Chester County Water Resources Authority


Chester County Water Resources Authority is open to the public for all regular services and programs, though there will be times when our staff will be working remotely or in the field. We encourage you to look for answers to your questions and concerns online, or send us an email at [email protected]. Should an in-person meeting be required, we urge you to contact us by phone (610-344-5400) or email to schedule an appointment. We will respond as soon as possible.

Walking Tours of Hibernia Dam - July '23

Learn About Hibernia Dam and Chambers Lake

Since 1996, Hibernia Dam and Chambers Lake have been providing recreation, water supply and flood protection for residents in Chester County.

Join the Chester County Water Resources Authority for a 50-minute walking tour of Hibernia Dam and learn about the history of the dam, how the dam functions, recent improvements and how and when releases are made.

In order to provide a safe and engaging tour, registration is required and we are limiting each of the tours to 25 people. More information, including how to register for one of these free tours, is available here.


Walking tours are scheduled for:

  • Thursday, July 13 at 3:30pm,
  • Thursday, July 13 at 6:00pm,
  • Saturday, July 15 at 9:00am, and
  • Saturday, July 15 at 10:30am.

Chester County Commissioners' Adopt 2022 County-wide Stormwater Management Model Ordinance

The 90-day period for Pennsylvania Department of Environmental Protection (PADEP) to review the final 2022 County-wide Act 167 Stormwater Management Model Ordinance ended on November 24, 2022. Under the Pennsylvania Stormwater Management Act (PA Act 167), all Chester County municipalities, both MS4 and non-MS4 permittees, are required to adopt stormwater ordinances consistent with the County's Model Ordinance by May 31, 2023. 

The updated Model Ordinance, summary of changes table, Matrix of Minimum Mandatory Standards, and other resources are available at Any questions about the updated Model Ordinance can be submitted to [email protected]

PDFs and recordings from two workshops CCWRA hosted in May 2022 to assist municipalities with updating their stormwater ordinances are available here

Our Programs

Water Resources Plans and Updates Underway

To ensure that our residents and businesses are equipped to respond to evolving water resources needs, Chester County is leading updates to the Watersheds Plan and the County-wide Stormwater Management Plan.

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Water Quality in Chester County

Clean water in our groundwater aquifers, streams and lakes is critical to long-term healthy communities.  Learn about PADEP's assessment program, resources from MS4 municipalities, and information about TMDL pollution reduction programs.

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Flooding and Stormwater Reduction

CCWRA provides information on FEMA floodplains as well as real time stream flood monitoring through a partnership with USGS. The Authority also provides flood protection in the Brandywine Creek watershed through the operation of four flood control dams, and has information on preparing for flooding emergencies.

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Maps, Reports and Data

Find both interactive and print-ready maps on water quality conditions, floodplains, and other key water resources components, as well as reports on water conditions in the County, and various factsheets.

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Get Involved Local Watershed Groups

Chester County is fortunate to have watershed and conservation organizations that are active with on-the-ground improvement projects, outreach and community education.

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Sustainable Water Supply Management

CCWRA assists with sustainable water management by providing reservoir water supplies, through planned and managed water releases from Chambers Lake Reservoir. Learn about our reservoir management as well as water conservation tips.

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