Water
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Water Quality (305b) Report to Congress
The DEEP Water Monitoring Group conducts annual water quality monitoring to evaluate the physical, chemical and biological condition of the State’s waters. Group staff collect a wide variety and large quantity of information each year, including water chemistry data, water temperature data, bacteria data, biological community data (fish, macroinvertebrates, diatoms) and tissue contaminant data.
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Stormwater Planning Tool for Impervious Cover
Stormwater planning tool: Impervious Cover (IC Response Plan) provides details on the local watershed conditions, impervious cover, and implementation measures.
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Long Island Sound Water Quality Monitoring FAQs
Answers to commonly asked questions about the Long Island Sound Water Quality Monitoring Program.
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Triennial Review of the Connecticut Water Quality Standards
Topics under Consideration for Revision within the WQS Regulations 2025
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Inland Wetlands and Watercourses
CT DEEP inland wetlands and watercourses home page.
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Inland Wetlands and Watercourses Municipal Permitting
Information about the municipal permitting process for activities proposed in inland wetlands and watercourses
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2010 Training Program - Segment 3 GIS and Geospatial Data
2010 MIW Training Segment 3 Materials: GIS and CT ECO
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Municipal inland Wetlands Agency Training Material - Segment 3
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Training Materials - Segment 2
Segment 2 Training material for municipal wetlands agencies
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Training Materials - Segment 1
Segment 1 Training material for municipal wetlands agencies
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Legislation, Regulations & Case Law
Inland wetlands & watercourses regulation guidance for municipal wetland agencies
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Inland Wetlands Citizen Information
State of CT inland wetlands and watercourses citizen information.
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How Are Inland Wetlands and Watercourses Defined
How Inland Wetlands and Watercourses are defined in Connecticut
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2012 Training Program - Segment 3 Vernal Pool Ecology and Monitoring
2012 Training Program - Segment 3 Vernal Pool Ecology and Monitoring