What’s the Plan?

PWSA is redesigning and restoring Panther Hollow Lake to a more natural condition. The lake today has an unnatural concrete edge and drains directly into the combined sewer system. The concrete edge will be replaced with natural plantings and the lake will be a part of the Four Mile Run stream system. Water will flow into the lake from Phipps Run and Panther Hollow Run and then from the lake into Four Mile Run. The lake itself could be used to store volumes of water, controlling the volume and velocity of water entering Four Mile Run during major storm events.

How is this being designed?

In order for the lake to function as intended, water quality and upstream volumes must be carefully managed as it enters the lake. Too much sediment carried into the lake can fill the lake bottom, making it shallower and inhibiting a healthy aquatic ecosystem.

  • Wetlands near where Phipps Run and Panther Hollow Run enter the lake can help to manage water quality and support a natural ecosystem.
  • The concrete edge will be replaced with natural wetland plantings.
  • Existing park features such as a walking trail around the lake would also be restored.
  • Restoration of the lake can be used to leverage other planned improvements from the Parks Masterplan such as improved walking trails or a potential boat house.
  • This project will establish a new stream connection from the lake to the Junction Hollow valley that could also serve as a trail connection for park users.
  • The project team will conduct a design workshop with the public in Early November to discuss this project element.

    Panther Hollow Lake, as seen from the Public Meeting #1 walking tour on 17 September 2018 over the Panther Hollow Bridge in Schenley Park.  The lake features a concrete border, added in the 1950s, that prohibits a natural lake edge ecosystem.  Sediment carried to the lake from Panther Hollow Run and Phipps run has allowed for the formation of a wetland at the eastern end of the lake.  The lake drains directly to the combined sewer through a drain at the western edge of the lake.