Metadata for Watershed Boundary Dataset for Montana Metadata for Watershed Boundary Dataset for Montana

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Identification Information:

Citation:

Originator:: U.S. Department of Agriculture, Natural Resources Conservation Service, National Geospatial Center of Excellence
Publication date: 12/20/2020
Title: Watershed Boundary Dataset for Montana
Online linkage: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/HydrologicUnits

Abstract:

This data set is a complete digital hydrologic unit boundary layer of the Regions (2-digit HUCs), Subregions (4-digit), Basins (6-digit), Subbasins (8-digit), Watersheds (10-digit), and Subwatersheds (12-digit) for Montana. This data set consists of geo-referenced digital data and associated attributes created in accordance with the "Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3" (04/01/2009). http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/water/watersheds/?cid=nrcs143_021630. The data is currently updated through the USGS National Hydrography Dataset (NHD) Program approximately annually. Data are available as a geodatabase with all HUC levels or as shapefiles subset by HUC level (8-digit,10-digit, 12-digit).

Purpose:

The hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. The smaller sized 6th level sub-watersheds (up to 250,000 acres) are useful for numerous application programs supported by a variety of local, State, and Federal Agencies. This data set is intended to be used as a tool for water-resource management and planning activities, particularly for site-specific and localized studies requiring a level of detail provided by large-scale map information. The dataset is seamless and, for the most part, a nationally consistant geospatial database.

Time period of content:

Calendar date: 02/08/2022
Currentness reference: Publication Date

Status:

Progress: In work
Maintenance and update frequency: Biannually

Access constraints: None

Use constraints:

The distributor shall not be held liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate uses described in this metadata document. It is strongly recommended that this data is directly acquired from the distributor and not indirectly through other sources which may have changed the data in some way. These data should not be used at scales greater than 1:24,000 for the purpose of identifying hydrographic watershed boundary feature locations in the U.S.A. The NRCS should be acknowledged as the data source in products derived from these data. The Watershed Boundary Dataset is public information and may be interpreted by all organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application of the data. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions they make. The Natural Resources Conservation Service will not perform any evaluations of these maps or purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than that at which they were originally delineated can result in misrepresentation of the data. If enlarged, the maps will not include the fine detail that would be appropriate for mapping at the small scale. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data from the source distributor.

The Montana State Library Geographic Information Services provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Point of contact:

Authoritative Data Team
U.S. Department of Agriculture, Natural Resources Conservation Service, National Geospatial Center of Excellence
501 W. Felix Street, Bldg. 23
Fort Worth, Texas 76115
Telephone: 817-509-3394
Fax: 817-509-3469

Point of contact:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov

Data set credit:

Funding and support for the Watershed Boundary Dataset (WBD) were provided by the Natural Resources Conservation Service, the Environmental Protection Agency, and the United States Geological Survey. Representatives from the U.S. Geological Survey and Environmental Protection Agency contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the Federal Standards for Delineation of Hydrologic Unit Boundaries.

Spatial Data Organization Information:

Point and vector object information:

SDTS object type: GT-polygon composed of chains

SDTS object count: 101

Entity and Attribute Information:

Entity type label: WBDHU8_MT

Entity type definition: identifies watershed boundaries (as polygons)

Attribute label: HUC8

Attribute definition: 8 digit identifier

Attribute label: AreaSqKm

Attribute label: AreaAcres

Attribute label: SourceData

Attribute label: Shape_Area

Attribute definition: Area of feature in internal units squared.
Attribute domain: Positive real numbers that are automatically generated.

Attribute label: Shape_Leng

Attribute label: Shape_STLe

Attribute label: Shape_STAr

Attribute label: SHAPE

Attribute definition: Feature geometry.
Attribute domain: Coordinates defining the features.
Attribute measurement frequency: As needed

Attribute label: FID

Attribute definition: Internal feature number.
Attribute domain:: Sequential unique whole numbers that are automatically generated.

Attribute label: GNIS_ID

Attribute label: SourceOrig

Attribute label: MetaSource

Attribute label: STATES

Attribute definition:: The "States" field includes the names of all state(s) that the subwatershed falls within. The 2-digit postal abbreviation in upper case and in alphabetical order was used, separated with a comma.
Attribute domain: Character String
Attribute measurement frequency: As needed

Attribute label: TNMID

Attribute label: SourceFeat

Attribute label: Name

Attribute label: LoadDate

Entity and attribute overview:

Each hydrologic unit polygon has associated attributes stored in tabular format. An attribute, also called a field or column, is defined by name, type, size, and valid values. For this layer, these attributes are the Hydrologic Unit Codes, Names, Acreage, States crossed, non-contributing area, Downstream unit code, Type, and Modification. ftp://ftp-fc.sc.egov.usda.gov/NCGC/products/watershed/hu-standards.pdf

Entity and attribute detail citation:

Federal Guidelines, Requirements, and Procedures for the National Watershed Boundary Dataset; Chapter 3 of Section A, Federal Standards, Book 11, Collection and Delineation of Spatial Data; Techniques and Methods 11-A3. The data is currently updated through the USGS National Hydrography Dataset (NHD) Program and replicated to NRCS twice per year.

Distribution Information:

Distributor:

Montana State Library
PO Box 201800
Helena, MT 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov

Resource description: Downloadable Data

Distribution liability: See access and use constraints information.

Standard order process:

Digital form:

Format name: file geodatabase in zipped file

Metadata Reference Information:

Metadata date: 02/08/2022

Metadata contact:

Authoritative Data Team
U.S. Department of Agriculture, Natural Resources Conservation Service, National Geospatial Center of Excellence
501 W. Felix Street, Bldg. 23
Fort Worth, Texas 76115
Telephone: 817-509-3394
Fax: 817-509-3469
E-Mail: kenneth.becker@ftw.usda.gov
Contact instructions: Prefer contact by e-mail.

Metadata use constraints:

The Montana State Library Geographic Information Services provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.