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A Hudson River Environmental Conditions Observation System (HRECOS) is owned and managed by CURB and is part of a state network of over a dozen such stations from Albany to NYC. The system, installed at the Groundwork Hudson Valley Science Barge, tracks real-time river parameters such as temperature, pH, salinity, dissolved oxygen, chlorophyll, and turbidity, creating a long-term baseline data set for additional study and analysis.

The system utilizes a YSI Exo2 multiparameter sonde which is deployed in the river at a depth of about one meter. The sonde is housed in a perforated PVC pipe that is strapped to the side of the barge, and is in the river 24/7 except for routine cleaning and maintenance. Data points are recorded every 15 minutes and logged via a Campbell Scientific data-logger and transmitted wirelessly over a Sierra Wireless AirLink modem.

Current conditions can be seen below. Please note that you can click on the tab for each parameter. 

For data from other sites, downloadable data, data stories, and even lesson plans for teachers see: