Nature-based Stormwater Strategies are an effective and economical strategy to reduce flooding and improve water quality by mimicking natural water flow to vegetated stormwater infiltration spaces, reducing long-term maintenance costs of conventional stormwater systems.
An inland highway uses grassed swales to collect and infiltrate runoff, which reduces flooding and discharge to surface waters.
A coastal road uses curb cuts to guide runoff to a roadside infiltration system. Permeable paving on the bike path disconnects runoff and a living shoreline was installed to reduce soundside erosion to protect the roadway.
State DOTs are in the business of maintaining their coastal highways and nature-based solutions should be considered as part of that long-term commitment.-U.S. Department of Transportation Federal Highway Administration
- Federal Highway Administration Resilience Pilots
- Highway 211 & U.S. 17 Bridge (NC)
- Henderson Point Connector – US HWY 90 (MS)
- Blockade Runner Stormwater Retrofit (NC)
- Wrightsville Beach (NC)
- Nature-Based Solutions for Coastal Highway Resilience: An Implementation Guide (2019)
- Engineering with Nature Strategic Plan 2018-2023 (USACE)
- White Paper: Nature-Based Solutions Coastal Highway Resilience (2018)
- Designing for Environmental Stewardship in Construction & Maintenance
- Storm E-Z, NC DEQ
This spreadsheet calculates stormwater runoff based on proposed land use practices and streamlines the stormwater permit application.
- Stormwater Management Model (SWMM), EPA
This tool models how changes in watershed management may affect stormwater runoff.
- Water Conservation Dashboard, ESRI
An ArcGIS Tool for water utilities that can show stormwater control measures and the effectiveness of water conservation efforts.
- Stormwater Control Measure Credit Document, NCDEQ
A guidance document to determine the reduction value for SCMs in North Carolina
Learn about other work groups:
Contact: Lauren Kolodij, Deputy Director – email@example.com 252-393-8185