- Green Infrastructure Concept Design
We are developing a green infrastructure concept plan for Schenley Park for the Pittsburgh Parks Conservancy, in Pittsburgh, Pennsylvania. The project will aid in stormwater, water quality, transportation, and land use planning efforts. The 300-acre Schenley Park was donated by Mary Schenley in the 1890s. The park is within the 3.7-square-mile Four-Mile Run Watershed, which contains Junction Hollow, Forbes Run, Panther Hollow (384 acres), and Saline Run subwatersheds. The 177 acres of the Panther Hollow watershed currently drains to Panther Hollow Lake within Schenley Park, which is eutrophic. Our green infrastructure concept plan, developed in conjunction with Phronesis Design, focused on the parks focal point: Panther Hollow Lake. The concept plan includes watershed restoration, green infrastructure implementation, ecological restoration, and, as a result, water quality improvements.
Several other projects and initiatives are underway in the area including the development of a long-term control plan to address combined sewer overflows (CSOs) in the area, flooding as a result of undersized combined sewers, the Almono development along the Allgheny, Monongahela and the Ohio rivers, and transportation connectivity between Almono and the Carnegie Mellon University campus.
Previous studies considered a stream daylighting study for flows from the Panther Hallow watershed, restoring the historic channel that would run along Boundary Street/Panther Hallow Trail. However, the previous studies did not consider the fully developed watershed in channel sizing or transportation connectivity, which are key components of the site and restoration. The previous studies also did not include considerations of providing flood benefits to the areas downstream of Panther Hollow. The concept plan included information gathered through research on historical land use practices of Schenley Park and the surrounding areas, historical rainfall analysis, watershed analysis and green infrastructure sizing. The plan included preliminary design of green infrastructure, throughout Panther Hollow and the lake, including estimates of stormwater capture and conveyance. Considerations related the transportation and flooding downstream were incorporated in the preliminary concept plan.
The concept design alternatives consider a range of potential green infrastructure improvements to address the full range of improvement needs. The recommended concept design is a watershed approach that considers existing and future stormwater improvements. The improvements are recommended to be phased to maximize the initial benefit to address park improvements while planning for the future.
- Site evaluation
- Green infrastructure
- Stakeholder engagement concept
- On-site walk through with park’s ecologist to identify key ecological issues
- Collaboration with other city initiatives
- BMP systems approach that will integrate into park setting