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State of New Jersey-Department of Environmental Protection-Division of Water Monitoring and Standards
State of New Jersey Department of Environmental Protection
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The data collected through the ambient water monitoring networks, programs and projects, conducted by the Division of Water Monitoring & Standards (DWM&S), resides in a variety of locations including both national and DEP databases as well as on various DWM&S webpages. Click on any of the links or icons below to access the data of interest.

National Databases

National Water Quality Portal


The National Water Quality Portal is a cooperative service sponsored by the National Water Quality Monitoring Council, the US Environmental Protection Agency (EPA) and the US Geological Survey (USGS). It serves data collected by over 400 state, federal, tribal and local agencies. Data is acquired from EPA’s STORET data warehouse, USGS’ NWIS database and the USDA ARS STEWARDS database system.

DWM&S’ freshwater physical/chemical data (rivers, streams and lakes) and much of its marine water monitoring data(beach monitoring, shellfish sanitation, chemical water quality and phytoplankton) are available from this portal.

STORET Data Warehouse


STORET (STOrage and RETrieval) Data Warehouse is EPA’s repository for water quality, biological, and physical data. Also included in this data warehouse are water quality habitat, metrics and indices.

In addition to the freshwater and marine water monitoring data mentioned under the National Water Quality Portal, DWM&S’ biological monitoring data (benthic macroinvertebrate and fish assemblage) is available from this data warehouse.



NWIS (National Water Information System) is the USGS repository for data on surface water flow and levels in streams and lakes, ground water levels in wells, chemical and physical data for streams/lakes/springs, and water use information. Data from NJ’s Ambient Stream Monitoring Network (a cooperative network with the USGS NJ Water Science Center) can be found here as well as via the National Water Quality Portal described above.

Division Webpages


Data for all of the freshwater monitoring activities – chemical, physical and biological – can be found on the Bureau of Freshwater & Biological Monitoring’s webpages. Also available on those pages are sediment toxicity data.

Marine/Coastal Water

Data for the marine/estuarine monitoring activities – beach water quality, shellfish sanitation, chemical coastal water quality, phytoplankton, remote sensing for chlorophyll a - can also be accessed from the Bureau of Marine Water Monitoring’s webpages.

Continuous Monitoring

DWM&S performs monitoring in both rivers and streams as well as marine and estuarine waters using both sondes and buoys. Click the image below to access both current as well as historic location data.


Water Quality Data Mapping Tools

Tools are available which allow users to view water quality data spatially. These include:

Interactive Maps


With NJ-GeoWeb users can view and query the best of the NJDEP’s Geographic Information System (GIS) data. NJ-GeoWeb users can access current water quality and environmental data related to selected features appearing on the map. Users can search for data by county/municipality or watershed/subwatershed and then see chemical, biological or habitat results in tables that can be copied and pasted into desktop software programs.


Water quality data from EPA is available from MyWATERSMapper, which is a web-based GIS application that dynamically displays water quality and other environmental information about bodies of water in the United States. This interactive tool allows you to create customized maps that portray the nation's surface waters along with a collection of water quality related data from the national level down to community level. The redesigned tool provides the ability to:

  • Geographically display a variety of EPA water program data
  • Pan, zoom, label and print maps
  • Link to water program web reports after identifying specific features of interest
  • Generate specific water quality related reports based on an area of interest

For additional information, please contact Bruce Friedman, Director.

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Last Updated: January 26, 2018