CONGRESSIONAL DISTRICTS: PA-4
APPROPRIATION / PHASE: Construction, General
BUSINESS PROGRAM: Environmental Infrastructure
AUTHORITY: Section 566 of the Water Resources Development Act (WRDA) of 1996, as amended.
DESCRIPTION: Under authority of Section 566 of the Water Resources Development Act of 1996, as amended, the U.S. Army Corps of Engineers (Corps) will provided design and construction assistance to Abington Township, Montgomery County to address environmental infrastructure improvement opportunities throughout the community. To the maximum extent possible, the Corps will utilize existing information provided by the community for initiatives already under development. Initial efforts on the project involve executing the design and construction agreement with the community outlining the cost share requirements, developing the project management plan, initiating designs and completing an environmental assessment.
The project areas are located in Abington Township, Pennsylvania adjacent to and along Sandy Run Creek. Sandy Run Creek, part of the Wissahickon Creek Watershed, is a stream system adversely affected by development and land use practices over the past century. Due to high levels of impervious surfaces throughout the watershed, the creek responds quickly during wet weather events; increases in stream flow and erosive forces occur almost immediately following the onset of storm events. Changes in hydrologic conditions within the watershed have caused severe channel de-stabilization within much of the watershed. The most downstream potential project location, Deal Park, drains an area of approximately 2.64 square miles, of which about 24.8 percent is impervious surface and 92 percent is urban development. The urbanized nature of the watershed causes flash flood conditions with rapid stream flows and increased streambank erosion and degraded stream conditions.
ACTION AT ROYCHESTER PARK: At Roychester Park, opportunities exist to daylight the reach of Sandy Run Creek that is currently below ground and to implement natural stream stabilization methods and native vegetation plantings to reconnect the floodplains and restore riparian and wetland habitat of the above ground reaches of Sandy Run Creek where the stream banks are currently extremely eroded. There is also an opportunity to relocate and protect existing sewer infrastructure as risk from erosional damage.
POTENTIAL ACTION AT GROVE PARK: At Grove Park, opportunities exist to remove the concrete lining on a portion of the stream bed and the gabion baskets lining the stream banks and use natural stream stabilization methods and native vegetation plantings to reconnect the floodplains and restore riparian and wetland habitat of the banks of Sandy Run Creek. The former main stem of Sandy Run Creek within Grove Park is populated by the invasive species multiflora rose (Rosa polyantha), which degrades the existing habitat by competing with native species.
PROJECT GOALS: The purpose of this to provide design and construction assistance for carrying out water related environmental infrastructure and resource protection, including projects for waste water treatment, water supply and surface water resource protection
NON-FEDERAL SPONSOR: Abington Township, Montgomery County, PA