Near real-time environmental data are being generated and publicly posted posted by HRECOS (Hudson River Environmental Conditions Observing System), HRNERRS (Hudson River National Estuarine Research Reserve System), and the USGS (U.S. Geological Survey).  The River Keeper measures and reports on bacteria in the Estuary.  New York City's Harbor Water Quality Survey has been measuring dissolved oxygen, temperature, and bacteria in the Harbor since 1909.

HRECOS - Hudson River Environmental Conditions Observing System, network of real-time water quality and meteorological monitoring stations

HRNERRS - Hudson River National Estuarine Research Reserve; data

HRNERRS - Hudson River National Estuarine Research Reserve; description

NYHOPS - New York Harbor Observing and Prediction System

USGS - U. S. Geological Survey Water Discharge, NYS

USGS - Lower Hudson River Sediment Flux Project; water discharge and sediment transport at Poughkeepsie

USGS - National Water-Quality Assessment (NAWQA)

Hudson River Riverkeeper; advocacy and bacteriology

New York Harbor Water Quality Survey


The Contaminant Assessment and Reduction Project (CARP) collected data on toxic chemicals (PCBs, pesticides, dioxins/furans, PAHs, mercury, and cadmium) in Hudson Estuary water, sediment and biota between 1998 and 2001.  These data were used to make predictions for how contaminant concentrations change after user-specified load reductions.

CARP- Contaminant Assessment and Reduction Project


Authoritative reports on Hudson River PCBs:

EPA - Hudson PCB Cleanup

Hudson River Natural Resource Damage Assessment


On-Going environmental science programs in the Hudson Basin can be found at the following links:

RPI's Darrin Freshwater Institute

HREP - NYSDEC's Hudson River Estuary Program

Cary Institute of Ecosystem Studies

Hudson River Foundation

The Beacon Institute for Rivers and Estuaries


Marist College, in Poughkeepsie, NY, maintains an archive on the history of environmentalism on the Hudson River, with particular attention to the Storm King controversy.

HRES Archives at Marist College


The Environmental Consortium of Colleges and Universities brings together academics from all parts of the valley who study environmental issues and disseminates their results through articles on its web page and conferences.