Connecticut and Vicinity Index Town Boundary Polygon includes generalized State, county and town boundaries for for Connecticut and nearby portions of Massachusetts, New Jersey, New York and Rhode Island. The index version is a faster drawing representation of towns for use in interactive map applications. The datalayer was derived from Northeast United States Town Boundary Line which provided polygon shapes and Northeast United States Town Boundary Polygon which provided attributes. In the index version boundary lines have been minimally generalized to reduce vertices. Features such as small and medium offshore islands were eliminated and small internal town polygons were merged with a larger neighbor. It may contain some boundary line and county or town name errors for states other than Connecticut.
publication date
Includes line features representing State, county and town boundaries; the shoreline; island shorelines; and lines enclosing open water areas along the outer limits of the data extent. (Source: State of Connecticut, Department of Environmental Protection)
Internal feature number. (Source: ESRI)
Land Class - Distinguishes land from water. This dataset includes a large water polygon feature that may impact polygon drawing performance. To improve drawing performance, exclude all water features by using the following expression in a layer definition query: LAND_CLASS = "Land"
| Value | Definition |
|---|---|
| Land | Land Feature - Mainland or island |
| Water | Water Feature - Marine and selected large fresh waterbody |
Connecticut Legend - Classifies features to highlight and differentiate Connecticut from other states. (Source: State of Connecticut, Department of Environmental Protection)
| Value | Definition |
|---|---|
| Connecticut | State of Connecticut |
| Other States | Massachusetts, New Jersey, New York, Rhode Island |
| Water | Water |
State Code (Source: State of Connecticut, Department of Environmental Protection)
| Value | Definition |
|---|---|
| 'blank' | No State designation. Used to encode open water features. |
| CT | State of Connecticut |
| MA | Commonwealth of Massachusetts |
| NJ | State of New Jersey |
| NY | State of New York |
| RI | State of Rhode Island |
State Name (Source: State of Connecticut, Department of Environmental Protection)
| Value | Definition |
|---|---|
| 'blank' | No State designation. Used to encode open water features. |
| Connecticut | State of Connecticut |
| Massachusetts | Commonwealth of Massachusetts |
| New Jersey | State of New Jersey |
| New York | State of New York |
| Rhode Island | State of Rhode Island |
County Field Name - The name of the attribute in the (original State) data source that stores the county number (county code) value. This is a cross reference back to the original data source. In the (original State) data source, this is the name of the field that stores the value recorded in the CNTY_COD attribute. (Source: State of Connecticut, Department of Environmental Protection)
| Value | Definition |
|---|---|
| 'blank' | No County designation. Used to encode open water features. |
| CNTY_COD | Connecticut county code field name |
| FIPS-COUNTY | Massachusetts county code field name |
| FIPSCO | New Jersey county code field name |
| CNTYC0DE | New York county code field name |
| CFIPS | Rhode Island county code field name |
County Field Value - The county number (county code) value in the (original State) data source that identifies the county. In the (original State), this value is stored in the fieldname referenced by the CNTY_FIELD attribute. These values may not be unique across all states. (Source: State of Connecticut, Department of Environmental Protection)
County Name - Text values that correspond to numeric CNTY_COD attribute values. CNTY_NAME is the English language equivalent of (decodes) the CNTY_COD field. (Source: State of Connecticut, Department of Environmental Protection)
Town Field Name - The name of the attribute in the (original State) data source that stores the town number (town code) value. This is a cross reference back to the original data source. In the (original State) data source, this is the name of the field that stores the value recorded in the TOWN_COD attribute. (Source: State of Connecticut, Department of Environmental Protection)
| Value | Definition |
|---|---|
| 'blank' | No Town designation. Used to encode open water features. |
| TOWN_NO | Connecticut town code field name |
| TOWN-ID | Massachusetts town code field name |
| KEY | New Jersey town code field name |
| SWIS | New York town code field name |
| OSP | Rhode Island town code field name |
Town Field Value - The town name value in the (original State) data source that identifies the town or township. In the (original State), this value is stored in the fieldname referenced by the TOWN_FIELD attribute. (Source: State of Connecticut, Department of Environmental Protection)
Label Flag - Identifies polygons considered to be large and significant enough in size to be labeled on a map with county names. Polygons designated for labeling are assigned LABEL_FLAG values equal to "True", whereas small island polygons along coast, not typically labeled with county names, are assigned LABEL_FLAG values equal to "False". Label selected features with the MAP_LABEL attribute. (Source: State of Connecticut, Department of Environmental Protection)
| Value | Definition |
|---|---|
| True | Polygon feature you can label with MAP_LABEL attribute |
| False | Polygon feature not to label with MAP_LABEL attribute |
Map Label Text - Text values from the CNTY_NAME field used for map labeling purposes. Use the LABEL_FLAG field to query for polygon features to label with this field. (Source: State of Connecticut, Department of Environmental Protection)
Connecticut Map Label - Map label text for Connecticut counties. Use this field to label all Connecticut counties without using the LABEL_FLAG field to query for the appropriate features to label, which is a slower technique. (Source: State of Connecticut, Department of Environmental Protection)
Not Connecticut Map Label - Map label text for all but Connecticut counties. Use this field to label all but Connecticut counties without using the LABEL_FLAG field to query for the appropriate features to label, which is a slower technique. (Source: State of Connecticut, Department of Environmental Protection)
Feature geometry. (Source: ESRI)
Attributes identify and describe the geographic areas and boundaries between states and counties for the States of Connecticut, Massachusetts, New Jersey, New York, and Rhode Island. Use the BOUNDARY attribute to cartographically represent state and county boundary lines. Use the LAND_CLASS attribute to cartographically distinguish land from water polygon features. Use the STATE_COD, STATE_NAME, COUNTY_NAME or MAP_LABEL attributes to label polygon features with state and county names. Use the LABEL_FLAG attribute to identify polygons large enough to label with county names at larger scales using the MAP_LABEL attribute. Or use the CT_LABEL_Y and CT_LABEL_N attributes to label just Connecticut counties or all but Connecticut counties without querying for the appropriate features and labeling them with the MAP_LABEL values, which is a slower technique. Use the CT_LEGEND polygon attribute to classify and highlight features in Connecticut different from the other states. This dataset includes a large water polygon feature that may impact polygon drawing performance. To improve drawing performance, exclude all water features by using the following expression in a layer definition query: LAND_CLASS = "Land"
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Connecticut and Vicinity Index Town Boundary data are intended for geographic display of state, county and town boundaries at statewide and regional levels. Use it to map and label counties in an interactive map where drawing speed is important. Not suitable for analytic or similar GIS uses. This information should be displayed at scales appropriate for 1:100,000-scale data and smaller. The State of Connecticut, Department of Environmental Protection (CTDEP) assembled this regional data layer using data from other states in order to create a single, seamless representation of political boundaries within the vicinity of Connecticut that could be easily incorporated into mapping applications as background information.
All attributes have valid values. These attribute values are directly based on or derived from attribute and or spatial (feature location) information supplied by the respective data sources. This information does not depict official boundaries established by the respective state and municipal governments. It may contain some state and county boundary line errors for all states and county name errors for all states other than Connecticut.
The horizontal positional accuracy of this data is unkown.
This map layer includes boundaries for Connecticut, Massachusetts, Maine, New Hampshire, New Jersey, New York, Rhode Island, and Vermont. Data completeness has been altered from the original through elimination of features consistant with the goal of creating simplified, faster drawing data.
Polygon features conform to the following topological rules. Polygons are single part. There are no duplicate polygons. Polygons do not self overlap. Polygons do not overlap other polygons. Polygons are bound by lines. Line features conform to the following topological rules. Lines are single part. There are no duplicate lines. Lines do not self overlap. Lines do not overlap other lines. Lines intersect only at nodes, and nodes anchor the ends of all lines. Lines do not overshoot or undershoot other lines they are supposed to meet and intersect. The tests of logical consistency were not performed.
No restrictions or legal prerequisites for using the data. The data is suitable for use at appropriate scale, and is not intended for maps printed at scales greater or more detailed than 1:100,000 scale. 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 data publisher. For example, include the following data source description when printing this layer on a map: Political Boundaries - From the Northeastern United States IndexTown Boundary layer, published by CT DEP.
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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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