2025 Pathogen Monitoring Network




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The 2025 Pathogen Monitoring Network season has officially started! Since the beginning of May, ten groups have been sampling throughout Connecticut and New York to gather crucial fecal indicator bacteria data to fill data gaps in the Long Island Sound watershed. This network aims to create a coordinated, geographically strategic, scalable monitoring network for fecal indicator bacteria in the Sound in order to inform sound-wide management and restoration actions. From its start in 2023, the network has grown each year to work towards this goal.

Continuous Monitoring Launch




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IEC just deployed its first continuous monitoring sonde for readings in the New York/New Jersey Harbor! In conjunction with the New Jersey Department of Environmental Protection (NJDEP), four YSI EXO2 multiparameter sondes will be placed throughout the New York/New Jersey Harbor in order to provide continuous readings of water quality. The deployed sondes will remain in the water year-round when conditions allow and will measure temperature, conductivity, dissolved oxygen, pH, turbidity, and chlorophyll.

2024 State Summaries




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IEC’s annual “State Summaries” are now published, providing an overview of the organization’s work and impact in the three states in its environmental district throughout the fiscal year 2023-2024. In addition to water quality programs, collaborative activities are shared, including workgroups and committees, public education and outreach.

Western Long Island Sound Hypoxia in Summer 2024- Time-Lapse Videos




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Check out these summer 2024 time-lapse videos depicting dissolved oxygen levels in the western Long Island Sound! These visualizations were developed using surface (1 meter depth) and bottom (1 meter above sediment) dissolved oxygen measurements taken by IEC during our weekly water quality surveys in summer 2024. Low or depleted dissolved oxygen levels in a waterbody is referred to as hypoxia. Hypoxia can result in significant adverse effects on marine life and habitats, which need sufficient dissolved oxygen (>5.00mg/L) to survive and thrive.

Western Long Island Sound Hypoxia in Summer 2023 Time-Lapse Videos




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Check out these time-lapse videos depicting dissolved oxygen levels in western Long Island Sound! These visualizations were developed using dissolved oxygen measurements taken by IEC during weekly #waterquality surveys in summer 2023. Discrete (individual) dissolved oxygen measurement were interpolated using GIS to estimate dissolved oxygen in areas surrounding the discrete measurements.  Dissolved oxygen maps from each weekly survey were then collated into these time-lapse videos.

Western Long Island Sound Hypoxia in Summer 2022 Time-Lapse Videos




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Check out these time-lapse videos depicting the onset (and subsequent dissipation) of #hypoxia in western Long Island Sound! These visualizations were developed using dissolved oxygen measurements taken by IEC during weekly #waterquality surveys in summer 2022. Discrete (individual) dissolved oxygen measurement were interpolated using GIS to estimate dissolved oxygen in areas surrounding the discrete measurements. The dissolved oxygen maps from each weekly survey were then collated into these time-lapse videos.

IEC and BioBAT are seeking proposals for lab and office development




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BioBAT, Inc. (www.biobat.nyc) and the Interstate Environmental Commission seek proposals from qualified general contractors to build and fit-out 2,800 square feet of BSL-2 laboratory and office space.  BioBAT, as landlord, and IEC, as tenant, are negotiating a lease on the second floor of BioBAT in Building A at the Brooklyn Army Terminal.

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