Green Infrastructure Approaches to Control of Combined Sewer Overflows


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by Rajesh Rajan, CDM, 2 Penn Center, 1500 JFK Blvd. 624, Philadelphia, PA 19102,
Marc Cammarata, P.E., Philadelphia Water Department, Philadelphia, PA,
James T. Smullen, P.E., Ph.D., CDM, Raritan Plaza I, Raritan Center, Edison, NJ 08818,
Dwayne Myers, P.E., CDM, 2 Penn Center, 1500 JFK Blvd. 624, Philadelphia, PA 19102,
Gary D. Martens, CDM, 2 Penn Center, 1500 JFK Blvd. 624, Philadelphia, PA 19102,
Shannon K. Reynolds, CDM, 2 Penn Center, 1500 JFK Blvd. 624, Philadelphia, PA 19102,



Document Type: Proceeding Paper

Part of: Low Impact Development for Urban Ecosystem and Habitat Protection:

Abstract: The Philadelphia Water Department is committed to a balanced land-water-infrastructure approach to achieve watershed management and combined sewer overflow (CSO) control goals. This method includes infrastructure-based approaches where appropriate, but also includes a range of land-based stormwater management techniques and physical rehabilitation of aquatic habitats. The goal is to restore the water environment in the City of Philadelphia and the surrounding areas, while achieving regulatory compliance in a cost-effective manner. This paper explains the hydrologic and hydraulic modeling used to design the approach and quantifies potential benefits of stormwater management and green infrastructure in one of the three highly urbanized drainage districts in Philadelphia. The results indicate that a significant reduction in stormwater volume can be achieved by requiring stormwater controls for redevelopment and through implementation on public lands.

Subject Headings: Sustainable development | Stormwater management | Combined sewers | Overflow | Hydrologic models | Rehabilitation | Watersheds | Management methods | Pennsylvania | Philadelphia | North America | United States

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