Operating, Maintaining, and Monitoring an Urban Stormwater Bio-retention

Facility

Erik Haniman

Water Resources Engineer

Philadelphia Water Department

Fountain

SpringOutfall Gulley

Water flows towards Lincoln Drive & the Monoshone

Rittenhouse StWissahickon Ave

Wissahickon Ave

Gulley

Streets outfallCollapsed & abandonedstreets outfall

Monitoring

Saylor Grove Stormwater Treatment Wetland Performance Statistics

• Intercepts 73% of the watershed’s annual stormwater runoff– 25.4 of 34.8 million gallons

• 81 Distinct Rainfall events in Typical Year– 75% (61) w/ Intensity < 0.50 in/hr– 88% (71) w/ Intensity < 1.00 in/hr

• Peak Flow Reduction Peformance– 50% or greater reduction in 78% of Rainfall

events

Operations & Maintainance

4-10-073-19-087-15-0910-14-0911-9-093-1-104-23-106-9-107-27-105/27/11

Moving Forward !

Cathedral Run Bio‐Retention Basin Pre‐Construction

Cathedral Run Bio‐Retention Basin

Cathedral Run Bio‐Retention Basin

Cathedral Run Bio‐Retention Basin

Cathedral Run Bio‐Retention Basin – In Construction

Wises Mill Bio‐Retention Basin & Stream Restoration –

Pre‐construction

Wises Mill Bio‐Retention Basin

Wises Mill Bio‐Retention Basin

Wises Mill Bio‐Retention Basin – In Construction