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NERRS System-Wide Monitoring

NERRS System-Wide Monitoring

Protocols of the NERRS System-Wide Monitoring Program are implemented to analyze the long-term change and short-term variability of nutrient, water quality, and meteorological conditions.

Yearly status reports are compiled from collected data, highlighting short-term variability and comparing historical trends. These status reports can be viewed HERE.

Norrie Point mooring with environmental monitoring equipment

Norrie Point water quality station mooring.

  • Nutrient data (ammonium, nitrate, phosphate, sulfate, and chloride, plus suspended sediment and chlorophyll) have been collected at all Reserve component sites since 1991. Changes in nutrient concentrations detected over this time period have been used to direct research and guide management decisions.
  • Water quality data (depth, dissolved oxygen, temperature, conductivity, salinity, pH, turbidity, and chlorophyll) have been monitored since 1995 using dataloggers (YSI 6600 sondes) deployed at one station at the Norrie Point Environmental Center, and at four stations within the Tivoli Bays component site. Two tidal freshwater wetlands, Tivoli North Bay and Tivoli South Bay, and their primary upland tributaries, Stony Creek and Saw Kill Creek respectively, were selected so that the relative importance of stream flow and tidal exchange can be determined.
Norrie Point Meteorological Station

Norrie Point Meteorological Station

  • Meteorological data (air temperature, relative humidity, barometric pressure, precipitation, photosynthetically active radiation, and wind speed and direction) helps provide ancillary data to the water quality conditions simultaneously recorded, increasing the understanding of the relationships between the atmospheric conditions and aquatic environments at this site. The meteorological conditions have been monitored since 1999 at two stations in proximity to the Tivoli Bays and Norrie Point water quality stations.


Water quality and meteorological data are transmitted in real time through the NERRS Centralized Data Management Office website and through the Hudson River Environmental Conditions Observing System, a river-wide monitoring collaborative.

Hudson River National Estuarine Research Reserve

New York State Department of Environmental Conservation
NOAA National Estuarine Research Reserve System

Tivoli Bays Launch Closure – 2020

The canoe and kayak launch on the Kidd Lane access road at Tivoli Bays WMA is closed for renovations until further notice. At this time, DEC does not have an estimated completion date for the project. Please contact Nathan Ermer at 845-256-3047 for more information about this project. Thank you for your patience and understanding.