Install medians to strategically hold and/or convey stormwater

Install medians to strategically hold and/or convey stormwater
Hazards
Assets
Measure Type
Gray Engineering vs Nature Based Solutions

Details

Implement depressed medians (a ditch/swale between divided roadways) to hold stormwater and raised medians (a curbed section that typically occupies the center of the roadway) to convey stormwater away from roadway.

Capital Cost

Moderate

Operations & Maintenance

Low

Effectiveness

Moderate/High – improved stormwater collection and flood control reduces damage to roadways

Flexibility

Moderate – it is generally cost-prohibitive to modify engineered infrastructure once constructed; however, smaller scale projects may have greater flexibility and lower retrofit costs

Barriers to Implementation

Cost; potential downstream impacts

Equity

Ensure that drainage conveyance does not cause flooding to equity areas

References