Online Water Maps Gallery - PDF Maps

Presented here is a collection of static maps that show various water resources information on a county-wide map. Please visit Tips, Sources, Access Use and Constraints for important information about the data presented on the maps. The following PDF maps can be viewed, downloaded or printed:

Watershed Maps and Hydrologic Unit Code Maps

• Watersheds of Chester County (with Municipal Boundaries) or (11x17)
• Map of 8-Digit Hydrologic Unit Codes (HUC-8) in Chester County
  Useful map to determine the 8-digit HUC code for your watershed. Among other uses, this will help you find local impaired streams listed in the PADEP 2014 Integrated Report.
• Map of 12-Digit Hydrologic Unit Codes (HUC-12) in Chester County
  Useful map that shows the boundaries of 8,10 and 12-digit HUC codes with labels showing the HUC-12 codes of Chester County watersheds. 12-digit HUC codes are the smallest order watersheds identified under this hierarchical system.

Bathymetric Map of Chambers Lake at Hibernia County Park

• View this map to see the depths and contours of Chambers Lake to see how deep or shallow the lake is (2 foot intervals).

Stormwater and Pollution Reduction Maps

MS4 Stormwater Permits

• Chester County NPDES Phase II (MS4) Municipalities
• 2000 and 2010 Urbanized Areas

Impaired Waters

 Current Impaired Waters Maps

• Chester County 2020 Impaired Waters Map Series

 Archived Impaired Waters Maps

• Chester County 2018 Impaired Waters Map Series
• Chester County 2016 Impaired Waters Map Series
• Chester County 2014 Impaired Waters Map Series
• Chester County 2012 Impaired Waters Map Series
• Chester County 2010 Impaired Waters Map Series

Total Maximum Daily Loads (TMDLs)

 County Based Maps

• Chester County Watersheds with Total Maximum Daily Load(s) for Various Pollutants (11x17)

 Chesapeake Bay TMDL

• Map of Municipalities of Chester County Potentially Affected by Chesapeake Bay TMDL

 Christina River Basin TMDL General Mapping

• CB-1-2015. Subbasins from HSPF Model and Christina Basin Municipalities
• CB-2-2015. Subbasins with Nutrient Load Allocations
• CB-3-2015. Municipalities with Nutrient Load Allocations
• CB-4-2015. Christina River Basin Subbasins with Load Reduction Requirements

 Christina River Basin: CTIP Implementation Plan (Plan Development Maps)

• CP-1. Christina Plan Participants and NPDES Phase II (MS4) Status (as of February 17, 2011)
• CP-2. 1998 Christina Sediment TMDL Impaired Streams and 2005 Urbanized Areas
• CP-3. PADEP 2010 Impaired Streams - Siltation and Suspended Solids
• CP-4. 2010 PADEP Impaired Streams - All Causes
• CP-5. 1998 Christina Sediment TMDL Impaired Streams and TMDL Subbasins
  
  Maps - Handouts from May 2011 meeting
• Flow related stream impairments (2010) with TMDL subbasins and Urbanized Area
• Sediment related stream impairments (2010) with TMDL subbasins and Urbanized Area
• Nutrient related stream impairments (2010) with TMDL subbasins and Urbanized Area

 Protected Use Maps

• Chester County, PA Waters - Protected Uses Map 1 - Special Protection Waters (EV/HQ)
  (11x17, color, 6.5MB)

• Chester County, PA Waters - Protected Uses Map 2 - Aquatic Life Fishery Designations
  (11x17, color, 6.1MB)

Flood and Stormwater Management Maps

• Chester County, PA - PA Act 167 Stormwater Management Planning
• CCWRA Regional Flood Control and Reservoir Project Locations
• Planning for Dam Safety

Hydrologic Conditions Maps

• Volunteer Rainfall Observer Network
• Observation Well Monitoring Network
• Chester County Water Table Maps