Chartiers Creek Study

Allegheny and Washington Counties in western Pennsylvania experience recurring, out-of-bank flooding along Chartiers Creek, its tributaries, and backwatering effects from the Ohio River at the confluence. Out-of-bank flooding in the watershed over the past 50 years has been exacerbated by changing hydrologic conditions, meteorological conditions, land development patterns, and increasing impervious surface coverage. These factors have resulted in increased economic damages and impacts to life-safety throughout the watershed over the past 50 years with increasing frequency since 2004.

Note: This description will be updated as the study progresses.

This study is authorized under the Water Resources Development Act (WRDA) 2022, Section 8201(78), with appropriations through the Disaster Relief Supplemental Appropriations Act (DRSAA) 25. The study is 100% federally funded.

Federal Partner: U.S. Army Corps of Engineers, Pittsburgh District
Non-Federal Sponsor: Southwestern Pennsylvania Commission (SPC)
Feasibility Cost-Sharing Agreement (FCSA): Executed 14 January 2026

This is a feasibility study being conducted under the RAPID Planning framework. Study milestones and timeline information will be updated as the study progresses.

Expected Completion: 2028

Graphic showing RAPID Planning milestones to be inserted here

National Environmental Policy Act (NEPA) Determination: To Be Determined

Environmental documentation will be prepared in accordance with NEPA requirements and made available for public review as the study progresses.

Public meeting information will be posted here as meetings are scheduled. Check back regularly for updates.

Meeting Schedule: Public engagement events are scheduled to begin in the coming weeks.

How to Participate:

• Attend in-person public meetings (locations and dates TBD)
• Join virtual meetings online (links will be posted here)
• Submit comments through our online feedback platform
• Contact the study team directly

Official public notices will be posted here when available.

Draft feasibility reports and technical appendices will be posted here for public review as they become available.

How to Submit Comments:

• GIS Platform: [Link to be added] - Use our interactive map to provide location-specific feedback
• Feedback Form: [Link to be added] - Submit general comments and questions
• Email: Contact the study manager (see below)
• Mail: U.S. Army Corps of Engineers, Pittsburgh District, Planning Division, William S. Moorhead Federal Building, 1000 Liberty Avenue 22nd Floor, Pittsburgh, PA 15222-4186

Environmental Assessment or Environmental Impact Statement documents will be posted here when available

Technical appendices and supporting documentation will be posted here when available

A feasibility study evaluates potential solutions to address identified problems, assesses their technical and economic viability, and recommends a plan for implementation if federally justified.

RAPID Planning is a U.S. Army Corps of Engineers framework designed to expedite the planning process while maintaining quality and environmental compliance.

The study is expected to be completed in 2028. Updates on study progress and milestones will be posted on this page.

• Visit this webpage regularly for updates
• Attend public meetings
• Sign up for email notifications (contact information below)
• Follow the Pittsburgh District on social media

If a recommended plan is identified and receives authorization and appropriation from Congress, the project would move to the design and implementation phase.

See the contact information section below.