Stormwater Management

WGI stormwater and flooding experts provide engineered solutions that cost-efficiently and sustainably manage and mitigate risk. WGI’s highly qualified team addresses complex stormwater quantity and quality, sedimentation, drainage, and flood-control issues. Our Certified Floodplain Managers provide floodplain management from simple flood map revisions to complex floodplain modeling, including bridges, culverts, and 1D and 2D modeling.

Offering clients the latest models and design techniques, our experts ensure cost-effective and resilient design solutions.

With proven expertise in environmental regulatory processes and a sound understanding of the natural systems impacting natural water resources, WGI professionals deliver quality projects within the requirements of regulatory and permitting constraints.

Stormwater Services

Transportation Drainage (Rural Roadways to Complex Interstate Systems)
Bridge, Culvert, Canal, Levees, Dams, and Reservoirs Analysis and Design
Master, Regional, and Joint-Use Stormwater Management Plans and Designs
Stormwater Quality Treatment System; NPDES and TMDL Design and Permitting
Canal, Channel, Storm Sewer, Pump, and Retention/Detention Facilities Design
Stream-Restoration Watershed, Channel, and Stream-Bank Stability Studies
Watershed Master Planning; Hydrologic and Hydraulic Modeling, Evaluation, and Restoration
Wetland Hydroperiod Analysis
FEMA Planning, Mapping, Post-Flood Assessments, FISs, PMRs, CLOMRs, and LOMRs
Floodplain and Floodway Engineering including Encroachment Analysis for Flood Insurance Studies
Riverine and Tidal Flood Studies, including No-Rise Certifications
Municipal, State, Regional, and Federal Permitting

Complex Issues

WGI has the talent to provide the best design solutions regardless of your project’s complexity.

Latest Technology

Our associates are equipped with the latest stormwater and floodplain modeling tools.

Regulatory Expertise

With proven expertise in permitting and environmental regulatory processes, WGI has worked with federal, regional, state, and municipal governments to deliver water resources projects across the country.