Four Mile Run Stormwater Project

In Planning Stormwater

The Four Mile Run Stormwater Project encompasses Schenley Park and several Pittsburgh neighborhoods including Garfield, Hazelwood, Oakland, and Squirrel Hill. This project will capture and route stormwater through a natural channel that will follow the path of the historic streams that formed Four Mile Run from Panther Hollow Lake to the Monongahela River. It will help to reduce combined sewer overflows, basement backups, and neighborhood flooding.

Progress & Status

90%
Design Complete

Panther Hollow Lake: Stormwater improvements to Panther Hollow Lake will enable us to manage the depth of the lake and control the volume of water entering the combined sewer system. 

Junction Hollow: Stormwater improvements will follow the path of the former Junction Hollow Stream. This portion of the project will channel rainwater, restore streambanks, and plant native and climate tolerant vegetation. 

Connection to the River: A deep gravity pipe will be installed to convey stormwater from Schenley Park and the Run Neighborhood to the Monongahela River. 

Project Costs: The Four Mile Run Stormwater project uses the most cost-effective strategies to minimize flooding. The total project cost is approximately $36.1 million and includes the following: 

Project Component Cost
Design, Easement, Permitting, and Modeling Fees $7.5 million
Early Action Projects $537,000
M-29 Outfall Project $3.6 million
Large Diameter Water Main Relocation $7 million
Stream and Panther Hollow Lake and Dam $3 million
Stormwater Pipeline $11 million
Construction Management and Inspection $2.5 million
Future Maintenance and Operation $1 million

 

Community Meetings

Additional Information

Detailed Project Schedule

Project Phase Status Construction Expected
Early Action Projects: Overlook Drive and Bridle Trail Completed December 2019 - August 2020
M-29 Outfall Project In Design Spring 2021 - Fall 2021
Large Diameter Water Main Relocation In Design Fall 2021 - Fall 2022
Stormwater Phase 1: Mon River to Saline Street In Design Q4 2021
Stormwater Phase 2: Boundary Street to Soccer Field In Design Q3 2022
Stormwater Phase 3: Stream Daylighting In Design Q4 2022
Stormwater Phase 4: Connect Panther Hollow In Design Q1 2023
Stormwater Phase 5: Restoration In Design Q2 - Q3 2023

Locations & Schedule

Start Date: Design Started: May 2018. Construction Expected: Summer 2021 (will begin after permits are approved)

Completion Date: Design Completion: Summer 2021. Construction Completion: There are multiple phases to the overall Four Mile Run Stormwater Project. Work will continue for several years.

Map of Four Mile Run showing its boundaries, neighborhoods, and connection to the Monongahela River

Schenley Park
Pittsburgh, PA 15213
United States

Project Contacts

If you have questions, please contact the Project Manager

Senior Group Manager, Stormwater :
Tony Igwe
412-526-1688
tigwe@pgh2o.com

If you have questions, please contact Public Affairs

Senior Manager, Public Affairs :
Rebecca Zito
412-676-6684
rzito@pgh2o.com