Shellfish (Hardclam, softclam, oysters)

+ Resource Description

Citation

Information used to reference the data.

Title: Shellfish (Hardclam, softclam, oysters)

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

Publication date: 1997

Data type: vector digital data

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

Description

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

Abstract:

Shellfish polygons were digitized from hand drawn polygons representing hardclam, softclam, and oyster beds produced by the Department of Agriculture from their records in 1990 (approximately).

The data is general in its nature and should be used only as a guide.

Purpose:

The Shellfish layer is 1:24,000-scale data. It depicts the approximate location of shellfish beds along the Connecticut coast and is suitable as a general means of identifying a resource area.  This layer should not be construed to depict the actual, absolute locations of any shellfishing resources.  Use this layer with other 1:24,000-scale map data such as the Coastal Boundary, Town Boundaries, Roads and Trails, Airports, Railroads and other base map data derived from the USGS 7.5 minute topographic quadrangle maps and compiled at a 1:24000 scale.

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: 860-424-3540

Fax: 860-424-3540

Email: 860-424-3540

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

Address type: mailing and physical address

Address:

79 Elm St.

City: Hartford

State or Province: CT

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.SHELLFISH

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: 1990

Currentness reference:

ground condition

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: environment

Keyword thesaurus: ISO 19115 Topic Category

Place:

Keywords: Long Island Sound

Keyword thesaurus: none

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:

There are no legal prerequisites for using the data, however this layer should not be construed to depict the actual, absolute locations of any shellfishing resources.  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.

+ 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	748887.750000 (survey feet)
Right	1246914.500000 (survey feet)
Top	690921.500000 (survey feet)
Bottom	550715.813000 (survey feet)

In Unprojected coordinates (geographic)

GCS North American 1983

Boundary	Coordinate
West	-73.664651 (longitude)
East	-71.850638 (longitude)
North	41.357323 (latitude)
South	40.968899 (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.

Direct spatial reference method: Vector

Attributes of depgis.DEP.SHELLFISH

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

Name: depgis.DEP.SHELLFISH

Type of object: Feature Class

Geometry type: Polygon

Number of records: 424

Attributes

ACREAGE

Definition:

Calculated area of polygon feature in acres. Note, ACREAGE values are not automatically updated after modifying feature geometry (shape). Values must be recalculated after features are edited, simplified, generalized, clipped, dissolved, etc.

Alias: ACREAGE Type: Double Width: 8 Precision: 15 Scale: 3

Attribute definition source:

State of Connecticut, Department of Environmental Protection

Shape

Definition:

Feature geometry.

Alias: SHELLFISH Type: String Width: 30 Precision: 0 Scale: 0

Attribute values: Coordinates defining the features.

Attribute definition source:

ESRI

SHELLFISH

Definition:

Text field indicating the presence of one or more types of shellfish data resulting from the aggregation of hardclam, softclam, and oyster data.

Alias: OYSTER Type: String Width: 5 Precision: 0 Scale: 0

Attribute definition source:

State of Connecticut, Department of Environmental Protection

OYSTER

Definition:

True/False indicator on whether the oyster layer indluded values for the gien area.

Alias: HARDCLAM Type: String Width: 5 Precision: 0 Scale: 0

Attribute definition source:

State of Connecticut, Department of Environmental Protection

HARDCLAM

Definition:

True/False indicator on whether the hardclam layer included values for the given area.

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

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

Attribute definition source:

State of Connecticut, Department of Environmental Protection

OBJECTID

Definition:

Internal feature number.

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

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

Attribute definition source:

ESRI

SHAPE

Definition:

Feature geometry.

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

Attribute values: Coordinates defining the features.

Attribute definition source:

ESRI

SHAPE.area

Alias: SOFTCLAM Type: String Width: 5 Precision: 0 Scale: 0

SOFTCLAM

Definition:

True/False indicator on whether the sofclam layer included values for the given area.

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

Attribute definition source:

State of Connecticut, Department of Environmental Protection

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.SHELLFISH

ESRI feature type: Simple

Geometry type: Polygon

Topology: FALSE

Feature count: 424

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.SHELLFISH

Type: G-polygon

Count: 424

+ 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:

Establishment of logical consistency was performed by the State of Connecticut, Department of Environmental Protection using ESRI ArcGIS software to manually create and control feature topology in SHAPEFILE format. No automated procedures or tests were performed to guarantee desired topology other than visual inspection.

Completeness report:

The completeness of the data reflects the feature content of the data sources, which include the Department of Agriculture source maps.. The layer is complete in the sense that it accurately reflects the contents of the source information available at the time the State of Connecticut, Department of Environmental Protection created the layer. However, compared to current conditions, the layer may be incomplete. This data is not updated.

Attribute Accuracy

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

Attribute accuracy report:

The layer retains the feature types and information identified by the State of Connecticut, Department of Environmental Protection and obtained from the Department of Agriculture hardclam, softclam, and oyster maps. All attributes have valid values. Values are within defined domains.

Positional Accuracy

Accuracy of the positional aspects of the data.

Horizontal accuracy report:

The horizontal positional accuracy of this data is unknown. The polygon features represent approximate positions for arge area objects or observations.

+ Data Source and Process Information

Data Sources

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

Data source information

Source 1 - CT Dept of Agriculture Shellfish maps

Source 2: Hardclam, softclam, and oyster GIS shapefiles

Source 3 - Shellfish Layer

Process Steps

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

Process step information

Process Step 1

Process description:

Hard clam, soft clam, and oyster bed polygons were digitized from hand drawn polygons produced by the Department of Agriculture from their records in 1990 (approximately).

Process date: 1990

Data Source used

Source 1 - CT Dept of Agriculture Shellfish maps

Data Source produced

Source 2: Hardclam, softclam, and oyster GIS shapefiles

Process Step 2

Process description:

The individual hardclam, softclam, and  oyster GIS shapefiles were aggregated into one shellfish layer.  Attributes were modified to describe whether an area was comprised of one or several types of shellfish classes.

Data Source used

Source 2: Hardclam, softclam, and oyster GIS shapefiles

Data Source produced

Source 3 - Shellfish Layer

ESRI geoprocessing history

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

ESRI geoprocessing command information

1 Process

Date: 20070718 Time: 181308

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

Command issued: CopyFeatures R:\GeoData\Coast\shapes\Shellfish.shp "Database Connections\10.18.8.94.depgis@DEP_Direct.sde\depgis.DEP.Shellfish" DEPVECTORSTATIC 10000 0 0

2 CopyFeatures_73

Date: 20081215 Time: 162329

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.SHELLFISH" "Database Connections\062174-svr.depgis@DEP.sde\depgis.DEP.SHELLFISH" 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:

Downloadable DEP Shellfish Data.

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: 860-424-3034

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 St.

City: Hartford

State or Province: CT

Postal code: 06106-5127

Country: USA

Standard Order Process

Common ways in which data may be obtained.

Digital form:

Size of the data: 0.854

Transfer size: 0.854

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:

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

+ 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: Kevin O'Brien

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 St.

City: Hartford

State or Province: CT

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.