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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September 26, 2023

Benthic-macroinvertebrate and habitat data in Chester, Delaware, and Philadelphia Counties, Pennsylvania, 1998-2021

The Stream Conditions of Chester County Biological Monitoring Network was established by the U.S. Geological Survey and the Chester County Water Resources Authority in 1969. Benthic-macroinvertebrate, habitat, and stream chemistry data were collected annually from 1998-2021 at 18 fixed location sites. Additionally, nine flexible location sites were selected and sampled annually from 1998-2021. Som

Pennsylvania Water Science Center

September 8, 2023

Data in support of peak streamflows and flooding in select areas of Pennsylvania from the remnants of Hurricane Ida, September 1-2, 2021

Heavy rainfall occurred across Pennsylvania on September 1 and 2, 2021, as a result of the remnants of Hurricane Ida. Much of eastern and southcentral Pennsylvania received five to ten inches of rain and most of the rainfall occurred in a little more than six hours. Widespread substantial flooding occurred in the area, particularly impacted was the city of Philadelphia and surrounding areas. Flood

Water Resources Mission Area, Pennsylvania Water Science Center

August 21, 2023

Depth grids for floodplain flood attenuation baseline and counterfactual scenarios in the Schuylkill River watershed, Pennsylvania

As part of a study to quantify floodplain flood attenuation ecosystem services, datasets were developed representing a baseline (current floodplain condition) and counterfactual (floodplain flood storage removed) scenario for 18 sites in the Schuylkill River Watershed, Pennsylvania. This data release contains rasters (3-m resolution) of baseline and counterfactual flood depth grids for the 0.5, 0.

Chesapeake Bay Activities, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC)

June 27, 2023

Compilation of multi-agency water temperature observations for streams within the Chesapeake Bay watershed

This data release collates stream water temperature observations across the Chesapeake Bay watershed from the USGS National Water Information System (NWIS), Water Quality Portal (WQP) and the USGS Aquarius (AQ) Time-Series database. Data retrieved from NWIS consists of aggregate (minimum, maximum and mean) daily values and continuous data from USGS monitoring stations. Values from the WQP contain

Chesapeake Bay Activities, Pennsylvania Water Science Center

March 28, 2023

Geospatial Dataset of Topographic and Bathymetric Survey Points collected for US Army Corps of Engineers as part of the Sustainable Rivers Program in the Allegheny River, PA downstream of the Kinzua Dam.

This dataset contains spatial datasets of topographic and bathymetric survey data in addition to data table the shapefile data collected at the 3 focal areas of research included in the Sustainable Rivers Program (SRP) in the Allegheny River that were collected and processed in collaboration with US Army Corps of Engineers (USACE). The dataset is a combination of terrestrial topographic and bathym

Pennsylvania Water Science Center

February 7, 2023

Flood Data Collection in Pennsylvania – Site Selection Data for the Development of a Rapid Deployment Network

The U.S. Geological Survey (USGS), in cooperation with the Federal Emergency Management Agency (FEMA), is working to identify priority locations across Pennsylvania where additional riverine flood information may be desirable during or after major storm events. Criteria involved in the identification of potential locations for flood data collection includes locations of bridges over water, scour-c

Pennsylvania Water Science Center

January 24, 2023

Groundwater, surface water, bed sediment, soil, benthic macroinvertebrate taxa and biological indices data collected near and at the Open Burning/Open Detonation (OB/OD) Areas at the Letterkenny Army Depot, Chambersburg, Pennsylvania, 2018-2021

Sampling is conducted by the U.S. Geological Survey (USGS) at nine wells, eight surface water sites, three bed sediment retention ponds, and two fields for soil samples at areas near and within the Open Burning/Open Detonation (OB/OD) areas in the Ammunition Area (AA) of Letterkenny Army Depot. Analytical results for groundwater samples collected from 2018-2021 are provided in “OBOD_wells_data_201

Pennsylvania Water Science Center

August 15, 2022

Altitude of selected beds and inferred faults in boreholes as identified from geophysical logs at Valmont TCE Site, Luzerne County, Pennsylvania

This dataset contains altitudes of selected beds and inferred faults in boreholes within an area of interest determined by the U.S. Environmental Protection Agency (EPA) at the Valmont TCE Superfund site in Luzerne County, Pennsylvania. The selected beds correspond to sections of borehole geophysical logs with elevated natural gamma activity as described in the U.S. Geological Survey (USGS) Open-F

Pennsylvania Water Science Center

August 15, 2022

Collection of Analytical Data for the Pennsylvania Groundwater Monitoring Network

This dataset contains all publicly-available analytical data collected by the U.S. Geological Survey (USGS) at each location within the Pennsylvania Groundwater Monitoring Network (GWMN) from 2015 to present. Additional analytical data will be appended following the conclusion of each sampling season, and all data is made publicly available in the online National Water Inventory System (NWIS). Thi

Pennsylvania Water Science Center

August 15, 2022

Pennsylvania Groundwater Quality Monitoring Network Data Exploration Tool

The Pennsylvania Groundwater Monitoring Network (GWMN) is a cooperative effort between the U.S. Geological Survey Pennsylvania Water Science Center and the Pennsylvania Department of Environmental Protection (PaDEP) that samples ambient groundwater quality wells throughout the State. Data collection has occurred since 2015 for major ions, trace metals, nutrients, and organic compounds; most sites

Pennsylvania Water Science Center

March 31, 2022

USGS-derived 1-percent Annual Exceedance Probability Flood-Flow Estimates at Flood Insurance Study Locations Across Pennsylvania

One-percent annual exceedance probability (AEP) flood-flow estimates were computed at flood insurance study (FIS) locations across Pennsylvania using methods identified in Scientific Investigation Report (SIR) 2019-5094. Following guidance outlined in SIR 2016-5149, valid statistical reaches (VSRs) were identified for streamgages, which were used to assist with the determination of the applicable

Pennsylvania Water Science Center

March 29, 2022

Estrogen equivalents of surface water in Pennsylvania, 2012-2017

The data were gathered as part of a long-term, seasonal assessment of estrogenicity in selected locations within Pennsylvania from 2012-2017. Data were collected over this time frame to determine seasonal and annual changes in surface water estrogenicity.Estrogen is reported as estrogen equivalents (EEQ) as determined by a bioluminescent yeast estrogen screen. A total of 193 grab water samples wer

Eastern Ecological Science Center, Pennsylvania Water Science Center