Connecticut and Vicinity Index Town Boundary Line includes generalized State, County and Town boundaries for Connecticut and nearby portions of Massachusetts, New Jersey, New York and Rhode Island. The index version is a faster drawing representation of boundaries for use in interactive map applications. The data layer was derived from Northeast United States Town Boundary Line. In the index version boundary lines have been minimally generalized to reduce vertices. Features such as small and medium offshore islands were eliminated. It may contain some boundary line and county or town name errors for states other than Connecticut.
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 towns 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.
publication date
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 Index Town Boundary layer, published by CT DEP.
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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, county and town boundary line errors for all states, county and town name errors for all states other than Connecticut.
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.
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.
The horizontal positional accuracy of this data is unkown.
Internal feature number.
ESRI
Boundary - Type of Political Boundary
State of Connecticut, Department of Environmental Protection
Closure Line - Encloses water polygon features along the outer limits of data extent. Not a political boundary.
CT DEP
County Boundary - Political boundary between adjacent counties in the same state
CT DEP
Shoreline - Outlines water polygon features. Not a political boundary.
CT DEP
State Boundary - Political boundary between adjacent states
CT DEP
Town Boundary - Political boundary between adjacent towns in the same state and county
CT DEP
Data Source - Identifies the data source used to define the geometry (shape) of the line feature. Refer to list of Data Sources included in this Metadata for detailed description of State data sources used.
State of Connecticut, Department of Environmental Protection
No data source
CT DEP
Line feature based on data from Connecticut
CT DEP
Line feature based on data from Massachusetts
CT DEP
Line feature based on data from New Jersey
CT DEP
Line feature based on data from New York
CT DEP
Line feature based on data from Rhode Island
CT DEP
Map Legend - Type of Political Boundary. Line features encoded as County by the BOUNDARY attribute are encoded as Town (boundary) features by the LEGEND attribute in order to make for a simpler map legend.
State of Connecticut, Department of Environmental Protection
Closure Line - Encloses water polygon features along the outer limits of data extent. Not a political boundary.
CT DEP
Shoreline - Outlines water polygon features. Not a political boundary.
CT DEP
State Boundary - Political boundary between adjacent states
CT DEP
Town Boundary - Political boundary between adjacent towns in the same state and county
CT DEP
Feature geometry.
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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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.
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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