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Maps

Potential Radon Exposure

Radon Occurrence in Groundwater from 16 Geologic Units in Pennsylvania, 1986–2015, & Potential Radon Exposure from Groundwater and Indoor Air

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Groundwater Recharge

Completed USGS studies provide estimates of groundwater recharge in Pennsylvania and methods for estimating recharge in humid regions.

Map, Data & Methods

USGS Topographic Maps

Use the Map Locator to find Pennsylvania Topo Maps

USGS Map Locator

Maps are vital to displaying and disseminating our data and investigative findings. Our staff work on a diverse range of products built on a foundation of spatial data. We collect environmental data on the landscape and maps provide the geographic reference.

Many of our maps are published in USGS report series. 

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Maps of groundwater quality in Bradford County, Pennsylvania

Drinking water health standards comparison and chemical analysis of groundwater for 72 domestic wells in Bradford County, Pennsylvania (Figure 3)

Selected National and Regional Maps

Bathymetry and capacity of Chambers Lake, Chester County, Pennsylvania

Introduction Chambers Lake is a manmade reservoir on Birch Run, a tributary to West Branch Brandywine Creek in Chester County, Pennsylvania. The lake was created in 1994 after the completion of Multi-Purpose Dam PA-436F (Hibernia Dam), which was built under the Watershed Protection & Flood Control Prevention Act (U.S. Soil Conservation Service, 1991). Hibernia dam is 1,700 feet upstream from the c
By
Water Resources Mission Area, Pennsylvania Water Science Center

Altitude and configuration of the potentiometric surface in the upper White Clay Creek and lower West Branch Brandywine Creek Basins including portions of Penn, London Grove, New Garden, Londonderry, West Marlborough, Highland, and East Fallowfield Townsh

Since 1984, the U.S. Geological Survey (USGS) has been mapping the altitude and configuration of the potentiometric surface in Chester County as part of an ongoing cooperative program to measure and describe the water resources of the county. These maps can be used to determine the general direction of ground-water flow and are frequently referenced by municipalities and developers to evaluate gro
By
Water Resources Mission Area, Pennsylvania Water Science Center

Altitude and configuration of the potentiometric surface in the Lower White Clay Creek and Upper Christina River Basins including portions of Franklin, London Britain, New Garden, and New London Townships, Chester County, Pennsylvania, June through Septem

Since 1984, the U.S. Geological Survey (USGS) has been mapping the altitude and configuration of the potentiometric surface in Chester County as part of an ongoing cooperative program to measure and describe the water resources of the county.  Areas where the potentiometric surface has been mapped are shown on figure 1.  These maps can be used to determine the general direction of ground-water flo
By
Water Resources Mission Area, Pennsylvania Water Science Center

Altitude and configuration of the potentiometric surface in East Nottingham and West Nottingham Townships, Chester County, Pennsylvania, April through June 2004

Since 1984, the U.S. Geological Survey (USGS) has been mapping the altitude and configuration of the potentiometric surface in Chester County as part of an ongoing cooperative program to measure and describe the water resources of the county.  Areas where the potentiometric surface has been mapped are shown on figure 1.  These maps can be used to determine the general direction of ground-water flo
By
Water Resources Mission Area, Pennsylvania Water Science Center