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Data on drinking water in Connecticut. Drinking water is a potentially significant route of exposure to contaminants. Today’s regulatory programs are designed to monitor public drinking water...
Search relevance: 164.46 | Views last month: 4 | Catalog Last Checked: September 10, 2026 at 06:40 PM -
This data release consists of vertical water-quality profile data collected at three locations in West Thompson Lake Connecticut from June to October 2022 and from May to October 2024. The U.S....
Search relevance: 154.74 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 08:26 PM -
This dataset contains the water-quality results from the testing of unfiltered water samples (environmental samples) collected from 674 private wells in Connecticut for the analysis of arsenic and...
Search relevance: 147.09 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 09:11 PM -
This data release includes vertical water-quality profile data collected from April 2022 to April 2024 at three locations in the Saugatuck River Embayment near Saugatuck, Connecticut, and two...
Search relevance: 139.46 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 10:16 PM -
This data release includes vertical water-quality-profile data from April 2021 to April 2023 at four stations in the Mystic River embayment and three stations in the Norwalk River embayment in...
Search relevance: 132.97 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:43 PM -
This U.S. Geological Survey (USGS) data release includes necessary information and data to support the analysis and interpretations of nutrient loading and sources of nitrogen in the associated...
Search relevance: 115.14 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:22 PM -
This U.S. Geological Survey data release presents tabular daily data on nitrate plus nitrite nitrogen and total nitrogen loads for the Connecticut River at Middle Haddam, Connecticut, from...
Search relevance: 104.33 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 09:27 PM -
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes water quality...
Search relevance: 74.37 | Views last month: 12 | Catalog Last Checked: September 10, 2026 at 06:39 PM -
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes water quality...
Search relevance: 74.22 | Views last month: 5 | Catalog Last Checked: September 10, 2026 at 06:40 PM -
See full Data Guide here. Surface Water Quality Classifications Set: This dataset is a line and a polygon feature-based layer compiled at 1:24,000 scale that includes water quality...
Search relevance: 74.11 | Views last month: 6 | Catalog Last Checked: September 10, 2026 at 06:42 PM -
See full Data Guide here.Ground Water Classifications Polygon: Ground Water Quality Classifications is a polygon feature-based layer compiled at 1:24,000 scale that includes water quality...
Search relevance: 71.19 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:41 PM -
This data release documents the data and models used to assess flows, concentrations, and loads of highway and urban runoff and of stormwater within receiving streams in southern New England....
Search relevance: 51.04 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 08:56 PM -
305b Assessed 2008 River, Lake, Estuary Set: Connecticut 305b Assessed River 2008 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with...
Search relevance: 46.88 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:41 PM -
305b Assessed 2012 River, Lake, Estuary set: Connecticut 305b Assessed River 2012 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with...
Search relevance: 46.88 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:41 PM -
305b Assessed 2012 River, Lake, Estuary set: Connecticut 305b Assessed River 2012 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with...
Search relevance: 46.63 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:40 PM -
305b Assessed 2012 River, Lake, Estuary set: Connecticut 305b Assessed River 2012 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with...
Search relevance: 46.37 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:39 PM -
305b Assessed 2010 River, Lake, Estuary Set: Connecticut 305b Assessed River 2010 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with...
Search relevance: 46.37 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:40 PM -
305b Assessed 2008 River, Lake, Estuary Set: Connecticut 305b Assessed River 2008 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with...
Search relevance: 46.37 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:40 PM -
305b Assessed 2010 River, Lake, Estuary Set: Connecticut 305b Assessed River 2010 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with...
Search relevance: 46.37 | Views last month: 0 | Catalog Last Checked: September 10, 2026 at 06:39 PM -
305b Assessed 2010 River, Lake, Estuary Set: Connecticut 305b Assessed River 2010 is a 1:24,000-scale, line feature-based layer that includes rivers that have been assessed to comply with...
Search relevance: 46.26 | Views last month: 1 | Catalog Last Checked: September 10, 2026 at 06:40 PM
