USGS Pennsylvania Water Science Center operates about 580 real-time data collection sites acquiring information on surface water, groundwater, water quality, precipitation and ecosystem health. Data, including models, are also published for cooperative monitoring systems and investigative studies.

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Pennsylvania Groundwater Watch

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March 26, 2020

Water Velocity Magnitude and Direction Collected on May 8-9, 2019 at Select Breakwaters in Lake Erie at Presque Isle State Park, Erie, PA Water Velocity Magnitude and Direction Collected on May 8-9, 2019 at Select Breakwaters in Lake Erie at Presque Isle State Park, Erie, PA

Background: Presque Isle State Park (PISP), located in northwestern Pennsylvania, is located on a 3,127 acre peninsula that extends into Lake Erie. Approximately 7 miles long, PISP is a recurving sand spit where the width of the neck is less than 1,000 feet and the center, eastern end exceeds 1 mile. The park boundary extends 500 feet offshore around the perimeter of the peninsula. The...

Pennsylvania Water Science Center

February 25, 2020

Compiled data for groundwater levels, groundwater withdrawals by wells and quarries, and point-source discharges to streams in the vicinity of Willow Grove and Warminster, Bucks and Montgomery Counties, Pennsylvania, for selected years during 1999-2017 Compiled data for groundwater levels, groundwater withdrawals by wells and quarries, and point-source discharges to streams in the vicinity of Willow Grove and Warminster, Bucks and Montgomery Counties, Pennsylvania, for selected years during 1999-2017

This USGS Data Release includes hydrologic data compiled for selected years during the period 1990-2017 to support the development and calibration of a numerical groundwater model used to simulate groundwater flow paths at and near former and currently active military bases in Montgomery and Bucks Counties in southeastern Pennsylvania (Goode and Senior, 2020). The hydrologic data...

Pennsylvania Water Science Center

February 25, 2020

Data collected and sediment loads estimated in support of study evaluating effects of removal of legacy sediment at Big Spring Run, Lancaster County, Pennsylvania, 2009-2015 Data collected and sediment loads estimated in support of study evaluating effects of removal of legacy sediment at Big Spring Run, Lancaster County, Pennsylvania, 2009-2015

The stream corridor at the Big Spring Run restoration site has been identified as a substantial source of sediment and nutrients to streams due to streambank erosion and floodplain scour of legacy sediment. Three USGS streamgages were installed and water-quality monitoring began in water year 2009, prior to the legacy sediment removal from the restoration area. The legacy sediment was...

Pennsylvania Water Science Center

February 25, 2020

Archival data sets for regressions to estimate continuous streamflow, turbidity, and suspended sediment in support of study evaluating effects of removal of legacy sediment at Big Spring Run, Lancaster County, Pennsylvania, 2009-2015 Archival data sets for regressions to estimate continuous streamflow, turbidity, and suspended sediment in support of study evaluating effects of removal of legacy sediment at Big Spring Run, Lancaster County, Pennsylvania, 2009-2015

Pennsylvania Water Science Center

February 6, 2020

Data in support of Development of Regression Equations for the Estimation of Flood Flows at Ungaged Streams in Pennsylvania Data in support of Development of Regression Equations for the Estimation of Flood Flows at Ungaged Streams in Pennsylvania

Regression equations, which may be used to estimate flood flows at select annual exceedance probabilities, were developed for ungaged streams in Pennsylvania. The equations were developed using annual peak flow data through water year 2015 and basin characteristics for 285 streamflow gaging stations across Pennsylvania and surrounding states. The streamgages included active and...

Pennsylvania Water Science Center

February 5, 2020

MODFLOW 6 and MODPATH 7 model data sets used to evaluate groundwater flow in the vicinity of Horsham and Warminster, Bucks and Montgomery Counties, Pennsylvania-Preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017 MODFLOW 6 and MODPATH 7 model data sets used to evaluate groundwater flow in the vicinity of Horsham and Warminster, Bucks and Montgomery Counties, Pennsylvania-Preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017

In cooperation with the U.S. Navy, USGS developed and calibrated a numerical MODFLOW 6 model to simulate regional groundwater flow under selected conditions during 1999-2017 at and near the former Willow Grove Naval Air Station Joint Reserve Base in Horsham, Montgomery County and the former Naval Air Warfare Center Warminster in Bucks County, Pennsylvania. The model simulations provide...

Pennsylvania Water Science Center

January 22, 2020

Compilation of data not available in the National Water Information System for domestic wells sampled by the U.S. Geological Survey in Clinton County, Pennsylvania, May-September 2017 Compilation of data not available in the National Water Information System for domestic wells sampled by the U.S. Geological Survey in Clinton County, Pennsylvania, May-September 2017

This dataset contains the lithologic class and topographic position index information and quality-assurance and quality-control data not available in the online National Water Information System for 54 domestic wells sampled by the U.S. Geological Survey in Clinton County, Pennsylvania, May-September 2017. The topographic position index (TPI) for each well location was computed on the...

Pennsylvania Water Science Center

October 30, 2019

Compilation of wells sampled, physical characteristics of wells, links to water-quality data, and quality assurance and quality control data for domestic wells sampled by the U.S. Geological Survey in Potter County, Pennsylvania, April-September 2017 Compilation of wells sampled, physical characteristics of wells, links to water-quality data, and quality assurance and quality control data for domestic wells sampled by the U.S. Geological Survey in Potter County, Pennsylvania, April-September 2017

This dataset contains the lithologic class and topographic position index information and quality-assurance and quality-control data not available in the online National Water Information System for 47 domestic wells sampled by the U.S. Geological Survey in Potter County, Pennsylvania, April-September 2017. The topographic position index (TPI) for each well location was computed on the...

Pennsylvania Water Science Center

August 13, 2019

Quality Control and Soil Quality Data in support of Baseline Environmental Monitoring at the Ammonium Perchlorate Rocket Motor Destruction (ARMD) Facility at the Letterkenny Army Depot, Chambersburg, Pennsylvania, 2016 Quality Control and Soil Quality Data in support of Baseline Environmental Monitoring at the Ammonium Perchlorate Rocket Motor Destruction (ARMD) Facility at the Letterkenny Army Depot, Chambersburg, Pennsylvania, 2016

From September to December, 2016, herein referred to as the baseline characterization period, monthly samples were collected from four groundwater wells, one surfacewater site, and nine soil samples near the ARMD Facility. The only surfacewater site sampled monthly during the baseline characterization period was upgradient of the facility. There was no streamflow at surfacewater sites...

Pennsylvania Water Science Center

Drought Streamflow Probabilities in Northeast Region Drought Streamflow Probabilities in Northeast Region

Maximum likelihood logistic regression (MLLR) is used to estimate drought probabilities for selected Northeast rivers and streams. Winter streamflows are used to estimate the chance of hydrologic drought during summer months. This application allows the display and query of these drought streamflow probabilities for Northeastern streams.

New England Water Science Center, New York Water Science Center, Pennsylvania Water Science Center, Drought

Pennsylvania Drought Condition Monitoring Pennsylvania Drought Condition Monitoring

The PA Drought Condition Monitoring Application shows the current drought status for each county and hydrologic conditions for precipitation, streamflow, groundwater levels, and Palmer Drought-Severity Index used by PA DEP for drought monitoring.

Pennsylvania Water Science Center, Drought

February 5, 2019

Hydrologic data collected by the U.S. Geological Survey and National Park Service at the Allegheny Portage Railroad National Historic Site, Summit Area, Blair and Cambria Counties, Pennsylvania, April 2014-December 2016 Hydrologic data collected by the U.S. Geological Survey and National Park Service at the Allegheny Portage Railroad National Historic Site, Summit Area, Blair and Cambria Counties, Pennsylvania, April 2014-December 2016

This data release reports water-quantity and water-quality data collected during 2014-2016 by the U.S. Geological Survey (USGS) and in cooperation with the National Park Service (NPS) at the Allegheny Portage Railroad National Historic Site (ALPO) in Blair and Cambria Counties, Pennsylvania (figure 1). These data establish a base-line for current hydrologic conditions and may be helpful...

Pennsylvania Water Science Center