Life’s Liquid

Water is the essence of life, and DOWL’s water group understands that every successful project must respect its importance to the natural environment and our growing population. Whether it’s for drainage and river systems, dams and irrigation, or water supply and wastewater systems, we know H2O.

Practice Lead

Wade Irion, PE


Sub Practice Areas

Yellowstone Bridge

Drainage and River Systems

One drop at a time, water seems pleasant, non-threatening. But when you look at places like the Grand Canyon, carved by the power of water, communities around the world ravaged by floods, or waterways polluted by poorly managed run-off, it's evident that managing and protecting our natural waterways is serious business.

Our drainage and river systems experts are up-to-date on the latest practices, modeling software, and federal, state, and local regulations to help address your drainage issues, protect your rivers and streams, and plan for all of your water-management needs.

List of Services
  • Bridge and culvert hydraulic design
  • Scour mitigation design
  • Coastal engineering
  • Highway drainage design
  • Fish passage design
  • Erosion control
  • Stream restoration
  • Bank stability and restoration
  • Storm drainage planning and design
  • Hydrologic and hydraulic modeling
  • Floodplain modeling, mapping, and permitting
  • Precipitation analyses
  • Permitting and regulatory compliance support
  • Stormwater criteria manuals
  • Water quality treatment
  • Flow measurement
  • 1D & 2D river modeling
  • Geographic Information System (GIS) inventorying and mapping
  • Stormwater Pollution Prevention Plan (SWPPP) preparation and compliance monitoring
  • Hydraulic structure design
Team Lead
Greg Gabel, PE, CFM


Dams and Irrigation

We don't just dabble in dams and irrigation—we are known as experts in our field. Understanding that lives and property are at stake with nearly every project, we take this responsibility very seriously. Safety and performance are our top priorities when it comes to inspection and design. We are knowledgeable about the latest design methods, and federal, state, and local regulations pertaining to design and hazard assessment. Our mission is to give you and your stakeholders peace of mind about your project.

List of Services
  • 2D inundation modeling
  • Breach analyses
  • Canal inspections
  • Condition assessments
  • Emergency action plan development
  • Embankment/drain design
  • Geographic Information System (GIS) mapping and development
  • Hazard classification
  • Hydrological studies
  • Initial fill plans
  • Inspections and dam reviews
  • Monitoring systems and plans
  • Operation and maintenance manuals
  • Outlet works design
  • Rehabilitation priority ranking/design
  • Risk evaluation/prioritization
  • Spillway design
  • Structural evaluations
  • Construction administration
  • Geologic/geotechnical investigations
Team Lead
Jay Thom, PE


Lovell Water System Tank

Water Supply and Wastewater

We know how to stretch your dollars and provide a complete approach to water and wastewater systems. For drinking water projects, our priorities are adequate pressure, high quality, and an easily maintained system. Meanwhile, we believe good wastewater systems are ones that you only notice during planned maintenance and construction projects.

List of Services
  • Master plans
  • Water transmission and distribution systems
  • Hydraulic modeling and transient analysis
  • Combined sewer separation
  • Sewer collection systems
  • Capital improvement plans
  • Grant applications
  • Lift stations
  • Pump stations
  • Treated water storage
  • Trenchless pipe rehabilitation
  • 3D facility modeling and design
  • Drinking water treatment
  • Wastewater treatment and reuse
  • Membrane treatment technologies
Team Lead
Kevin Johnson, PE, BCEE