Connecticut USGS 7.5 Minute Quadrangle Index

+ Resource Description

Citation

Information used to reference the data.

Title: Connecticut USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor and publisher)

Publisher: State of Connecticut, Department of Environmental Protection

Publication place: Hartford, Connecticut, USA

Publication date: 1985

Edition: 2005

Data type: vector digital data

Data location: http://www.ct.gov/deep

Other citation details: The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use. The 2005 Edition includes that same spatial data originally published in 1985. However, the 2005 Edition has undergone a NADCON conversion from NAD27 to NAD83 and includes metadata.

Description

A characterization of the data, including its intended use and limitations.

Abstract: This is an index of the 1:24,000-scale U.S. Geological Survey (USGS) 7.5-minute topographic quadrangle maps that cover the State of Connecticut. The index includes a polygon feature for each 7.5-minute quadrangle area. All polygon feature boundaries correspond exactly with the quadrangle boundaries depicted on the 7.5-minute topographic quadrangle maps published by the USGS because both are based on the Connecticut State Plane Coordinate System, North American Datum of 1927 (NAD27). Each polygon feature defines the same geographic area shown on the corresponding 1:24,000-scale USGS 7.5-minute topographic quadrangle map. Note, polygon attribute information is comprised of codes to uniquely identify individual quadrangle areas. This is static information that is not subject to change.

Purpose: Use this layer to define the geographic area encompassed by the currently available set of 7.5-minute quadrangle maps published by the USGS, which are based on the Connecticut State Plane Coordinate System, North American Datum of 1927 (NAD27). For example, this layer can be used to clip or spatially query for map features in other layers that are located on a particular USGS 7.5-minute topographic quadrangle map. The polygon boundaries for this layer were not manually digitized but rather mathematically generated by projecting the latitude and longitude coordinate values that define the corners of the 7.5 minute quadrangle maps to the Connecticut State Plane Coordinate System, NAD27. Subsequently, these NAD27-based polygon areas were converted to the Connecticut State Plane Coordinate System, North American Datum of 1983 (NAD83) for consistency with other spatial data in NAD83. This geographic conversion or transformation process is commonly referred to as the North American Datum Conversion (NADCON) from NAD27 to NAD83. NADCON is the Federal standard for NAD27 to NAD83 datum transformations and is a tool for transforming coordinate values between datums. It does not improve the accuracy of the data. Also, it is important to note that as of the year this metadata was written (2005), all quadrangle maps for Connecticut were based on (published in) Connecticut State Plane Coordinate System, NAD27. None have been republished by the USGS in Connecticut State Plane Coordinate System, NAD83. For a true NAD83-based index, refer to a layer named USGS 7.5 Minute Quadrangle Index (NAD83 Area), which was generated by mathematically projecting the 7.5-minute latitude and longitude quadrangle corner coordinates directly to the Connecticut State Plane Coordinate System, NAD83.

Supplemental information: CT DEP Quadrangle Numbers - The Connecticut Department of Environmental Protection established the following quadrangle numbers to uniquely identify 7.5 minute topographic quadrangle areas - Bashbish Falls MA-CT-NY (1), Ashley Falls MA-CT (2), South Sandisfield MA-CT (3), Tolland Center MA-CT (4), West Granville MA-CT (5), Southwick MA-CT (6), West Springfield MA-CT (7), Springfield South MA-CT (8), Hampden MA-CT (9), Monson MA-CT (10), Wales MA-CT (11), Southbridge MA-CT (12), Webster MA-CT (13), Oxford MA-CT-RI (14), Millerton NY-CT (15), Sharon CT-NY (16), South Canaan CT (17), Norfolk CT (18), Winsted CT (19), New Hartford CT (20), Tariffville CT-MA (21), Windsor Locks CT (22), Broad Brook CT (23), Ellington CT (24), Stafford Springs CT (25), Westford CT (26), Eastford CT (27), Putnam CT (28), Thompson CT-RI (29), Amenia NY-CT (30), Ellsworth CT (31), Cornwall CT (32), West Torrington CT (33), Torrington CT (34), Collinsville CT (35), Avon CT (36), Hartford North CT (37), Manchester CT (38), Rockville CT (39), Coventry CT (40), Spring Hill CT (41), Hampton CT (42), Danielson CT (43), East Killingly CT-RI (44), Dover Plains NY-CT (45), Kent CT (46), New Preston CT (47), Litchfield CT (48), Thomaston CT (49), Bristol CT (50), New Britain CT (51), Hartford South CT (52), Glastonbury CT (53), Marlborough CT (54), Columbia CT (55), Willimantic CT (56), Scotland CT (57), Plainfield CT (58), Oneco CT-RI (59), Pawling NY-CT (60), New Milford CT (61), Roxbury CT (62), Woodbury CT (63), Waterbury CT (64), Southington CT (65), Meriden CT (66), Middletown CT (67), Middle Haddam CT (68), Moodus CT (69), Colchester CT (70), Fitchville CT (71), Norwich CT (72), Jewett City CT (73), Voluntown CT-RI (74), Brewster NY-CT (75), Danbury CT (76), Newtown CT (77), Southbury CT (78), Naugatuck CT (79), Mount Carmel CT (80), Wallingford CT (81), Durham CT (82), Haddam CT (83), Deep River CT (84), Hamburg CT (85), Montville CT (86), Uncasville CT (87), Old Mystic CT (88), Ashaway RI-CT (89), Peach Lake NY-CT (90), Bethel CT (91), Botsford CT (92), Long Hill CT (93), Ansonia CT (94), New Haven CT (95), Branford CT (96), Guilford CT (97), Clinton CT (98), Essex CT (99), Old Lyme CT (100), Niantic CT (101), New London CT-NY (102), Mystic CT-NY-RI (103), Watch Hill RI-CT (104), Mount Kisco NY-CT (105), Pound Ridge NY-CT (106), Norwalk North CT-NY (107), Westport CT (108), Bridgeport CT (109), Milford CT (110), Woodmont CT (111), Glenville CT-NY (112), Stamford CT (113), Norwalk South CT (114), Sherwood Point CT-NY (115), Mamaroneck NY-CT (116), Unpublished Quad (1213), Unpublished Quad (1214), Unpublished Quad (1215), Unpublished Quad (1216), Orient NY (1217), Plum Island NY (1218), Unpublished Quad (1310), Unpublished Quad (1311), Unpublished Quad (1312), Unpublished Quad (1313), Bayville NY (1407), and Lloyd Harbor NY (1408).

The USGS does not publish 7.5 minute topographic quadrangle maps for quad numbers 1213, 1214, 1215, 1216, 1310, 1311, 1312, and 1313. These quadrangles are either located in the middle of Long Island Sound (and are entirely coved by water) or include small land areas along the coast shown on the southern margins of the Branford CT (96), Guilford CT (97), Clinton CT (98) topographic quadrangle maps. The Branford, Guilford, and Clinton topographic maps include areas along the Connecticut shoreline slightly beyond their southern quadrangle boundary, which is defined as 41 degrees and 15 minutes of latitude. The additionally mapped areas on these 3 quadrangle maps include locations such as the Thimble Islands, Sachems Head, and Hammonnasset Point. These areas are actually located on unpublished quadrangles located to the south of the Branford, Guilford, and Clinton quadrangles - numbers 1213, 1214, and 1215. Unpublished quadrangle 1214 also covers Faulkners Island, which is in Long Island Sound off Guilford, Connecticut.

The Orient NY (1217), Plum Island NY (1218), Bayville NY (1407), and Lloyd Harbor NY (1408) quadrangles include portions of Connecticut waters along the Connecticut-New York state boundary in Long Island Sound in addition to sections of Long Island, New York. These quadrangle maps do not contain any Connecticut landmass.

Language of dataset: en

Point Of Contact

Contact information for the individual or organization that is knowledgeable about the data.

Organization: State of Connecticut, Department of Environmental Protection

Person: Howie Sternberg

Phone: 860-424-3540

Fax: 860-424-4058

Email: dep.gisdata@ct.gov

Hours of service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time

Address type: mailing and physical address

Address: 79 Elm Street

City: Hartford

State or Province: Connecticut

Postal code: 06106-5127

Country: USA

Data Type

How the data are represented, formatted and maintained by the data producing organization.

File or table name: depgis.DEP.QUAD_INDEX

Data type: vector digital data

Data format: SDE Feature Class

Native dataset environment: These data are maintained by the State of Connecticut using ArcGIS software developed by Environmental Systems Research Institute (ESRI) in a Microsoft Windows operating system environment.

Time Period of Data

Time period(s) for which the data corresponds to the currentness reference.

Date: not applicable

Currentness reference: publication date

Status

The state of and maintenance information for the data.

Data status: Complete

Update frequency: None planned

Key Words

Words or phrases that summarize certain aspects of the data.

Theme:

Keywords: 7.5 minute, quadrangle map, index, USGS

Keyword thesaurus: None

Theme:

Keywords: boundaries, location

Keyword thesaurus: ISO 19115 Topic Category

Place:

Keywords: Connecticut, CT

Keyword thesaurus: U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (Federal Information Processing Standard 5-2): Washington, DC, National Institute of Standards and Technology.

Place:

Keywords: United States of America, USA

Keyword thesaurus: U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions (Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.

Data Access Constraints

Restrictions and legal prerequisites for accessing or using the data after access is granted.

Access constraints: None. The data is in the public domain and may be redistributed.

Use constraints: 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 1:24,000 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: Quadrangle Boundary - From the USGS 7.5 Minute Quadrangle Index layer, published by the CT DEP. Source map scale is 1:24,000.

+ Graphic Example

Browse Graphic

Graphic illustration of the data.

Browse graphic 1

Open - Full view of Connecticut USGS 7.5 Minute Quadrangle Index

Browse graphic 2

Open - View of Connecticut USGS 7.5 Minute Quadrangle Index with the Spring Hill, Connecticut Quadrangle (quad 41)

Browse graphic 3

Open - Detail view of Connecticut USGS 7.5 Minute Quadrangle Index boundaries registering with the corner of a USGS topographic quadrangle map which was published in NAD27

+ Spatial Reference Information

Horizontal Coordinate System

Reference system from which linear or angular quantities are measured and assigned to the position that a point occupies.

Projected coordinate system:

Name: NAD 1983 StatePlane Connecticut FIPS 0600 Feet

Map units: survey feet

Geographic coordinate system:

Name: GCS North American 1983

Coordinate System Details

Map projection

Map projection name: Lambert Conformal Conic

Standard parallel: 41.200000

Standard parallel: 41.866667

Longitude of central meridian: -72.750000

Latitude of projection origin: 40.833333

False easting: 999999.999996

False northing: 499999.999998

Planar Coordinate Information

Planar coordinate encoding method: coordinate pair

Coordinate representation:

Abscissa resolution: 0.000250

Ordinate resolution: 0.000250

Planar distance units: survey feet

Geodetic model

Horizontal datum name: North American Datum of 1983

Ellipsoid name: Geodetic Reference System 80

Semi-major axis: 6378137.000000

Denominator of flattening ratio: 298.257222

Vertical Coordinate System

Reference system from which vertical distances (altitudes or depths) are measured.

Altitude system definition:

Altitude resolution: 1.000000

Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

Spatial Domain

The geographic areal domain of the data that describes the western, eastern, northern, and southern geographic limits of data coverage.

Bounding Coordinates

In Projected or local coordinates

NAD 1983 StatePlane Connecticut FIPS 0600 Feet

Boundary	Coordinate
Left	723555.938000 (survey feet)
Right	1275115.125000 (survey feet)
Top	972265.687000 (survey feet)
Bottom	515841.656000 (survey feet)

In Unprojected coordinates (geographic)

GCS North American 1983

Boundary	Coordinate
West	-73.768995 (longitude)
East	-71.735903 (longitude)
North	42.129407 (latitude)
South	40.872423 (latitude)

+ Data Structure and Attribute Information

Overview

Summary of the information content of the data, including other references to complete descriptions of entity types, attributes, and attribute values for the data.

Entity and attribute overview: Use the QUAD_NO attribute to uniquely identify features.

Direct spatial reference method: Vector

Indirect spatial reference method: State of Connecticut, United States of America

Attributes of Connecticut USGS 7.5 Minute Quadrangle Index

Detailed descriptions of entity type, attributes, and attribute values for the data.

Name: depgis.DEP.QUAD_INDEX

Type of object: Feature Class

Geometry type: Polygon

Number of records: 128

Description: USGS 7.5 Minute Topographic Quadrangle areas represented as polygon features.

Source: State of Connecticut, Department of Environmental Protection

Attributes

OBJECTID

Definition: Internal feature number.

Alias: OBJECTID Type: OID Width: 4 Precision: 10 Scale: 0

Attribute values: Sequential unique whole numbers that are automatically generated.

Attribute definition source: ESRI

QUAD_NO

Definition: Quadrangle Number - An ID number designated by the State of Connecticut, Department of Environmental Protection, Natural Resources Center in the 1980's to uniquely identify individual quadrangle maps.

Alias: QUAD_NO Type: SmallInteger Width: 2 Precision: 5 Scale: 0Output width: 4

Attribute values: Numeric value. Quadrangle maps published by the USGS that cover the Connecticut mainland and coastal area are assigned numeric values ranging from 1-116. Other quadrangle areas that encompass the waters of Connecticut in Long Island Sound are assigned numeric values range from 1213 to 1218, 1310 to 1313, and 1407 to 1408.

Attribute definition source: State of Connecticut, Department of Environmental Protection

QUADRANGLE

Definition: Quadrangle Name - Name of the quadrangle map published by the USGS

Alias: QUADRANGLE Type: String Width: 17 Precision: 0 Scale: 0Output width: 17

Attribute values: Text value

Attribute definition source: US Geological Survey

SHAPE

Definition: Feature geometry.

Alias: Shape Type: Geometry Width: 4 Precision: 0 Scale: 0

Attribute values: Coordinates defining the features.

Attribute definition source: ESRI

SHAPE.area

Alias: SHAPE.area Type: Double Width: 0 Precision: 0 Scale: 0

SHAPE.len

Alias: SHAPE.len Type: Double Width: 0 Precision: 0 Scale: 0

ESRI Feature Description

Description of spatial objects in the data using the Environmental Systems Research Institute (ESRI) terminology.

Environmental Systems Research Institute (ESRI) terms

depgis.DEP.QUAD_INDEX

ESRI feature type: Simple

Geometry type: Polygon

Topology: FALSE

Feature count: 128

Spatial index: TRUE

Linear referencing: FALSE

SDTS Feature Description

Description of point and vector spatial objects in the data using the Spatial Data Transfer Standards (SDTS) terminology.

Spatial data transfer standard (SDTS) terms

depgis.DEP.QUAD_INDEX

Type: G-polygon

Count: 128

+ Data Quality and Accuracy Information

General

Information about the fidelity of relationships, data quality and accuracy tests, omissions, selection criteria, generalization, and definitions used to derive the data.

Logical consistency report: 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. The tests of logical consistency were performed by the State of Connecticut using ESRI ArcInfo software to maintain feature topology in ArcInfo coverage format. The data is topologically clean. The ArcInfo Clean function was repeatedly used following edits to verify topology and enforce a minimum distance between vertices of 4 feet (fuzzy tolerance) and a minimum allowed overshoot length of 0 (zero) feet (dangle length).

Completeness report: The degree of completeness is based on the extent to which the data covers the geographic area of the State of Connecticut. The layer is complete because it includes quadrangle index polygon features for all of Connecticut, including areas defined by 7.5 minutes of latitude and longitude where the USGS published 1:24,000-scale topographic quadrangle maps and areas of 7.5 minutes of latitude and longitude entirely covered by water (in Long Island Sound) where the USGS did not publish 7.5 minute topographic quadrangle maps.

Attribute Accuracy

Accuracy of the identification of data entities, features and assignment of attribute values.

Attribute accuracy report: The USGS 7.5 Minute Topographic Quadrangle Index layer depicts the quadrangle boundary feature type shown on the 7.5 minute USGS topographic quadrangle maps as polygon features with boundaries originally based on a NAD27 horizontal datum used by the USGS to publish the topographic quadrangle maps. All attributes have valid values. Values are within defined domains. The accuracy test for the QUAD_NO attribute values was conducted by manually entering and visually inspecting and verifying the values. The QUADRANGLE attribute is the English language equivalent of (decodes) the QUAD_NO field values and was populated by joining the feature attribute data table to a lookup data table with QUAD_NO used as the relate key field. This lookup data table contain records with information that account for the unique occurrences of QUAD_NO.

Positional Accuracy

Accuracy of the positional aspects of the data.

Horizontal accuracy report: The horizontal positional accuracy of this data complies with the United States National Map Accuracy Standards for 1:24,000 scale maps. According to this standard, not more than 10 percent of the locations tested are to be in error by more than 1/50 inch (40 feet) measured on the publication scale of a USGS 7.5 minute topographic quadrangle map.

+ Data Source and Process Information

Data Sources

Information about the source data used to construct or derive the data.

Data source information

Source 1 - tics.txt

Title: Polygon corner tic coordinates

Originators: State of Connecticut, Department of Environmental Protection

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Data type: tabular digital data

Map scale denominator: not applicable

Media: disc

Source contribution: Coordinates defining corners of 7.5 minute quadangle maps used to generate Tic registration features (Tic ID, Longitude, Latitude). Example values for one row of quadrangles:

806,-73.75000,41.75000

807,-73.62500,41.75000

808,-73.50000,41.75000

809,-73.37500,41.75000

810,-73.25000,41.75000

811,-73.12500,41.75000

812,-73.00000,41.75000

813,-72.87500,41.75000

814,-72.75000,41.75000

815,-72.62500,41.75000

816,-72.50000,41.75000

817,-72.37500,41.75000

818,-72.25000,41.75000

819,-72.12500,41.75000

820,-72.00000,41.75000

821,-71.87500,41.75000

822,-71.75000,41.75000

823,-71.62500,41.75000

906,-73.75000,41.62500

907,-73.62500,41.62500

908,-73.50000,41.62500

909,-73.37500,41.62500

910,-73.25000,41.62500

911,-73.12500,41.62500

912,-73.00000,41.62500

913,-72.87500,41.62500

914,-72.75000,41.62500

915,-72.62500,41.62500

916,-72.50000,41.62500

917,-72.37500,41.62500

918,-72.25000,41.62500

919,-72.12500,41.62500

920,-72.00000,41.62500

921,-71.87500,41.62500

922,-71.75000,41.62500

923,-71.62500,41.62500

Date: 1985

Currentness reference: publication date

Source 2 - Index

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Map scale denominator: 24000

Media: disc

Source contribution: Index is in ArcInfo coverage format with polygon and tic features.

Date: 1985

Currentness reference: publication date

Source 3 - Index27

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor, and publisher)

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Edition: 2005

Data location: http://www.ct.gov/deep

Map scale denominator: 24000

Media: disc

Source contribution: Index 27 is in ArcInfo coverage format with polygon and tic features.

Date: 1985

Currentness reference: publication date

Source 4 - Quad_Index.shp

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor, and publisher)

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Edition: 2005

Data type: vector digital data

Data location: http://www.ct.gov/deep

Map scale denominator: 24000

Media: disc

Source contribution: Quad_Index.shp is in ESRI Shapefile format with polygon features.

Date: 1985

Currentness reference: publication date

Source 5 - Quad_Index

Title: Connecticut USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor and publisher)

Publisher: State of Connecticut, Department of Environmental Protection

Publication place: Hartford, Connecticut, USA

Publication date: 1985

Edition: 2005

Data type: vector digital data

Data location: http://www.ct.gov/deep

Map scale denominator: 24000

Media: disc

Source contribution: Quad Index is in GeoDatabase Feature Class format

Date: 1985

Currentness reference: publication date

Process Steps

Information about events, parameters, tolerances and techniques applied to construct or derive the data.

Process step information

Process Step 1

Process description: Create Quadrangle Index - The quadrangle index polygon and tic registration features were mathematically created using ArcInfo 4 software to generate boundary line and tic registration features from latitude and longitude values that define the corners of the USGS 7.5 minute topographic quadrangle map that cover the State of Connecticut. For example, an initial ArcInfo coverage was generated to store (preliminary quadrangle boundary) line features based on a fishnet-type grid orientation with an origin of -73.45,40.875 (SW corner of quad 116), an upper left coordinate of -73.75,42.25 (NW corner of quad 406), an upper right coordinate of -71.625,42.25 (NE corner of quad 422), and a cell size of 0.125,0.125 (7.5 minutes). These features represented lines of latitude and longitude spaced at 7.5-minute intervals. Tic features were also generated and added to this coverage base on coordinate values from Source 1 (tics.txt). Spatial data was initially represented in Geographic Coordinates (unprojected units of latitude and longitude). In preparation for projecting the data to the Connecticut State Plane Coordinate System, five evenly spaced vertices were programmatically added along all quadrangle boundaries. This would allow line features to properly curve at vertex locations as opposed to simply projecting a straight line between quadrangle corners. The USGS 7.5 minute topographic quadrangle map are published in the Connecticut State Plane Coordinate System of 1927 (NAD27) so the quadrangle boundaries shown on these maps are not depicted as straight lines. Five vertices were programmatically added to each quadrangle boundary line feature at an interval of 0.021 minutes (0.125 / 6 = 0.021). Note, five vertices require 6 segments. ArcInfo coverage Fuzzy and Dangle tolerance settings were set to 4 and 0 (zero) feet, respectively. Based on the line feature geometry, polygon features were built and added to the Quadrangle Index Coverage, followed by manually attributing each polygon feature with the corresponding quadrangle number and quadrangle name information. Using ArcInfo 4 software, the coverage was projected from Geographic Coordinates to the Connecticut State Plane Coordinate System, North American Datum of 1927 (NAD27) to match the datum used by the USGS to publish the 1:24,000-scale 7.5 minute topographic quadrangle map series. The name of the resulting ArcInfo Coverage is INDEX.

Organization: State of Connecticut, Department of Environmental Protection

Person: Jonathan Scull

Process date: 1985

Process software and version: ArcInfo 4

Data Source used

Source 1 - tics.txt

Title: Polygon corner tic coordinates

Originators: State of Connecticut, Department of Environmental Protection

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Data type: tabular digital data

Map scale denominator: not applicable

Media: disc

Source contribution: Coordinates defining corners of 7.5 minute quadangle maps used to generate Tic registration features (Tic ID, Longitude, Latitude). Example values for one row of quadrangles:

806,-73.75000,41.75000

807,-73.62500,41.75000

808,-73.50000,41.75000

809,-73.37500,41.75000

810,-73.25000,41.75000

811,-73.12500,41.75000

812,-73.00000,41.75000

813,-72.87500,41.75000

814,-72.75000,41.75000

815,-72.62500,41.75000

816,-72.50000,41.75000

817,-72.37500,41.75000

818,-72.25000,41.75000

819,-72.12500,41.75000

820,-72.00000,41.75000

821,-71.87500,41.75000

822,-71.75000,41.75000

823,-71.62500,41.75000

906,-73.75000,41.62500

907,-73.62500,41.62500

908,-73.50000,41.62500

909,-73.37500,41.62500

910,-73.25000,41.62500

911,-73.12500,41.62500

912,-73.00000,41.62500

913,-72.87500,41.62500

914,-72.75000,41.62500

915,-72.62500,41.62500

916,-72.50000,41.62500

917,-72.37500,41.62500

918,-72.25000,41.62500

919,-72.12500,41.62500

920,-72.00000,41.62500

921,-71.87500,41.62500

922,-71.75000,41.62500

923,-71.62500,41.62500

Date: 1985

Currentness reference: publication date

Data Source produced

Source 2 - Index

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Map scale denominator: 24000

Media: disc

Source contribution: Index is in ArcInfo coverage format with polygon and tic features.

Date: 1985

Currentness reference: publication date

Process Step 2

Process description: Datum conversion - Using ESRI ArcInfo software, the Hydrography Master layer was converted from the Connecticut State Plane Coordinate System of 1927 (NAD27) to the Connecticut State Plane Coordinate System of 1983 (NAD83). The North American Datum Conversion (NADCON) data transformation was used.

Organization: State of Connecticut, Department of Environmental Protection

Person: Howie Sternberg

Process date: 1999

Process software and version: ArcInfo 7

Data Source used

Source 2 - Index

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Map scale denominator: 24000

Media: disc

Source contribution: Index is in ArcInfo coverage format with polygon and tic features.

Date: 1985

Currentness reference: publication date

Data Source produced

Source 3 - Index27

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor, and publisher)

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Edition: 2005

Data location: http://www.ct.gov/deep

Map scale denominator: 24000

Media: disc

Source contribution: Index 27 is in ArcInfo coverage format with polygon and tic features.

Date: 1985

Currentness reference: publication date

Process Step 3

Process description: Export to Shapefile Format - Converted polygon feature data from ArcInfo Coverage named INDEX27 to a Shapefile named Quad_Index.shp. Excluded the AREA, PERIMETER, INDEX27#, and INDEX27-ID attributes from the Shapefile because their values are only maintained by ArcInfo software with data that is in ArcInfo Coverage format.

Organization: State of Connecticut, Department of Environmental Protection

Person: Howie Sternberg

Process date: 2005

Process software and version: ArcGIS 9.1

Data Source used

Source 3 - Index27

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor, and publisher)

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Edition: 2005

Data location: http://www.ct.gov/deep

Map scale denominator: 24000

Media: disc

Source contribution: Index 27 is in ArcInfo coverage format with polygon and tic features.

Date: 1985

Currentness reference: publication date

Data Source produced

Source 4 - Quad_Index.shp

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor, and publisher)

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Edition: 2005

Data type: vector digital data

Data location: http://www.ct.gov/deep

Map scale denominator: 24000

Media: disc

Source contribution: Quad_Index.shp is in ESRI Shapefile format with polygon features.

Date: 1985

Currentness reference: publication date

Process Step 4

Process description: Convert to GeoDatabase Feature Class format - Defined new Feature Class named Quad_Index; and imported the attribute definitions, loaded features and imported metadata from Quad_Index.shp shapefile.

Spatial Reference Properties for Feature Class:

Coordinate System: NAD_1983_StatePlane_Connecticut_FIPS_0600_Feet

XY Domain MinX: 100000; MaxX: 2247483.645

XY Domain MinY: 200000; MaxY: 2347483.645

Precision: 1000

Organization: State of Connecticut, Department of Environmental Protection (data compiler, editor, publisher)

Person: Howie Sternberg

Phone: 860-424-3540

Address type: mailing and physical address

Address: 79 Elm Street

City: Hartford

State or Province: Connecticut

Postal code: 06106

Country: USA

Process date: 20060101

Process software and version: ArcGIS 9.1

Data Source used

Source 4 - Quad_Index.shp

Title: USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor, and publisher)

Publisher: State of Connecticut

Publication place: Hartford, Connecticut

Publication date: 1985

Edition: 2005

Data type: vector digital data

Data location: http://www.ct.gov/deep

Map scale denominator: 24000

Media: disc

Source contribution: Quad_Index.shp is in ESRI Shapefile format with polygon features.

Date: 1985

Currentness reference: publication date

Data Source produced

Source 5 - Quad_Index

Title: Connecticut USGS 7.5 Minute Quadrangle Index

Originators: State of Connecticut, Department of Environmental Protection (data compiler, editor and publisher)

Publisher: State of Connecticut, Department of Environmental Protection

Publication place: Hartford, Connecticut, USA

Publication date: 1985

Edition: 2005

Data type: vector digital data

Data location: http://www.ct.gov/deep

Map scale denominator: 24000

Media: disc

Source contribution: Quad Index is in GeoDatabase Feature Class format

Date: 1985

Currentness reference: publication date

ESRI geoprocessing history

Description of ESRI geoprocessing commands, settings, and tolerances applied to the data.

ESRI geoprocessing command information

1 CopyFeatures_57

Date: 20081215 Time: 162027

Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures

Command issued: CopyFeatures "Database Connections\10.18.8.94.depgis@DEP.sde\depgis.DEP.QUAD_INDEX" "Database Connections\062174-svr.depgis@DEP.sde\depgis.DEP.QUAD_INDEX" DEPFEATURESTATIC 0 0 0

+ Data Distribution Information

General

Description of the data known by the party from whom the data may be obtained, liability of party distributing data, and technical capabilities required to use the data.

Resource description: Connecticut USGS 7.5 Minute Quadrangle Index

Technical prerequisites: Geographic information sytem (GIS), computer-aided drawing or other mapping software is necessary to display, view and access the information.

Distribution Point of Contact

Contact information for the individual or organization distributing the data.

Organization: State of Connecticut, Department of Enviromental Protection

Phone: 860-424-3540

Fax: 860-424-4058

Email: dep.gisdata@ct.gov

Hours of service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time

Address type: mailing and physical address

Address: 79 Elm Street

City: Hartford

State or Province: Connecticut

Postal code: 06106-5127

Country: USA

Standard Order Process

Common ways in which data may be obtained.

Digital form:

Format name: Shapefile, Feature Class

Format version number: ArcGIS

File decompression technique: Zip file

Digital transfer option:

Online option:

Computer information:

Network address:

Network resource name: http://www.ct.gov/deep

Fees: An online copy of the data may be accessed without charge.

Custom Order Process

Description of custom distribution services available.

Custom order process: 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.

+ Metadata Reference

Metadata Date

Dates associated with creating, updating and reviewing the metadata.

Last updated: 20111208

Language of metadata: en

Metadata Point of Contact

Contact information for the individual or organization responsible for the metadata information.

Organization: State of Connecticut, Department of Environmental Protection

Person: Howie Sternberg

Phone: 860-424-3540

Fax: 860-424-4058

Email: dep.gisdata@ct.gov

Hours of service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time

Address type: mailing and physical address

Address: 79 Elm Street

City: Hartford

State or Province: Connecticut

Postal code: 06106-5127

Country: USA

Metadata Standards

Description of the metadata standard used to document the data and reference to any additional extended profiles to the standard used by the metadata producer.

Standard name: FGDC Content Standards for Digital Geospatial Metadata

Standard version: FGDC-STD-001-1998

Time convention: local time

Metadata profiles defining additonal information:

Profile: ESRI Metadata Profile

Online linkage: http://www.esri.com/metadata/esriprof80.html

FGDC Plus Metadata Stylesheet

Stylesheet: FGDC Plus Stylesheet

File name: FGDC Plus.xsl

Version: 2.2

Description: This metadata is displayed using the FGDC Plus Stylesheet, which is an XSL template that can be used with ArcGIS software to display metadata. It displays metadata elements defined in the Content Standard for Digital Geospatial Metadata (CSDGM) - aka FGDC Standard, the ESRI Profile of CSDGM, the Biological Data Profile of CSDGM, and the Shoreline Data Profile of CSDGM. CSDGM is the US Federal Metadata standard. The Federal Geographic Data Committee originally adopted the CSDGM in 1994 and revised it in 1998. According to Executive Order 12096 all Federal agencies are ordered to use this standard to document geospatial data created as of January, 1995. The standard is often referred to as the FGDC Metadata Standard and has been implemented beyond the federal level with State and local governments adopting the metadata standard as well. The Biological Data Profile broadens the application of the CSDGM so that it is more easily applied to biological data that are not explicitly geographic (laboratory results, field notes, specimen collections, research reports) but can be associated with a geographic location. Includes taxonomical vocabulary. The Shoreline Data Profile addresses variability in the definition and mapping of shorelines by providing a standardized set of terms and data elements required to support metadata for shoreline and coastal data sets. The FGDC Plus Stylesheet includes the Dublin Core Metadata Element Set. It supports W3C DOM compatible browsers such as IE7, IE6, Netscape 7, and Mozilla Firefox. It is in the public domain and may be freely used, modified, and redistributed. It is provided "AS-IS" without warranty or technical support.

Instructions: On the top of the page, click on the title of the dataset to toggle opening and closing of all metadata content sections or click section links listed horizontally below the title to open individual sections. Click on a section name (e.g. Description) to open and close section content. Within a section, click on a item name (Status, Key Words, etc.) to open and close individual content items. By default, the Citation information within the Description section is always open for display.

Download: FGDC Plus Stylesheet is available from the ArcScripts downloads at www.esri.com.