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Stormwater Best Management Practices in an Ultra-Urban Setting: Selection and Monitoring

Design Type Description of Cross-Section View
Design No. 1: Detention Facility Flat bottom. Shows level for 2 yr Detention and 10 yr Detention
Design No. 2: Retention Facility (Wet Pond) Bottom dips near embankment to create permanent pool
Design No. 3: Extended Detention Dry Facility Flat bottom. Embankment is higher than intake end
Design No. 4: Extended Detention Wet Facility Flat bottom. Shows level for Permanent Pool and Extended Detention
Design No. 5: Shallow Marsh/Constructed Wetland Bottom is raised in middle but not above the Permanent Pool line

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United States Department of Transportation - Federal Highway Administration