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.
Today's Water Levels

What's New

  • Bathymetric Map of Chambers Lake at Hibernia County Park
    • A bathymetric map has been prepared for Chambers Lake at Hibernia County Park. The map illustrates the depth and shape of the underwater terrain of the lake bed of Chambers Lake, which is a 90-acre, 384 million gallon water supply reservoir and regional flood control facility of the Chester County Water Resources Authority.
  • New USGS Report on Chester County Trends Now Available
  • Drought indicators for Chester County return to normal as of 5/16/2017  
    • PA DEP first issued a drought watch for Chester County on 9/6/2016 that was sustained until 5/16/2017. 
    • 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.
  • 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 
    • FEMA announced that the updates to the floodplain mapping will become effective September 292017.
    • 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).
    • 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. The new mapping will be incorporated into ChescoViews in mid-May 2017.
    • You can also download preliminary static maps and database from the FEMA Map Service Center website (search by address and then click on "show all products"). Only some flood zones in Chester County were revised. Consult the Municipal Index (link above).
    • 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 - SEPTEMBER 29, 2017. 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 from Chester County Water Resources Authority at 610-344-5400 or with any general questions.
    • Chester County property owners should consult the FEMA Map Service Center and the interactive map that contains 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.
  • Chester County Master Watershed Stewards 2017 
    • Master Watershed Stewards are local volunteers who received extensive training on watershed science and management. Upon completion, these apprentices each provide 50 hours of service 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". This program is co-sponsored by Penn State Extenstion, Chester County Conservation District and Chester County Water Resources Authority.
  • 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

October 10, 2017     Save-the-Date
VUSP PA Stormwater Management Symposium: Municipal Workshop
More details available as the date nears. 

October 11 and 12, 2017     Save-the-Date
VUSP PA Stormwater Management Symposium
More details available as the date nears. 

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).