-Susitna Borough)
  • Palmer-Wasilla Highway Eastern Terminus Project (State of Alaska DOT&PF)
  • Parks Highway 44-52 Hydrologic and Hydraulic Report (State of Alaska DOT&PF)
  • Parks Highway 83-90 Hydrologic and Hydraulic Flood Plan Analysis (State of Alaska DOT&PF)
  • Watershed Management Term Agreement (Municipality of Anchorage)
  • Nightmute Drainage Study (Nightmute Tribal Council)