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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Impaired Estuary 2024

    Metadata Updated: March 1, 2026

    Connecticut 303(d) Impaired Waters 2024 is a subset of Connecticut 305(b) Assessed Waters 2024. If any one of the assigned designated uses is categorized as NOT Supporting, the assessed waterbody is included in this subset and is considered impaired. Additional information about Integrated Water Quality reporting is available on the CT DEEP website, Integrated Water Quality Report page. 
    Connecticut 305(b) Assessed Waters files includes rivers, lakes and estuaries that have been assessed in compliance with Sections 305(b) and 303(d) of the federal Clean Water Act. Section 305(b) of the Clean Water Act requires each state to monitor, assess and report on the quality of its waters relative to attainment of designated uses established by the State's water quality standards. Section 303(d) requires each State to compile a subset of that list identifying only those waters not meeting water quality standards and assign a Total Maximum Daily Load (TMDL) priority ranking to each impaired waterbody.
    This assessment is based on information collected and compiled prior to 2024. It represents conditions at a particular point in time and does not represent current conditions. Depending on the type of waterbody - river, lake, or estuary - this information geographically displays attainment and non-attainment (e.g. full supporting, not supporting, not assessed) for each designated use - aquatic life, marine aquatic life, recreation use, fish consumption, shellfish harvesting, and drinking water supply.

     

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

    Downloads & Resources

    Dates

    Metadata Created Date March 1, 2026
    Metadata Updated Date March 1, 2026

    Metadata Source

    Harvested from Connecticut Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 1, 2026
    Metadata Updated Date March 1, 2026
    Publisher Department of Energy & Environmental Protection
    Maintainer
    Identifier https://www.arcgis.com/home/item.html?id=341c9133e3984e109f936550d358407b&sublayer=2
    Data First Published 2026-02-24
    Data Last Modified 2026-02-24
    Category geospatial
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.ct.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id 72cb499b-658e-4fac-b0d0-f4e8ec85eaed
    Harvest Source Id 36c82f29-4f54-495e-a878-2c07320bf10c
    Harvest Source Title Connecticut Data.json
    Homepage URL https://geodata.ct.gov/datasets/CTDEEP::impaired-estuary-2024
    Metadata Type geospatial
    Old Spatial -73.6595,40.9505,-71.8259,41.5375
    Source Datajson Identifier True
    Source Hash 7d4e7218661ae8e23924ae5c680249acdfeee8a406b00c03e9d56fc78e7f02c6
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -73.6595, 40.9505, -73.6595, 41.5375, -71.8259, 41.5375, -71.8259, 40.9505, -73.6595, 40.9505}

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