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Pennsylvania's Long-Term Surface-Water Quality Network

Monitoring the health of Pennsylvania’s rivers, streams, and lakes since the 1950s

Web Tool

Flood Data Collection in Pennsylvania

Site Selection Data for the Development of a Rapid Deployment Network

Launch Web Tool

Philadelphia Area Groundwater Level Network

Now part of Pennsylvania Groundwater Watch

Launch Web Tool

Pennsylvania Groundwater Watch

Interactive map of groundwater levels at 108 sites in Adams, Chester, Montgomery, Philadelphia, and Pike Counties

Launch Web Tool

Mapping Radon in Pennsylvania's Groundwater

Web Tool

Pennsylvania Groundwater Quality Monitoring Network

in cooperation with the Pennsylvania Department of Environmental Protection

Web Tool

Pennsylvania Real-Time Water Quality

Web Tool

Web Tools provide interactive access to USGS information about Pennsylvania's water resources.

As of 2023, Philadelphia Area Groundwater Level Network is part of Pennsylvania Groundwater Watch. 

National Water Dashboard

Screen shot of National Water Dashboard showing map of Pennsylvania

View over 13,000 USGS real-time stream, lake, reservoir, precipitation, water quality & groundwater stations in context with current weather & hazard conditions.

Water Dashboard

Current Conditions

Map of NWIS streamflow conditions in Pennsylvania

National Water Information System

Streamflow || Groundwater || Water Quality 

Current Conditions

Hydrologic Toolbox

WaterWatch
Filter Total Items: 25

National Water Dashboard (NWD) National Water Dashboard (NWD)

The National Water Dashboard (NWD) is a mobile, interactive tool that provides real-time information on water levels, weather, and flood forecasts - all in one place on a computer, smartphone, or other mobile device. The NWD presents real-time stream, lake and reservoir, precipitation, and groundwater data from more than 13,500 USGS observation stations across the country.
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Water Resources Mission Area, Alaska Science Center, Arizona Water Science Center, California Water Science Center, Caribbean-Florida Water Science Center (CFWSC), Central Midwest Water Science Center, Colorado Water Science Center, Dakota Water Science Center, Idaho Water Science Center, Lower Mississippi-Gulf Water Science Center, Maryland-Delaware-D.C. Water Science Center, Nevada Water Science Center, New England Water Science Center, New Jersey Water Science Center, New Mexico Water Science Center, New York Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, Pacific Islands Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC), Upper Midwest Water Science Center, Utah Water Science Center, Virginia and West Virginia Water Science Center, Washington Water Science Center, Wyoming-Montana Water Science Center, Hydrologic Instrumentation Facility (HIF), Office of Risk and Resilience, Hurricane Isaias, Hurricanes, Saline Lake Ecosystems Integrated Water Availability Assessment

Pennsylvania Hydrologic Trends Dashboard Pennsylvania Hydrologic Trends Dashboard

This dashboard was created by the U.S. Geological Survey (USGS) in cooperation with the Pennsylvania Department of Conservation and Natural Resources (PA DCNR), Bureau of Geological Survey, to display long-term trends in streamflow, baseflow, runoff, and baseflow index (BFI) at select streamgages across Pennsylvania.
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Pennsylvania Water Science Center

Water Data for the Nation (WDFN) Water Data for the Nation (WDFN)

Water Data for the Nation (WDFN) is the home for USGS’s modernization of public delivery of water data.
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Water Resources Mission Area, Alaska Science Center, Arizona Water Science Center, California Water Science Center, Caribbean-Florida Water Science Center (CFWSC), Central Midwest Water Science Center, Central Plains Water Science Center, Colorado Water Science Center, Dakota Water Science Center, Idaho Water Science Center, Lower Mississippi-Gulf Water Science Center, Maryland-Delaware-D.C. Water Science Center, Nevada Water Science Center, New England Water Science Center, New Jersey Water Science Center, New Mexico Water Science Center, New York Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, Pacific Islands Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC), Upper Midwest Water Science Center, Utah Water Science Center, Virginia and West Virginia Water Science Center, Washington Water Science Center, Wyoming-Montana Water Science Center, Hydrologic Instrumentation Facility (HIF)

USGS Water Data APIs USGS Water Data APIs

This site is the home for modernized access to USGS water data in machine-readable formats via REST APIs, a common type of web service programs use to search and download data. These services provide USGS water data, ranging from continuous measurements of streamflow to information about individual USGS sites and more.
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Water Resources Mission Area, Alaska Science Center, Arizona Water Science Center, California Water Science Center, Caribbean-Florida Water Science Center (CFWSC), Central Midwest Water Science Center, Central Plains Water Science Center, Colorado Water Science Center, Dakota Water Science Center, Idaho Water Science Center, Lower Mississippi-Gulf Water Science Center, Maryland-Delaware-D.C. Water Science Center, Nevada Water Science Center, New England Water Science Center, New Jersey Water Science Center, New Mexico Water Science Center, New York Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, Pacific Islands Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC), Upper Midwest Water Science Center, Utah Water Science Center, Virginia and West Virginia Water Science Center, Washington Water Science Center, Wyoming-Montana Water Science Center

Water Data Blog Water Data Blog

Water information is fundamental to national and local economic well-being, protection of life and property, and effective management of the Nation’s water resources. The Water Data Blog posts highlight water data developments, data, and applications.
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Water Resources Mission Area, Water Availability and Use Science Program, Alaska Science Center, Arizona Water Science Center, California Water Science Center, Caribbean-Florida Water Science Center (CFWSC), Central Midwest Water Science Center, Central Plains Water Science Center, Colorado Water Science Center, Dakota Water Science Center, Idaho Water Science Center, Lower Mississippi-Gulf Water Science Center, Maryland-Delaware-D.C. Water Science Center, Nevada Water Science Center, New England Water Science Center, New Jersey Water Science Center, New Mexico Water Science Center, New York Water Science Center, Ohio-Kentucky-Indiana Water Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, Pacific Islands Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC), Upper Midwest Water Science Center, Utah Water Science Center, Virginia and West Virginia Water Science Center, Washington Water Science Center, Wyoming-Montana Water Science Center

Modeling chloride concentrations in Chester County, PA Modeling chloride concentrations in Chester County, PA

This geonarrative describes the chloride monitoring and modeling conducted as part of the Chester County - U.S. Geological Survey Cooperative Water Resources Program.
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Pennsylvania Water Science Center

York County Water Quality Dashboard York County Water Quality Dashboard

Since 2019, the USGS Pennsylvania Water Science Center has been cooperating with York County, Pennsylvania to implement in-stream monitoring and water-quality sampling to compute, in real time, the concentration, loads, and yields of total nitrogen, total phosphorus, and suspended sediment for 6 major watersheds in the County.
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Chesapeake Bay Activities, Pennsylvania Water Science Center

Pennsylvania's Long-Term Surface-Water Quality Network Pennsylvania's Long-Term Surface-Water Quality Network

USGS, in cooperation with the Pennsylvania Department of Environmental Protection (PaDEP), has released a geonarrative detailing the sampling of a network of surface water sites across Pennsylvania.
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Pennsylvania Water Science Center

Using Continuous Water Quality to Guide Conservation Efforts Using Continuous Water Quality to Guide Conservation Efforts

This geonarrative describes USGS data collection and analysis efforts to assess water-quality conditions and measure the effects of conservation practices in the Chiques and Swatara Creek watersheds in central Pennsylvania, both within the Chesapeake Bay watershed.
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Chesapeake Bay Activities, Pennsylvania Water Science Center

Stream conditions monitoring network in Chester County, PA Stream conditions monitoring network in Chester County, PA

This geonarrative describes the stream biological monitoring conducted as part of the Chester County - U.S. Geological Survey Cooperative Water Resources Program.
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Pennsylvania Water Science Center

Monitoring for Pesticides in Pennsylvania's Groundwater Monitoring for Pesticides in Pennsylvania's Groundwater

This geonarrative explains and explores the results of more than 20 years of sampling. Methods for sampling and pesticide use in Pennsylvania are also described.
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Pennsylvania Water Science Center

Philadelphia Water Resources Monitoring Philadelphia Water Resources Monitoring

The Philadelphia Water Department (PWD) and USGS have been working together to create and expand the water-quality monitoring network for Philadelphia. Data from these gaging stations will allow PWD scientists and engineers to monitor spatial and temporal water quality/quantity trends in support of watershed restoration initiatives occurring in Philadelphia.
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Pennsylvania Water Science Center
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