Median Stormwater Management Practices

Review Benefits of Plantings in the ROW

Review benefits of Sidewalk Stormwater Management Practices

Review Key Considerations

Review considerations for Sidewalk Stormwater Management Practices

Review considerations for Roadway Plantings

• Raised medians, whether paved or planted, are more suitable for stormwater management than other types of medians such as barrier medians and painted medians
• Median stormwater management practices should be a minimum of 12 feet in width and consideration should be given for maintenance vehicle access
• Avoid in areas of with high sediment loads or other types of trash and debris

• In areas where sufficient drainage can be directed to the median

Review the Plant Finder for DEP approved green infrastructure plantings and other plants that perform well in the right-of-way. All selections must be made based on specific site considerations

Review Key Considerations

Review design guidance for Sidewalk Stormwater Management Practices

Review design guidance for Roadway Plantings

• Similar to Stormwater Greenstreets, median stormwater management practices require site-specific design and review
• In locations where the roadway is pitched towards the median, curb cuts may be used to divert stormwater to the median stormwater management practice
• For roadways that pitch away from the median, stormwater can be diverted to the median stormwater management practice through the installation of new or modified catch basins and subsurface piping, with DEP approval. Designers should consider the size of the impervious area that will be diverted to the practice as part of the cost analysis for this type of treatment
• Large median stormwater management practices may be split into sections and hydraulically connected using underground pipes to avoid impacting surface programming or landscaping
• For vegetated practices, a minimum ponding depth of 3 inches at the center of the median, with a maximum 3:1 side slope around the edges, is recommended
• Consider permeable pavement wherever safe and feasible. Review Permeable Interlocking Concrete Paver and Precast Porous Concrete Panel