science

Monitoring

As part of the System-Wide Monitoring Program (SWMP), we collect site-specific data on abiotic indicators of water quality and weather every 15 minutes at several sites along the Hudson. To track the ecological functions of habitats and how they are changing, we also collect data on vegetative cover, marsh surface elevation, and water levels.

Our data is freely available to the researchers who study the Estuary, the land managers who protect it, and the students and community members who care about their local waters. Data can be explored by visiting the National Oceanic and Atmospheric Administration (NOAA) Centralized Data Management Office website. 

Looking to do research in the Hudson River Estuary? We can help. Check out our searchable libary of collaborative research questions.

Status Reports

The Hudson River Research Reserve compiles yearly status reports on ecological conditions for each of its four components sites, as well as the headquarters at Norrie Point Environmental Center. These status reports compare data collected from previous years, noting any changes in historical trends and averages.

Nutrient Data

The Hudson River Research Reserve has collected ammonium, nitrate, phosphate, sulfate, chloride, suspended sediment, and chlorophyll data at all component sites since 1991. This data has directed vital research and guided the management of the Estuary.

Water Quality Data

Since 1995, we have collected water quality data including depth, dissolved oxygen, temperature, conductivity, salinity, pH, turbidity, and chlorophyll at one station at Norrie Point and two stations within Tivoli Bays. Additional monitoring stations have been established at Ferry Landing near Stockport Flats and at Bear Mountain State Park near Iona Island.

Meteorological Data

The Reserve monitors meteorological data at two weather stations: one at Norrie Point and one near Tivoli Bays. The following parameters are measured by the Reserve: air temperature, relative humidity, barometric pressure, precipitation, photosynthetically active radiation, and wind direction and speed. These data complement our water quality data and improve our understanding of the relationship between atmospheric and aquatic conditions.

Tide Station Data

In 2017, The Reserve installed the only water level/tide station above the Battery in New York City. The station provides real-time reports of water and meteorological conditions and is part of NOAA’s National Water Level Observing Network (NWLON). This data can be used to observe daily tides, water temperature, localize tidal predictions, track episodic water levels due to storms, and establish long term water level trends.