Pennsylvania and the Delaware River Basin
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By Pennsylvania Water Science Center
September 9, 2025
Testing New Water Quality Monitoring Methods in Philadelphia
USGS demonstrates advanced technologies during a stream gage visit
USGS demonstrates advanced technologies during a stream gage visit
Paired Air and Water Temperature Monitoring
Next Generation Water Observing System (NGWOS)
Next Generation Water Observing System (NGWOS)
Hurricane Henri Water Footprint Data Visualization
As precipitation accumulated over DE, PA, NJ, NY, CT, RI, and MA, stream water levels increased above flood stage in several locations.
As precipitation accumulated over DE, PA, NJ, NY, CT, RI, and MA, stream water levels increased above flood stage in several locations.
Balancing Water Availability and Quality in the Delaware River Basin
New data visualization story show how new USGS science and monitoring can inform water management
New data visualization story show how new USGS science and monitoring can inform water management
Philadelphia Water Resources Monitoring
Real-time water quality information from USGS streamgaging sites in and around the City of Philadelphia
Real-time water quality information from USGS streamgaging sites in and around the City of Philadelphia
Philadelphia Area Groundwater Level Network
Latest water levels in Philadelphia area aquifers via Pennsylvania Groundwater Watch
Latest water levels in Philadelphia area aquifers via Pennsylvania Groundwater Watch
In Pennsylvania, the USGS's water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Delaware and Susquehanna Rivers and assessments of groundwater resources near Philadelphia. The USGS Pennsylvania Water Science Center continues to provide scientific information about the water resources of the Delaware River Basin, in cooperation with regional and local agencies and stakeholders, and with other USGS Water Science Centers and national programs.
Recent Highlights
- Publication: Urban Stream Chloride
- Factsheet - Integrated Water Science Basins: Water Priorities for the Nation
- Publication: Hydro-Climatic Drought
- Publication: Low-flow Patterns, Drivers & Trends
- Factsheet - Integrated Water Availability Assessments: Water Priorities for the Nation
- Next Generation Water Observing System: Delaware River Basin
Media
Sources/Usage: Public Domain. View Media Details
Next Generation Water Observing System: Delaware River Basin
The Next Generation Water Observing System (NGWOS) supports water availability assessments, management, and prediction by enhancing water observations in basins that represent major U.S. hydrologic regions. The Delaware River Basin was the first Integrated Water Science basin selected, providing an opportunity to implement the NGWOS program in a nationally important, complex interstate river...
Filter Total Items: 16
Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania
Water-quality samples were collected from the Upper Delaware Scenic and Recreational River (UPDE) and its tributaries during the period October 1, 2005, to September 30, 2007, to document existing water quality, determine relations between land use and water quality, and identify areas of water-quality concern. A tiered water-quality monitoring framework was used, with the tiers...
Water Budgets and GIS-Based Ground-Water Availability Analysis for the Delaware River Basin
The purpose of this project was to provide a basin-wide vision for long-range goals and provide direction for guiding future water-resource management to the Delaware River Basin Commission (DRBC) for updating its comprehensive plan. A systematic approach was developed for evaluating existing and future water withdrawals relating to available supply and environmental requirements.
Delaware River Basin Study Unit Description
The Delaware River drainage basin encompasses more than 12,700 mi2 (square miles) and includes parts of Pennsylvania (6,465 mi2), New Jersey (2,969 mi2), New York (2,363 mi2), and Delaware (968 mi2). The study-unit area includes the entire drainage basin, except for 770 mi2 of the Coastal Plain in the State of Delaware and the tidal portions of the Delaware Estuary. About 7.2 million people live...
Delaware River Basin (DelR) NAWQA Study Unit
The Delaware River Basin (DELR) NAWQA study began in 1997 and is a multi-district effort. Coordinated from our West Trenton, New Jersey office, the study also includes paticipation by our Harrisburg, Pennsylvania and Troy, New York offices. During the first two years of the study (1997-1998) staff was hired, a liaison committee was started, existing data was analyzed, and plans for three years...
Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA
Fairmount Waterworks, east bank of Schuylkill River, Aquarium Drive, Philadelphia, Philadelphia County, PA. View looking northeast at waterworks from across Schuylkill River. Photo taken December, 1984.
In Pennsylvania, the USGS's water-resources roots date back to the late 1800's, with the initiation of streamflow gaging on the Delaware and Susquehanna Rivers and assessments of groundwater resources near Philadelphia. The USGS Pennsylvania Water Science Center continues to provide scientific information about the water resources of the Delaware River Basin, in cooperation with regional and local agencies and stakeholders, and with other USGS Water Science Centers and national programs.
Recent Highlights
- Publication: Urban Stream Chloride
- Factsheet - Integrated Water Science Basins: Water Priorities for the Nation
- Publication: Hydro-Climatic Drought
- Publication: Low-flow Patterns, Drivers & Trends
- Factsheet - Integrated Water Availability Assessments: Water Priorities for the Nation
- Next Generation Water Observing System: Delaware River Basin
Media
Sources/Usage: Public Domain. View Media Details
Next Generation Water Observing System: Delaware River Basin
The Next Generation Water Observing System (NGWOS) supports water availability assessments, management, and prediction by enhancing water observations in basins that represent major U.S. hydrologic regions. The Delaware River Basin was the first Integrated Water Science basin selected, providing an opportunity to implement the NGWOS program in a nationally important, complex interstate river...
Filter Total Items: 16
Water Quality of the Upper Delaware Scenic and Recreational River and Tributary Streams, New York and Pennsylvania
Water-quality samples were collected from the Upper Delaware Scenic and Recreational River (UPDE) and its tributaries during the period October 1, 2005, to September 30, 2007, to document existing water quality, determine relations between land use and water quality, and identify areas of water-quality concern. A tiered water-quality monitoring framework was used, with the tiers...
Water Budgets and GIS-Based Ground-Water Availability Analysis for the Delaware River Basin
The purpose of this project was to provide a basin-wide vision for long-range goals and provide direction for guiding future water-resource management to the Delaware River Basin Commission (DRBC) for updating its comprehensive plan. A systematic approach was developed for evaluating existing and future water withdrawals relating to available supply and environmental requirements.
Delaware River Basin Study Unit Description
The Delaware River drainage basin encompasses more than 12,700 mi2 (square miles) and includes parts of Pennsylvania (6,465 mi2), New Jersey (2,969 mi2), New York (2,363 mi2), and Delaware (968 mi2). The study-unit area includes the entire drainage basin, except for 770 mi2 of the Coastal Plain in the State of Delaware and the tidal portions of the Delaware Estuary. About 7.2 million people live...
Delaware River Basin (DelR) NAWQA Study Unit
The Delaware River Basin (DELR) NAWQA study began in 1997 and is a multi-district effort. Coordinated from our West Trenton, New Jersey office, the study also includes paticipation by our Harrisburg, Pennsylvania and Troy, New York offices. During the first two years of the study (1997-1998) staff was hired, a liaison committee was started, existing data was analyzed, and plans for three years...
Fairmount Waterworks, east bank of Schuylkill River, Philadelphia, PA
Fairmount Waterworks, east bank of Schuylkill River, Aquarium Drive, Philadelphia, Philadelphia County, PA. View looking northeast at waterworks from across Schuylkill River. Photo taken December, 1984.