Hudson River Almanac
A weekly record of observations along the river including plants, animals, weather and other natural phenomena.
Hudson River Environmental Conditions Observing System (HRECOS)
Continuous data on river conditions from seven monitoring stations and two vessels.
Hudson River National Estuarine Research Reserve
Continuous data from two monitoring stations.
Lamont-Doherty Earth Observatory
Hudson River Tide and Current Prediction.
U.S. Geological Survey: New York Water Science Center (USGS)
Water Resources of New York: Home of multiple water quality projects.
USGS: Hudson River Sediment Flux Project:
Sediment study with useful list of links.