Metadata for Montana Surface Water Supply (SWSI) Drought Index Areas, 2000 and After Metadata for Montana Surface Water Supply (SWSI) Drought Index Areas, 2000 and After
Identification Information:
Citation:
Originator: Montana State Library
Publication date: 2000
Title:
Montana Surface Water Supply (SWSI) Drought Index Areas, 2000 and After
Publication place: Helena, Montana
Publisher: Montana State Library
Larger Work Citation:
Title: Montana Surface Water Supply (SWSI) Drought Index Areas
Online linkage: http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={75CD6471-6B7B-4C83-998C-82EEC1AE1CF7}

Abstract:
This layer shows areas of Montana for which staff of the Montana Office of the Natural Resources Conservation Service (NRCS) calculate a monthly Surface Water Supply Index (SWSI) value. The SWSI is determined for areas that rely on snow melt as the primary source of surface water. The regions were derived from 4th-code subbasin hydrologic unit boundary (HUC) data, modified based on input from NRCS personnel. Some SWSI areas are arbitrary-width, uniform buffers along streams, some are one or more HUCs, and some are truncated HUCs.

This version of the layer was used after the year 1999 to make the maps shown on the SWSI web pages of the State Library web site. The old web site maps based on the pre-2000 areas were replaced with maps of these new areas.

Time period of content:
Calendar date: 2000
Currentness reference: Publication Date
Access constraints: None
Use constraints:
The Montana State Library 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:
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


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Spatial Data Organization Information:
Point and vector object information:
SDTS object type: GT-polygon composed of chains
SDTS object count: 52
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Spatial Reference Information:
Horizontal coordinate system definition:
Grid coordinate system name: State Plane Coordinate System 1983
SPCS zone identifier: 2500
Lambert conformal conic:
Standard parallel: 45.000000
Standard parallel: 49.000000
Longitude of central meridian: -109.500000
Latitude of projection origin: 44.250000
False easting: 600000.000000
False northing: 0.000000
Planar distance units: meters
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
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Entity and Attribute Information:
Entity type label: SWSI_2000
Entity type definition: Polygon feature class

Attribute label: FID
Attribute definition: Shapefile sequence number

Attribute label: Shape
Attribute definition: feature geometry

Attribute label: SWSI4_
Attribute definition: Esri coverage feature sequence number

Attribute label: SWSI4_ID
Attribute definition: Esri coverage feature ID number

Attribute label: MAJOR
Attribute definition: Major basin number (arbitrary)

Attribute label: NAME
Attribute definition: SWSI area name

Attribute label: NUM
Attribute definition: Basin number used to link SWSI data tables to the map

Attribute label: STREAM
Attribute definition: Alternate SWSI area name, usually a shorter version

Attribute label: SwsiID
Attribute definition: Basin number used to link SWSI data tables to the map

Attribute label: Shape_Leng
Attribute definition: Length of the polygon perimeter in meters

Attribute label: Shape_Area
Attribute definition: Area of the polygon in square meters

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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: Offline Data


Distribution liability:
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.
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Metadata Reference Information:
Metadata date: 11/26/2014
Metadata 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


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