Northeastern United States Index Town Boundary Polygon includes generalized State, county and town boundaries for Northeastern United States. Includes data for Connecticut, Massachusetts, Maine, New Hampshire, New Jersey, New York, Rhode Island, and Vermont. 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.
Northeastern United States Index Town Boundary Polygon 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.
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 IndexTown 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 and county boundary line errors for all states and county 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.
Feature geometry.
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"
Land Feature - Mainland or island
CT DEP
Water Feature - Marine and selected large fresh waterbody
CT DEP
Connecticut Legend - Classifies features to highlight and differentiate Connecticut from other states.
State of Connecticut, Department of Environmental Protection
State of Connecticut
CT DEP
Maine, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Vermont
CT DEP
Water
CT DEP
Massachusetts Legend - Classifies features to highlight and differentiate Massachusetts from other states.
State of Connecticut, Department of Environmental Protection
Commonwealth of Massachusetts
CT DEP
Connecticut, Maine, New Hampshire, New Jersey, New York, Rhode Island, Vermont
CT DEP
Water
CT DEP
Maine Legend - Classifies features to highlight and differentiate Maine from other states.
State of Connecticut, Department of Environmental Protection
State of Maine
CT DEP
Connecticut, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Vermont
CT DEP
Water
CT DEP
New Hampshire Legend - Classifies features to highlight and differentiate New Hampshire from other states.
State of Connecticut, Department of Environmental Protection
State of New Hampshire
CT DEP
Connecticut, Maine, Massachusetts, New Jersey, New York, Rhode Island, Vermont
CT DEP
Water
CT DEP
New Jersey Legend - Classifies features to highlight and differentiate New Jersey from other states.
State of Connecticut, Department of Environmental Protection
State of New Jersey
CT DEP
Connecticut, Maine, Massachusetts, New Hampshire, New York, Rhode Island, Vermont
CT DEP
Water
CT DEP
New York Legend - Classifies features to highlight and differentiate New York from other states.
State of Connecticut, Department of Environmental Protection
State of New York
CT DEP
Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, Vermont
CT DEP
Water
CT DEP
Rhode Island Legend - Classifies features to highlight and differentiate Rhode Island from other states.
State of Connecticut, Department of Environmental Protection
State of Rhode Island
CT DEP
Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Vermont
CT DEP
Water
CT DEP
Vermont Legend - Classifies features to highlight and differentiate Vermont from other states.
State of Connecticut, Department of Environmental Protection
State of Vermont
CT DEP
Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island
CT DEP
Water
CT DEP
State Code
State of Connecticut, Department of Environmental Protection
No State designation. Used to encode open water features.
CT DEP
State of Connecticut
CT DEP
State of Maine
CT DEP
Commonwealth of Massachusetts
CT DEP
State of New Hampshire
CT DEP
State of New Jersey
CT DEP
State of New York
CT DEP
State of Rhode Island
CT DEP
State of Vermont
CT DEP
State Name
State of Connecticut, Department of Environmental Protection
No State designation. Used to encode open water features.
CT DEP
State of Connecticut
CT DEP
State of Maine
CT DEP
Commonwealth of Massachusetts
CT DEP
State of New Hampshire
CT DEP
State of New Jersey
CT DEP
State of New York
CT DEP
State of Rhode Island
CT DEP
State of Vermont
CT DEP
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.
State of Connecticut, Department of Environmental Protection
No County designation. Used to encode open water features.
CT DEP
Connecticut county code field name
CT DEP
Massachusetts county code field name
CT DEP
Maine county code field name
CT DEP
New Hampshire county code field name
CT DEP
New Jersey county code field name
CT DEP
New York county code field name
CT DEP
Rhode Island county code field name
CT DEP
Vermont county code field name
CT DEP
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.
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.
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.
State of Connecticut, Department of Environmental Protection
No Town designation. Used to encode open water features.
CT DEP
Connecticut town code field name
CT DEP
Massachusetts town code field name
CT DEP
Maine town code field name
CT DEP
New Hampshire town code field name
CT DEP
New Jersey town code field name
CT DEP
New York town code field name
CT DEP
Rhode Island town code field name
CT DEP
Vermont town code field name
CT DEP
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.
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.
State of Connecticut, Department of Environmental Protection
Polygon feature you can label with MAP_LABEL attribute
CT DEP
Polygon feature not to label with MAP_LABEL attribute
CT DEP
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.
State of Connecticut, Department of Environmental Protection
Internal feature number.
ESRI
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.
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.
State of Connecticut, Department of Environmental Protection
Attributes identify and describe the geographic areas and boundaries between states and counties for the States of Connecticut, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, and Vermont. 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, MA_LEGEND, ME_LEGEND, and other similarly named polygon attributes to classify and highlight features in the corresponding state. 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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