Prerelease Connecticut Watershed Boundary Dataset

+ Resource Description

Citation

Information used to reference the data.

Title: Prerelease Connecticut Watershed Boundary Dataset

Originators: U.S. Department of Agriculture, Natural Resources Conservation Service

Publisher: U.S. Department of Agriculture, Natural Resources Conservation Service

Publication date: Unknown

Data type: vector digital data

Data location: http://www.lighthouse.nrcs.usda.gov/gateway/gatewayhome.html

Description

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

Abstract:

This is a prerelease (early) version of the Watershed Boundary Dataset (WBD) for Connecticut, the digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The original data set was developed by delineating the boundary lines on base USGS 1:24000 scale topographic quadrangle, and digitizing the delineated lines. Digital Raster Graphics (DRG) images were used for edits to the data layer. 

This data set consists of geo-referenced digital map data and attribute data. The spatial data are in a statewide coverage format and include complete coverage of the entire state of Connecticut, and small parts of surrounding states. The hydrologic unit ID code attached to each delineated polygon is linked to the attribute data.

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

Purpose:

This is a prerelease (early) version of the Watershed Boundary Dataset (WBD) for Connecticut. It includes attributes not included in the final dataset published by NRCS. These additional attributes document the correlation between Subregional drainage basin boundaries delineated by the State of Connecticut, Department of Environmental Protection and individual Watershed and Subwatershed unit boundaries that make up the Watershed Boundary Dataset. For consistency with boundaries previously delineated by the State of Connecticut, the NRCS based many Watershed and Subwatershed unit boundaries on previously delineated Subregional drainage basin boundaries. During the 1980's the Connecticut Department of Environmental Protection delineated natural drainage area boundaries for Connecticut based on the hydrography and contour line information published on the 1:24,000-scale USGS topographic quadrangle maps that covered the State of Connecticut. These boundaries included Major, Regional, Subregional, Local and basin boundaries for the entire state.

The Watershed and Subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. These smaller sized hydrologic units (up to 250,000 acres) are useful in many programs supported by the Natural Resources Conservation Service and others.

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

Supplemental information:

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

Language of dataset: en

Data Type

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

File or table name: depgis.DEP.WATERSHED_BOUNDARY_PRERELEASE

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: unknown

Currentness reference:

publication date

Status

The state of and maintenance information for the data.

Data status: Complete

Update frequency: Unknown

Key Words

Words or phrases that summarize certain aspects of the data.

Theme:

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.

Data Access Constraints

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

Access constraints:

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

Use constraints:

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

+ Graphic Example

Browse Graphic

Graphic illustration of the data.

Browse graphic 1

Open - Full view of Prelease Connecticut Watershed Boundary Dataset

+ 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	727908.999000 (survey feet)
Right	1302633.067000 (survey feet)
Top	1010902.405000 (survey feet)
Bottom	539975.796000 (survey feet)

In Unprojected coordinates (geographic)

GCS North American 1983

Boundary	Coordinate
West	-73.754607 (longitude)
East	-71.632639 (longitude)
North	42.235424 (latitude)
South	40.937784 (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

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

Attributes of Prerelease Connecticut Watershed Boundary Dataset

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

Name: depgis.DEP.WATERSHED_BOUNDARY_PRERELEASE

Type of object: Feature Class

Geometry type: Polygon

Number of records: 194

Description:

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

SHAPE

Definition:

Feature geometry.

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

Attribute values: Coordinates defining the features.

Attribute definition source:

ESRI

PERIMETER

Alias: PERIMETER Type: Double Width: 8 Precision: 16 Scale: 5

CT12STPL

Alias: CT12STPL Type: Integer Width: 4 Precision: 10 Scale: 0

CT12STPL_I

Alias: CT12STPL_I Type: Integer Width: 4 Precision: 10 Scale: 0

HUC_8

Alias: HUC_8 Type: String Width: 8 Precision: 0 Scale: 0

HUC_10

Alias: HUC_10 Type: String Width: 10 Precision: 0 Scale: 0

HUC_12

Alias: HUC_12 Type: String Width: 12 Precision: 0 Scale: 0

ACRES

Alias: ACRES Type: Double Width: 8 Precision: 16 Scale: 5

STATES

Alias: STATES Type: String Width: 11 Precision: 0 Scale: 0

NCONTRB_A

Alias: NCONTRB_A Type: Double Width: 8 Precision: 16 Scale: 5

HU_10_DS

Alias: HU_10_DS Type: String Width: 10 Precision: 0 Scale: 0

HU_10_NAME

Alias: HU_10_NAME Type: String Width: 80 Precision: 0 Scale: 0

HU_10_MOD

Alias: HU_10_MOD Type: String Width: 20 Precision: 0 Scale: 0

HU_10_TYPE

Alias: HU_10_TYPE Type: String Width: 1 Precision: 0 Scale: 0

HU_12_DS

Alias: HU_12_DS Type: String Width: 12 Precision: 0 Scale: 0

HU_12_NAME

Alias: HU_12_NAME Type: String Width: 80 Precision: 0 Scale: 0

HU_12_MOD

Alias: HU_12_MOD Type: String Width: 20 Precision: 0 Scale: 0

HU_12_TYPE

Alias: HU_12_TYPE Type: String Width: 1 Precision: 0 Scale: 0

OUTLET_TOW

Alias: OUTLET_TOW Type: String Width: 25 Precision: 0 Scale: 0

REGION

Alias: REGION Type: String Width: 80 Precision: 0 Scale: 0

SUBREGION

Alias: SUBREGION Type: String Width: 80 Precision: 0 Scale: 0

BASIN

Alias: BASIN Type: String Width: 80 Precision: 0 Scale: 0

SUBBASIN

Alias: SUBBASIN Type: String Width: 80 Precision: 0 Scale: 0

CT_SREGBSN

Alias: CT_SRBASIN Type: String Width: 90 Precision: 0 Scale: 0

CT_REGBSN

Alias: CT_REGBASI Type: String Width: 20 Precision: 0 Scale: 0

Alias: CK Type: SmallInteger Width: 2 Precision: 5 Scale: 0

HUC_2

Alias: HUC_2 Type: String Width: 2 Precision: 0 Scale: 0

HUC_4

Alias: HUC_4 Type: String Width: 4 Precision: 0 Scale: 0

HUC_6

Alias: HUC_6 Type: String Width: 6 Precision: 0 Scale: 0

SB_CONDITI

Alias: SB_CONDITI Type: String Width: 25 Precision: 0 Scale: 0

CODE_10

Alias: CODE_10 Type: String Width: 2 Precision: 0 Scale: 0

CODE_12

Alias: CODE_12 Type: String Width: 2 Precision: 0 Scale: 0

AREA_

Alias: AREA_ Type: Double Width: 8 Precision: 16 Scale: 5

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.WATERSHED_BOUNDARY_PRERELEASE

ESRI feature type: Simple

Geometry type: Polygon

Topology: FALSE

Feature count: 194

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.WATERSHED_BOUNDARY_PRERELEASE

Type: G-polygon

Count: 194

+ 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:

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

Completeness report:

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

Attribute Accuracy

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

Attribute accuracy report:

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

Positional Accuracy

Accuracy of the positional aspects of the data.

Horizontal accuracy report:

See metadata for the final and official copy of NRCS Watershed Boundary Dataset for Connecticut.

+ Data Source and Process Information

ESRI geoprocessing history

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

ESRI geoprocessing command information

1 Process

Date: 20061205 Time: 091912

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

Command issued: CopyFeatures F:\GeoData\Basin\geodatabase\Basin.mdb\Watershed_Boundary_Prerelease "Database Connections\depdbs11@dep.sde\depgis.DEP.Watershed_Boundary_Prerelease" DEPVECTORSTATIC 10000 0 0

2 CopyFeatures_99

Date: 20081215 Time: 163052

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

Prerelease Connecticut Watershed Boundary Dataset

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: Esri Feature Class

Format version number: ArcGIS 9

Size of the data: 5.649

Transfer size: 5.649

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: 20111209

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@po.state.ct.us

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.