Coastal Boundary
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Coastal Boundary
SDE Feature Class - depgis.DEP.COASTAL_BOUNDARY
FGDC, ESRI Metadata
DescriptionGraphicSpatialData StructureData QualityData SourceData DistributionMetadata
+ Resource Description
Citation
Information used to reference the data.
Title: Coastal Boundary
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: 1995
Edition: 1999
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
Except for periodic corrections, this layer includes information that is relatively static and does not change over time.  The 1999 Edition is in the Connecituct State Plane Coordinate System of 1983 (NAD83).  
Description
A characterization of the data, including its intended use and limitations.
Abstract:
The Coastal Boundary layer is a 1:24,000-scale, polygon feature-based layer of the legal mylar-based maps adopted by the Commissioner of the Department of Environmental Protection (DEP) (i.e., maps were adopted on a town by town basis) showing the extent of lands and coastal waters as defined by Connecticut General Statute (C.G.S.) 22a-93(5)) within Connecticut's coastal area (defined by C.G.S. 22a-94(c)). The coastal boundary is a hybrid of the original 1:24,000 version maps prepared by DEP consistent with C.G.S. 22a-94(d) (Coastal Area) and the revised boundary mapping undertaken by twenty-two coastal towns prepared pursuant to C.G.S. 22a-94(f). This layer therefore does not replace the legal maps and may not be used for legal determinations.  

The Coastal Boundary layer includes a single polygon feature that represents the coastal boundary.  No other features are included in this layer.  Data is compiled at 1:24,000 scale.  Attribute information is comprised of an Av_Legend attribute and a CoastB_Flg attribute to denote the coastal boundary.  Other attributes include automatically calculated Shape_Length and Shape_Area fields.  This data is not updated.

Any regulated activity conducted within the coastal boundary by a municipal agency (i.e., plans of development, zoning regulations, municipal coastal programs and coastal site plan review (i.e., site plans submitted to zoning commission, subdivision or resubdivision plans submitted to planning commission, application for special permit or exception to the zoning or planning commissions or zoning board of appeals, variance submitted to zoning board of appeals and a referral of a municipal project)) must be conducted in a manner consistent with the requirements of the Connecticut Coastal Management Act (CMA; C.G.S. 22a-90 to 22a-113).  As the Coastal Boundary is a hybrid of the Coastal Area, all state and federal agency activities must be consistent with the requirements of the CMA.

As defined in C.G.S. 22a-94(b) the coastal boundary is a "continuous line delineated on the landward side by the interior contour elevation of the one hundred year frequency coastal flood zone, as defined and determined by the National Flood Insurance Act, as amended (USC 42 Section 4101, P.L. 93-234), or a one thousand foot linear setback measured from the mean high water mark in coastal waters, or a one thousand foot linear setback measured from the inland boundary of tidal wetlands mapped under section 22a-20, whichever is farthest inland; and shall be delineated on the seaward side by the seaward extent of the jurisdiction of the state."

The original boundary maps were created in 1979 on stable mylar overlay using the 1:24,000-scale US Geological Survey topographic quadrangle maps (mylar film format). The source for tidal wetland maps were the legal 1:24,000 maps (mylar format) adopted by the Commissioner of DEP and transformed to 1:24,000 mylar-scale maps by the Office of Policy and Management (OPM) using an accurate pantograph. OPM similarly converted FEMA's flood insurance maps (various scales) to a 1:24,000 mylar overlay. The inland extent of coastal waters was plotted on 1:24,000 USGS topographic maps following the procedures and sources described in The Boundary Between Saltwater and Freshwater in Connecticut, December 1978 prepared by the State of Connecticut, Department of Environmental Protection, Coastal Area Management Program.

The following twenty-two towns have adopted municipal coastal boundaries: Chester, Clinton, Darien, Deep River, East Haven, Essex, Fairfield, Greenwich, Groton, Guilford, Hamden, Ledyard, Madison, Milford, New Haven, New London, North Haven, Norwalk, Old Lyme, Old Saybrook, Stamford and Waterford. The coastal boundary maps for these towns may be at different scales than the original DEP draft maps and may contain minor adjustments to the boundary as permitted in C.G.S. 22a-94(f).
Purpose:
The Coastal Boundary layer is 1:24,000-scale data. It shows the extent of lands and coastal waters as defined by C.G.S. 22a-93(5) within Connecticut's coastal area (defined by C.G.S. 22a-94(c)).  Use this layer to show the Coastal Boundary on maps with other 1:24,000-scale data such as Coastal Area, Town Boundaries, Roads and Trails, Airports, Railroads and other base map data derived from the USGS 7.5 Minute Quadrangle Maps and compiled at a 1:24,000 scale.  Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.)
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
Phone: 860-424-3034
Fax: 860-424-4054
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.COASTAL_BOUNDARY
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: 1995
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: Coastal Boundary, Connecticut Coastal Management Act, Coastal Area, Long Island Sound, Coastal Regulations
Keyword thesaurus: None
Theme:
Keywords: boundaries
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.
Place:
Keywords: Long Island Sound
Keyword thesaurus: None
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:
None. No restrictions or legal prerequisites for using the data.  Note:  the data is not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.)  Once acquired, any modification made to the data must be noted in the metadata. When printing this information 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.
+ Graphic Example
Browse Graphic
Graphic illustration of the data.
Browse graphic 1
Open - Full view of Coastal Boundary
Graphic Image

Browse graphic 2
Open - Detail view of Coastal Boundary
Graphic Image
+ 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
BoundaryCoordinate
Left748756.063000 (survey feet)
Right1252976.750000 (survey feet)
Top758921.125000 (survey feet)
Bottom544018.813000 (survey feet)
In Unprojected coordinates (geographic)
GCS North American 1983
BoundaryCoordinate
West-73.667761 (longitude)
East-71.825910 (longitude)
North41.543944 (latitude)
South40.950466 (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:
Information encoded about the Coastal Boundary is limited.  Use the Av_Legend attribute to denote the coastal boundary.  The COASTB_FLG attribute also designates the coastal boundary and is represented by a "T" (True) value.  The remaining attributes are software generated and include unique identification number (ObjectID), area (Shape_Area), and length (Shape_Length) attributes.
Direct spatial reference method: Vector
Indirect spatial reference method: State of Connecticut, United States of America
Attributes of Coastal Boundary
Detailed descriptions of entity type, attributes, and attribute values for the data.
Name: depgis.DEP.COASTAL_BOUNDARY
Type of object: Feature Class
Geometry type: Polygon
Number of records: 1
Description:
Coastal Boundary represented as a single polygon
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
ACREAGE
Definition:
Area of feature in internal units (acres).  Values must be recalculated after feature is edited.
Alias: ACREAGE Type: Double Width: 8 Precision: 16 Scale: 5
Attribute values: Positive real numbers that are automatically generated.
Attribute definition source:
ESRI
AREA_SQMI
Definition:
Area of feature in internal units (square miles).
Alias: AREA_SQMI Type: Double Width: 8 Precision: 16 Scale: 5
Attribute values: Positive real numbers that are automatically generated.
Attribute definition source:
ESRI
SHAPE
Definition:
Feature geometry.
Alias: Shape Type: Geometry Width: 4 Precision: 0 Scale: 0
Attribute values: Coordinates defining the features.
Attribute definition source:
ESRI
LENGTH_MI
Definition:
Length of perimeter of feature in miles.  Values must be recalculated after feature is edited.
Alias: LENGTH_MI Type: Double Width: 8 Precision: 16 Scale: 5
Attribute values: Positive real numbers that are automatically generated.
Attribute definition source:
ESRI
STATUS
Alias: STATUS Type: String Width: 20 Precision: 0 Scale: 0
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.COASTAL_BOUNDARY
ESRI feature type: Simple
Geometry type: Polygon
Topology: FALSE
Feature count: 1
Spatial index: TRUE
Linear referencing: FALSE
tic
ESRI feature type: Simple
Geometry type: Tic
Topology: FALSE
Feature count: 216
Spatial index: FALSE
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.COASTAL_BOUNDARY
Type: G-polygon
Count: 1
tic
Type: Point
Count: 216
+ 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:
This layer consists of a single polygon.  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. Logical consistency testing methods are unknown.
Completeness report:
The Coastal Boundary layer is complete in the sense that it accurately reflects the coastal boundary as defined in Connecticut General Statutes 22a-93(5).  This data is not updated.
Attribute Accuracy
Accuracy of the identification of data entities, features and assignment of attribute values.
Attribute accuracy report:
There is only one polygon feature in the Coastal Boundary layer.  The Av_Legend attribute value is "In coastal boundary", CoastB_Flg holds the value of "T" (True for coastal boundary), and the Shape_Area and Shape_Length attribute values are automatically calculated.  The attributes have valid values.
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 - Coastal Boundary Mylars
Title: Coastal Boundary Mylars
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication date: 1995
Edition: 1995
Map scale denominator: 24,000
Media: stable-base material
Source contribution:
Delineates the coastal boundary as defined by C.G.S. 22a-94(c).  The stable-base material used were mylar copies of the USGS 7.5 minute quadrangle maps upon which the coastal boundary was hand drawn.  Incorporated onto these maps are municipal coastal boundaries for 22 towns that chose to revise the original state coastal boundary.  When the scale of the individual municipal maps differed from 1:24000, they were converted to a 24,000 scale and hand drawn onto the above referenced mylar copies.
Beginning date: 1979
Ending date: 1985
Currentness reference:
publication date
Source 2 - Coastal Boundary Layer, Shapefile
Title: Coastal Boundary Layer
Originators: State of Connecticut, Department of Environmental Protection
Publication date: 1995
Map scale denominator: 24,000
Media: disc
Source contribution:
Delineates the Coastal Boundary as defined in C.G.S. 22a-93(5).  This data source refers to all features combined in one statewide layer. Since initial publication in 1995, a subsequent edition of the layer was generated by the State of Connecticut in order to convert from the Connecticut State Plane Coordinate System of 1927 (NAD27) to the Connecticut State Plane Coordinate System of 1983 (NAD83).  Changes made to the entire layer are reflected in metadata process steps where this particular data source is cited as both the Source Used and the Source Produced.
Date: 1995
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:
Feature digitizing and attribution (digitizing tablet method) - Using ESRI ArcInfo software, features were digitized by registering the source map to the digitizing tablet and using the crosshairs of the digitizer's mouse to manually draft coastal boundary lines on the map. The corners of the USGS 7.5 minute topographic quadrangle maps are used as registration points and are depicted on the source map. The source map was registered to the digitizing tablet by digitizing (entering) the locations of four quadrangle corner registration points shown on the map.  Feature corrections and details regarding quality assurance and control are unknown for this layer.
Organization: State of Connecticut, Department of Environmental Protection
Person: Unknown
Process date: Early 1990's
Process software and version: ArcInfo
Data Source used
Source 1 - Coastal Boundary Mylars
Title: Coastal Boundary Mylars
Originators: State of Connecticut, Department of Environmental Protection
Publisher: State of Connecticut, Department of Environmental Protection
Publication date: 1995
Edition: 1995
Map scale denominator: 24,000
Media: stable-base material
Source contribution:
Delineates the coastal boundary as defined by C.G.S. 22a-94(c).  The stable-base material used were mylar copies of the USGS 7.5 minute quadrangle maps upon which the coastal boundary was hand drawn.  Incorporated onto these maps are municipal coastal boundaries for 22 towns that chose to revise the original state coastal boundary.  When the scale of the individual municipal maps differed from 1:24000, they were converted to a 24,000 scale and hand drawn onto the above referenced mylar copies.
Beginning date: 1979
Ending date: 1985
Currentness reference:
publication date
Data Source produced
Source 2 - Coastal Boundary Layer
Process Step 2
Process description:
Datum conversion - In 1999, using ESRI ArcInfo software, the Coastal Boundary layer was converted from the Connecticut State Plane Coordinate System of 1927 (NAD27) to the Connecticut State Plane Coordinate System of 1983 (NAD83). The NADCON (North American Datum CONversion) data transformation was used.  The Coastal Boundary layer was subsequently converted from ESRI Coverage format to ESRI Shapefile format.  
Organization: State of Connecticut, Department of Environmental Protection
Process date: 1999
Process software and version: ArcInfo
Data Source used
Source 2 - Coastal Boundary Layer
Data Source produced
Source 2 - Coastal Boundary Layer
ESRI geoprocessing history
Description of ESRI geoprocessing commands, settings, and tolerances applied to the data.
ESRI geoprocessing command information
1 Process
Date: 20061205 Time: 102742
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued: CopyFeatures F:\GeoData\Coast\geodatabase\coastal.mdb\Coastal_Boundary "Database Connections\depdbs11@dep.sde\depgis.DEP.Coastal_Boundary" DEPVECTORSTATIC 10000 0 0
2 CopyFeatures_24
Date: 20081215 Time: 154826
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.COASTAL_BOUNDARY" "Database Connections\062174-svr.depgis@DEP.sde\depgis.DEP.COASTAL_BOUNDARY" 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:
Coastal Boundary
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: 20120119
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: Jacqueline Mickiewicz, Rosemary Malley, Kevin O'Brien
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
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.