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This is a Non-Federal dataset covered by different Terms of Use than

Impaired 2012 River Lake Estuary Set

Metadata Updated: September 15, 2023

Connecticut 303(d) Impaired Waters 2012 is a subset of Connecticut 305(b) Assessed Waters 2012. 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 2012. 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 License: Creative Commons CCZero

Downloads & Resources


Metadata Created Date September 2, 2022
Metadata Updated Date September 15, 2023

Metadata Source

Harvested from Connecticut Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date September 2, 2022
Metadata Updated Date September 15, 2023
Publisher Department of Energy & Environmental Protection
Data First Published 2021-11-02
Data Last Modified 2023-07-03
Category geospatial
Public Access Level public
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 9f259472-49d3-453f-abb5-b3f3c2077fbc
Harvest Source Id 36c82f29-4f54-495e-a878-2c07320bf10c
Harvest Source Title Connecticut Data.json
Homepage URL
Metadata Type geospatial
Old Spatial -73.7102,40.9501,-71.7702,42.0619
Source Datajson Identifier True
Source Hash bab393623979e4d49e5612ce67ce05cb37603887ea3537b1bc286fae840e1cbc
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -73.7102, 40.9501, -73.7102, 42.0619, -71.7702, 42.0619, -71.7702, 40.9501, -73.7102, 40.9501}

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