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 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

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

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

February 16, 2022

Soil Chemistry and Quality Control Data in support of Environmental Monitoring at the Open Burning/Open Detonation (OB/OD) areas in the Ammunition Area (AA) at Letterkenny Army Depot, Chambersburg, Pennsylvania, 2021

Soil sampling was needed to provide analytical soil data for areas near the Open Burning/Open Detonation (OB/OD) areas in the Ammunition Area (AA) of Letterkenny Army Depot. The U.S. Geological Survey sampled 10 locations and prepared the samples for chemical analyses. Samples were collected from depths of zero to six inches with a stainless-steel trowel. Multiple subsamples (10-20) were homogeniz

Pennsylvania Water Science Center

January 28, 2022

Waterborne Gradient Self-potential, Temperature, and Conductivity Logging of the Upper part of the Delaware River between Hancock and Port Jervis, New York, June-July 2021

This data release contains waterborne gradient self-potential (SP), surface-water temperature, surface-water conductivity and specific conductance, and surface-water nitrate concentration data measured continuously in the upper part of the Delaware River along approximately 123 kilometers (km) between Hancock and Port Jervis, New York. All of the data were measured from a kayak between June 27 and

Oklahoma-Texas Water Science Center, Pennsylvania Water Science Center

January 20, 2022

A finite-difference algorithm used to simulate radial diffusion, adsorption, and reactions of chlorinated ethenes in porous media

Simulations of radial diffusion, adsorption, and reactions of volatile organic compounds (VOCs) - trichloroethene (TCE), cis-1,2-dichloroethene (cDCE), vinyl chloride (VC), trichlorofluoroethene (TCFE) - and bromide (Br) in a porous media are conducted using rock properties identified from a mudstone aquifer in the Newark Basin, near West Trenton, New Jersey. The simulations are conducted using a

Pennsylvania Water Science Center

January 18, 2022

Data for Characterization of Ambient Groundwater Quality within a State-wide, Fixed Station Monitoring Network in Pennsylvania, 2015-2019

This dataset contains quality-assurance and quality-control data (QA/QC) not publicly available in the online National Water Information System (NWIS) for the Pennsylvania Groundwater Monitoring Network collected by the U.S. Geological Survey (USGS) in Pennsylvania, 2015-2019. The quality-control data (such as blanks and replicates) were collected at a subset of sites to ensure that the data meets

Pennsylvania Water Science Center