Stormwater Management

We provide comprehensive stormwater engineering services, from stormwater management planning, to combined sewer studies, floodplain management, best management practices, and water quality issues. Our wide range of experience and expertise enable our clients to meet the ever-changing requirements placed on them by the regulatory community while providing innovative, cost-effective solutions.

Our project experience and expertise includes:

Stormwater Services

Regional stormwater management planning
Municipal stormwater drainage planning and facilities design
Municipal stormwater phase II NPDES MS4 permitting
Site stormwater drainage and control facilities design
Stormwater quality modeling
Stormwater runoff studies
CSO studies and design
Development of flood mitigation plans
Floodplain management ordinances
Best Management Practices (BMPs)
Water quality

Stormwater Master Planning

Stormwater management facilities evaluation
Hydraulic modeling and capacity analysis
Capital Improvement Planning (CIP)
Low impact development planning

Stormwater Management Facilities

Detention basins
Storm sewer systems
Water-quality best management practices
Bioretention basins, stormwater wetlands, and enhanced swales
Permeable pavement

Hydrologic and Hydraulic Computer Modeling

HEC-RAS, HEC-HMS, HEC-1, HEC-2, HY-8, and others
TR-55, TR-20, and WSP-2
EPA SWMM and supporting modules
Low impact development design tools

Municipal Stormwater Program Planning

NPDES Phase II MS4 compliance assessments and program planning
Ordinance and resolution drafting
Utility implementation
City-wide impervious area studies
Capital improvement project prioritization
Stormwater utility rate studies
Stormwater pollution prevention plans

Floodplain Management and Estimation of Floodplain Limits

Flood hazard studies
FEMA map revisions (CLOMR, LOMR, LOMA, LOMR-F)
Floodplain management policy development

Dam Safety Analysis

Permitting and design of small dams
Operations and maintenance
Emergency action plans
HEC-RAS, DAMBRK, and FLDWAV dam failure studies

Environmental Restoration and Enhancement

Stream restoration and buffers
Wetland mitigation