Connecticut 305b Assessed Estuary 2006 is a 1:24,000-scale, polygon feature-based layer that includes 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 layer is based on information collected and compiled prior to 2006. It represents conditions at a particular point in time and does not represent current conditions. This layer includes only estuaries that were assessed in the time period above referenced. It can be used with the 2006 Connecticut 305b Assessed Lakes layer and the Connecticut 305b Assessed Rivers layer to geographically display attainment and non-attainment for each designated use on assessed waters within Connecticut's boundaries. Features are polygon locations that represent the locations of assessed estuaries. The sources for these features include the hydrography layer and the water quality classification layer. Attribute information is comprised of a unique identifier (segment Id) for each feature, a description of the waterbody, its location, the assessment cycle (year), the water type, the water quality class, the size in square miles, and the assessment for the following categories: marine aquatic life, recreation, fish consumption, and shellfish. Data is compiled at 1:24,000 scale. This dataset is not updated. For more information, please refer to the following report: "2006 Integrated Water Quality Report" at http://www.ct.gov/dep/lib/dep/water/water_quality_management/305b/2006_305(b)fullplusapps.pdf
For additional information, refer to the Water Quality Standards for the State of Connecticut at http://www.ct.gov/dep/lib/dep/water/water_quality_standards/wqs.pdf.
ground condition
Connecticut 305b Assessed Estuaries represented as polygon features. (Source: State of Connecticut, Department of Environmental Protection)
Internal feature number. (Source: ESRI)
Feature geometry. (Source: ESRI)
Size of feature in acres. (Source: Connecticut Department of Environmental Protection)
Reporting year. (Source: Connecticut Department of Environmental Protection)
| Value | Definition |
|---|---|
| 2006 | Reporting date. |
Size of feature in square miles. (Source: Connecticut Department of Environmental Protection)
Assigned unique identification. (Source: Connecticut Department of Environmental Protection)
Unique name of feature. Decodes ID305B field. (Source: Connecticut Department of Environmental Protection)
Detailed description of feature location. (Source: Connecticut Department of Environmental Protection)
Assessment of feature in terms of recreation use. (Source: Connecticut Department of Environmental Protection)
| Value | Definition |
|---|---|
| Fully Supporting | Recreation use is fully supported for this feature. |
| Not Assessed | Recreation use is not assessed for this feature. |
| Not Supporting | Recreation use is not supported for this feature. |
Type of waterbody. (Source: Connecticut Department of Environmental Protection)
| Value | Definition |
|---|---|
| Estuary | All features have a water type of Estuary. |
Assessment of feature in terms of fish consumption. (Source: Connecticut Department of Environmental Protection)
| Value | Definition |
|---|---|
| Fully Supporting | Fish consumption use is fully supported for this feature. |
| Not Supporting | Fish consumption is not supported for this feature. |
Assessment of feature in terms of shellfish harvesting. (Source: Connecticut Department of Environmental Protection)
| Value | Definition |
|---|---|
| Fully Supporting Commercial Harvesting where Authorized | Commercial harvesting use is fully supported for this feature. |
| Fully Supporting Harvesting for Direct Consumption | Harvesting for direct consumption of shellfish is a fully supported use of this feature. |
| Not Assessed Commercial Harvesting where Authorized | This feature is not assessed for commercial harvesting. |
| Not Evaluated, Natural Conditions Not Viable For Shellfish | This feature is not viable for the existence of shellfish. |
| Not Supported Commercial Harvesting where Authorized | Commercial harvesting use is not supported for this feature. |
| Not Supporting Harvesting for Direct Consumption | Harvesting for direct consumption of shellfish is not a supported use of this feature. |
Assessment of feature in terms of the viability of aquatic marine life. (Source: Connecticut Department of Environmental Protection)
| Value | Definition |
|---|---|
| Fully Supporting | Aquatic marine life is fully supported for this feature. |
| Not Assessed | Aquatic marine life viability is not assessed for this feature. |
| Not Supporting | Aquatic marine life viability is not supported for this feature. |
The water quality classification goal for this feature. (Source: Connecticut Department of Environmental Protection)
| Value | Definition |
|---|---|
| SA | This feature's water quality classification goal is SA. |
| SB | This feature's water quality classification goal is SB. |
Includes assessed estuary features to include size of feature in acres and square miles, the reporting year (assessment year), unique identification, name and location of feature, water quality class goal, type of waterbody, and categories assessed: marine aquatic life viability, recreation, fish consumption, and shellfish harvesting. Use the ID305B field to uniquely identify features. The Name attribute decodes ID305B. Use either the Name attribute or the ID305B attribute to label features on a map. To define a layer that only includes a certain assessment of a feature type, query the features for a specific attribute (e.g. Recreation) equal to a specific value (e.g. Not Supporting). This will display only those features where the Recreation use is Not Supporting.
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Connecticut 305(b) Assessed Estuary 2006 is 1:24,000-scale data. It depicts the location of assessed estuaries along Long Island Sound, including all Connecticut coastal river estuaries to the extent of salt water influence. Use this layer to show estuary locations and their accompanying use assessment . This layer should be used with the other assessed waterbody layers: Assessed Rivers and Assessed Lakes. To gain a historical perspective, use this layer with the 2008 Assessed Waters layers. This layer should only be viewed with other 1:24,000-scale map data such as water quality classifications, roads, towns, topographic quadrangles, and digital orthophotos. Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.)
Some hydrographic features were copied from this dataset.
Some feature attribute information originated from the water quality classification feature class created by the Department of Environmental Protection.
There are no restrictions or legal prerequisites for using the data after access is granted. The data is suitable for use at appropriate scale, and is not intended for maps printed at scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet). Although this data set has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata. When printing this data on a map or using it in a software application, analysis, or report, please acknowledge the State of Connecticut, Department of Environmental Protection as the source for this information. For example, include the following data source description when printing this layer on a map: Estuarine Assessment - From the Connecticut 305b Assessed Estuary 2006 layer, compiled and published by CT DEP. Source map scale is 1:24,000. This data is accurate in the time period specified for data collection dates. Refer to the "2006 Integrated Water Quality Report" at http://www.ct.gov/dep/lib/dep/water/water_quality_management/305b/2006_305(b)fullplusapps.pdf and the "Consolidated Assessment & Listing Methodology (CALM) report at http://www.ct.gov/dep/lib/dep/water/water_quality_management/calm/ctcalm_2006.pdf for more information about collection dates.
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Although this data set has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata.
| Data format: | in format Shapefile, Feature Class (version ArcGIS) |
|---|---|
| Network links: | http://www.ct.gov/deep |
The data distributor does not provide custom GIS analysis or mapping services. Data is available in a standard format and may be converted to other formats, projections, coordinate systems, or selected for specific geographic regions by the party receiving the data.
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