Chester County Water Resources Authority

What We Do

We provide:
  • flood protection, 
  • reservoir water supplies, and
  • water science, information and planning, 
  • to support safe, healthy and prosperous communities that sustain the quality, quantity and biodiversity of the County's water resources.

    What's New

    • PA DEP continues to issue a drought watch for Chester County as of 11/3/2016 
      • PA DEP first issued a drought watch for Chester County on 9/6/2016. Chester County continues to experience low and declining stream flows, groundwater levels and water supply reservoir levels. 
      • A "drought watch declaration" from PA DEP calls for a 5% voluntary reduction of non-essential water use. 
      • To view local data, visit our webpage on Chester County Water Levels
      • To view statewide drought declarations, click here
    • Interactive Online Water Resources Mapping Tools Available
      • The Online Water Maps Gallery provides “self-serve” maps of Chester County’s streams and lakes, watersheds, protected water uses, impairments/pollutants (2014), FEMA floodplains, soils, Urbanized Areas (2000 and 2010), etc. Both PDF maps and interactive map tools are provided, as are links for available GIS data files.
    • New Preliminary FEMA Floodplain Mapping Available 
      • Preliminary issuance of FEMA updated floodplain mapping (portions of Chester County) and updated map products (all of Chester County) was released December 2015. To determine if your municipality has any draft revised floodplains, please consult the Municipal Index (9/11/15).
      • The formal 90-day comment period has ended. All comments submitted are being reviewed by FEMA. 
      • As of 11/16/16 there is a new link (same content) to the preliminary map changes. The interactive map is viewable here: the floodplain boundaries reflect the mapping reviewed during the appeal period and is NOT the final mapping. The current interactive map depicts the changes of the preliminary floodplain boundaries as compared to the currently enforced FEMA floodplain maps. 
      • You can also download preliminary static maps from the FEMA Map Service Center website (search by address and then click on "show all products"). You will also find the FIS and database files Only some flood zones in Chester County were revised. Consult the Municipal Index (link above).
      • FEMA anticipates that the mapping will become effective SEPTEMBER 2017 (previous anticipated date was June 2017). All municipalities in the NFIP program must revise their floodplain ordinance, submit for PA DCED approval, adopt it, and then submit to PA DCED for final FEMA approval  - all steps must completed PRIOR to when the maps become effective. Municipalities will work closely with one-on-one assistance from Leslie Rhoads from PA DCED to ensure their ordinance is compliant. Leslie's contact information: email (highly preferred) or (717) 516 -1630.
      • Contact Dani-Ella Betz at 610-344-5400 or with any general questions.
      • Chester County property owners should consult the preliminary FEMA maps to understand how the mapping of the FEMA floodplains may change. Property owners who may be newly designated in the floodplain may be eligible to receive a discount on their new policy, if purchased prior to the maps going final in 2017.
      • Please consult the latest fact sheet for more information and the tentative timeline.
    • The final PA DEP MS4 Permit was published on June 4, 2016 and will become effective March 16, 2018. Click here for more information.
    • Chester County Master Watershed Stewards 2017 - New Class Forming!
      • This new program, open to Chester County residents, is a project of the Penn State Chester County Master Watershed Stewards and the Delaware County Conservation District and serves to provide local volunteers with extensive once-a-week training. Upon completion, apprentices are required to volunteer 50 hours in the community. If you have a volunteer opportunity that you would like to promote, please contact Liz Alakszay: with the subject line "2017 Master Watershed Training".
    • Today’s Water Levels for Chester County
      • A visual snapshot of current precipitation, groundwater and streamflow conditions for Chester County is presented through a set of color graphs and maps, with links to additional online webpages for more detailed information.
    • Volunteer Opportunity: Participate in the Volunteer Rainfall Observer Network
      • Volunteers are responsible for taking readings of a rain gage daily and after significant precipitation events, manually recording the readings, and submitting the log on a monthly basis by email or postal mail. CCWRA compiles the data for analysis, and the updated results are posted on the CCWRA website. The volunteer is committed to recording - on a daily basis - accurate measurements, and able to consistently participate for years. If you would like to learn more, please contact us at 610-344-5400.

    Upcoming Events

    September 20, 21 (King of Prussia) and 27, 28 (Harrisburg) from 8 AM to 5 PM
    PA DEP MS4 Permit Workshop: Developing Your Pollutant Reduction Plan
    Location: various
    Pre-registration required. Very limited seating. ONE DAY with a cost of $50, including lunch. For more information, click here. This workshop will focus on TMDL and Pollutant Reduction Plan development.

    September 27, 2016 from 8:30 AM to Noon
    2016 Chester County Act 167 Municipal Stormwater Summit
    Location: Wagontown Fire Company Banquet Hall
    All municipalities and their representatives are encouraged to attend (municipal elected officials, staff, engineers and/or planners). Topics will include: Act 167 ordinance implementation (what's working and what is not); preliminary considerations for 2018 MS4 ordinance compliance; and presentations on water quality restoration projects completed or underway by local organizations in Chester County watersheds. Watershed conservation organizations and other stakeholders are welcome to attend. Details will be emailed to the distribution list and posted prior to the event

    Right-To-Know Information

    Click here for the Chester County Water Resources Authority's Right-To-Know information. This is solely for requests to the Chester County Water Resources Authority. Any requests intended for the County of Chester must follow the procedures posted on the County Of Chester's Open Records Law web page (click here).