We monitor hydrologic conditions so you can make informed decisions
Our Scientists operate state-of-the-art data networks that provide spatially-consistent data to compare to historic trends
Our Scientists operate state-of-the-art data networks that provide spatially-consistent data to compare to historic trends
We investigate and study our world and its relation to water
NJWSC is highly involved in research into our ecosystems, streams, groundwater, and their health and water quality
NJWSC is highly involved in research into our ecosystems, streams, groundwater, and their health and water quality
USGS National Water Dashboard for New Jersey
USGS Real-Time Water Data Mapper highlighting New Jersey
USGS Real-Time Water Data Mapper highlighting New Jersey
Coastal Floodplain Inundation Map
New Jersey Long-term Water Monitoring Networks
Learn about our Long-term Water Monitoring Networks
Learn about our Long-term Water Monitoring Networks
PFAS in Surface Waters of the Non-Tidal Passaic River Basin
North Jersey PFAS
North Jersey PFAS
New Jersey Water Science Center
Welcome! Since 1903, the New Jersey Water Science Center has been collecting high-quality hydrologic data and conducting unbiased water-science research to address the water-resource priorities of the Nation, global trends and support statewide water-resource infrastructure and management needs.
New Jersey Current Water Conditions
New Jersey Current Water Conditions
Real-time New Jersey Streamflow, Groundwater, and Water-quality conditions available through the National Water Data Dashboard interactive map application.
NJ WSC Quick Links
NJ WSC Quick Links
Explore some of our more popular science and tools
News
The Jersey Current: Spring/Summer 2026 - Vol. 1 | Issue 1
The Jersey Current: Spring/Summer 2026 - Vol. 1 | Issue 1
Geospatial Applications to Visualize Science and Support Decision‑Making Across Scales
Geospatial Applications to Visualize Science and Support Decision‑Making Across Scales
Predictions of PFAS in groundwater at drinking water supply depths in the U.S.
Predictions of PFAS in groundwater at drinking water supply depths in the U.S.
Publications
The effect of temperature, flow, density and disease on smallmouth bass (Micropterus dolomieu) early life growth rate The effect of temperature, flow, density and disease on smallmouth bass (Micropterus dolomieu) early life growth rate
Individual growth rates of fish are influenced by gradually changing environmental conditions and rapid-onset events. However, there is a paucity of information on drivers of spatiotemporal variability in growth rates of fishes across large spatial extents. Using a 36-year dataset of smallmouth bass (Micropterus dolomieu) length-at-age data across 10 river reaches in Pennsylvania, USA (n...
Non-destructive sampling of larval amphibians shows tail tissues reflect whole-body methylmercury concentrations and trophic-related differences in bioaccumulation Non-destructive sampling of larval amphibians shows tail tissues reflect whole-body methylmercury concentrations and trophic-related differences in bioaccumulation
Mercury (Hg), and specifically methylmercury (MeHg), is a contaminant of global concern to humans and wildlife, but there is still limited understanding of its effects on many taxa. Amphibians are closely associated with water, where Hg is converted to MeHg, and high concentrations of MeHg can reduce survival of amphibians in the wild. However, limited non-lethal proxies exist for...
Analysis of alternative weir designs for improved passage of select fish at the U.S. Geological Survey streamgaging weir at Blackwells Mills, New Jersey Analysis of alternative weir designs for improved passage of select fish at the U.S. Geological Survey streamgaging weir at Blackwells Mills, New Jersey
As the population of New Jersey continues to remain dense, the need for water supply will likely continue to be high, which can lead to water managers needing to make difficult decisions about managing drinking-water supply. Streamgaging weirs like the ones used by the U.S. Geological Survey (USGS) play a critical role in providing accurate and stable streamflow data, but their presence...
Science
New Jersey ScienceBase Catalog
Hydrologic data collection, processing, analysis, dissemination, and archiving are major parts of the New Jersey Water Science Center program. ScienceBase is a primary repository for USGS data releases, published USGS scientific data and metadata, presented in a structured, discoverable format.
Coastal Plain Chloride Network
Chloride levels in groundwater are measured in selected wells on a 5‑year cycle to provide early warning of saltwater intrusion and to delineate the 250 mg/L line of equal chloride concentration within the principal aquifers of the New Jersey Coastal Plain.
Manning's Roughness Coefficient for New Jersey Streams
Manning’s Roughness Coefficient ( n) is an input to the Manning’s Equation, which can be used for the computation of streamflow during times it is impractical or impossible to make a measurement. Methods and regional equations for determining the value of n have largely been developed in the western United States; New Jersey is comparatively unstudied. New Jersey features a diverse range of...