Data Quality Information
Spatial Data Organization Information
Spatial Reference Information
Entity and Attribute Information
Distribution Information
Metadata Reference Information
Full FGDC-compliant Metadata
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Citation
Originator: United States Forest Service
Publication_Date: 10/01/1997
Title: Ecological Unit Subsections, USFS Northern Region
Online_Linkage: http://nris.state.mt.us/nsdi/nris/e00/ot118.zip
Online_Linkage: http://nris.state.mt.us/nsdi/nris/shape/ot118.zip
Description
Abstract:
Subsections are regions with similar surficial geology,
lithology, geomorphic process, soil groups, subregional
climate, and potential natural communities.
Purpose:
Strategic multiforest, multiagency, or statewide planning.
Time_Period_of_Content
Beginning_Date: 01/01/1990
Ending_Date: 11/01/1996
Access_Constraints:
None
Use_Constraints:
Not for use at scales greater than 1:500000.
Native_Data_Set_Environment:
Arc/Info version 7.2.1 - SunOS version 5.7 and Windows NT
Pathname = l:\gis9\region1\pete\subsections
Attribute_Accuracy_Report:
Interpretations at this level are based on many assumptions,
generalizations, and averages.
Completeness_Report:
Data set is complete
Horizontal_Positional_Accuracy_Report:
Approximate horizontal accuracy is 254 meters, assuming
source data meets National Map Accuracy Standards.
Vertical_Positional_Accuracy_Report:
NONE
Lineage
Source_Information
Originator: A. W. Kuchler
Publication_Date: 01/01/1964
Title: Potential Natural Vegetation of the conterminous U.S.
Publication_Information
Publication_Place: New York
Publisher: American Geographical Society
Source_Scale_Denominator: 3168000
Type_of_Source_Media: paper
Source_Time_Period_of_Content
Calendar_Date: 01/01/1964
Source_Citation_Abbreviation: KUCH
Source_Information
Originator: U.S. Geological Survey
Publication_Date: 01/01/1955
Title: Geologic Maps of Idaho, Montana, Wyoming, North Dakota
Publication_Information
Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey
Other_Citation_Details:
Idaho: 1978, Montana: 1955, Wyoming: 1985, N Dakota: 1995
Source_Scale_Denominator: 500000
Type_of_Source_Media: paper
Source_Time_Period_of_Content
Beginning_Date: 01/01/1955
Ending_Date: 01/01/1995
Source_Citation_Abbreviation: GEOL
Source_Contribution:
The data was drafted on mylar overlays on these maps, based
on the information on these and other maps.
Process_Step
Process_Description:
Ecological units were drafted on 1:500,000 scale Geologic
maps by soil scientists of the Northern Region forests,
based on their knowledge and soil, climate, geologic, and
vegetation maps available to them.
Source_Used_Citation_Abbreviation: KUCH
Source_Used_Citation_Abbreviation: GEOL
Process_Date: 11/01/1996
Source_Produced_Citation_Abbreviation: FIN
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information
Number of Arcs: 359
Number of Polygons: 117
Number of Polygon Labels: 116
Horizontal_Coordinate_System_Definition
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
SPCS_Zone_Identifier: 2500
Map_Projection_Name: Lambert Conformal Conic
Standard_Parallel: 45
Standard_Parallel: 49
Longitude_of_Central_Meridian: -109.5
Latitude_of_Projection_Origin: 44.25
False_Easting: 600000
False_Northing: 0
Planar_Distance_Units: meters
Geodetic_Model
Horizontal_Datum_Name: North American Datum of 1983
Altitude_Encoding_Method: Implicit coordinate
Entity_Type_Definition: Polygon Attribute Table
Attribute_Label: SUBSECTION
Attribute_Definition: Subsection
This is the subsection identifier
Enumerated_Domain_Value Enumerated_Domain_Value_Definition
----------------------- ----------------------------------
331Aa Camas/Weippe Basalt Plateaus
331Ab Palouse Hills
331Ac Clearwater Canyon Breaks
331Da Rocky Mountain Front Foothills
331Db Montana Isolated Mountain Ranges
331Dc Belt Mountain Foothills
331De Little Belt Foothills
331Df Missouri River Breaks
331Dh Montana Glaciated Plains
331Ea Missouri Coteau
331Fb Shale Scablands
331Fc Pierre Shale Plains
331Fd Missouri Plateau
331Fe Missouri Breaks
331Fg Little Missouri Badlands
331Ga Montana High Plains and Foothills
331Gb Montana Shale Plains
331Gc Powder River Basin/Breaks/Scoria Hills
331Gd Wolf Mountains
331Ge Montana Sedimentary Plains
332Aa Glaciated Drift Plains
332Ab Souris Basin
332Ac Glaciated Outwash Plains
332Ad Souris Sand Deltas
332Ae Turtle Mountains
M331Aa Absaroka/Gallatin Mountains
M331Af Yellowstone Volcanic Plateau
M331Ag Northern Absaroka Volcanic Mountains
M331Ah Beartooth Mountains
M331Ai Absaroka Sedimentary Mountains
M331Ak West Yellowstone Valley
M331Al Upper Yellowstone Valley
M331Am Gallatin Foothills/Spanish Peaks
M331Ap Madison Mountains
M331Ar Beartooth Front
M331Ba Bighorn Sedimentary Mountains
M332Aa Lochsa/Salmon Breaklands
M332Ab Central Idaho Glaciated Mountains
M332Ac Central Idaho Mountains and Basins
M332Ba Bitterroot Glaciated Canyons
M332Bb Bitterroot/Frenchtown Valleys
M332Bc South Anaconda/Bitterroot Mountains
M332Bd Anaconda/Flint Creek Mountains
M332Be Flint Creek/Upper Willow Creek Basins
M332Bg Garnet/Sapphire Mountains
M332Bk Rattlesnake/Blackfoot/South Swan Mountains
M332Bp Avon/Nevada Valleys
M332Ca North Rocky Mountain Front
M332Cb Middle Rocky Mountain Front
M332Cc South Rocky Mountain Front
M332Da Snowy Foothills
M332Db Little Belt/Snowy/Judith/Mountains
M332Dc Crazy Mountains
M332De Continental Divide Foothills
M332Dg Big Belt Foothills
M332Dh Big Belt Mountains
M332Dj Boulder/Elkhorn Mountains
M332Dk Central Montana Broad Valleys
M332Dm South Elkhorn Mountains
M332Dn North Tobacco Root Mountains and Foothills
M332Dp Bridger Mountains and Foothills
M332Ea Continental Divide Uplands
M332Eb East Pioneer Mountains
M332Ec Deerlodge Valley
M332Ee West Pioneer Mountains
M332Eg Anaconda Mountains
M332Eh Beaverhead Mountains
M332Ej Southwest Montana Intermontane Basins and Valleys
M332Ek Ruby/Tobacco Root Mountains
M332En Gravelly/Snowcrest Mountains
M332Ep Blacktail Mountains
M332Er Southern Beaverhead Mountains
M332Gd Snake River Mountains and Canyonlands
M333Aa Pend Oreille/Selkirk Low Mountains and Valleys
M333Ab Selkirk Mountains
M333Ac Northern Idaho Valleys
M333Ba Purcell/North Cabinet Mountains
M333Bb Salish Mountains
M333Bc Flathead River Valley
M333Be Cabinet Mountains
M333Ca Livingston Mountains
M333Cb Whitefish/Swan Mountains
M333Cc Mission/Swan Valley and Mountains
M333Ce Flathead Thrust Faulted Mountains
M333Da Coeur d'Alene Mountains
M333Db St.Joe/Bitterroot Mountains
M333Dc Clark Fork Valley and Mountains
M333Dd North Idaho Hills and Valleys
M333De Clearwater Mountains and Breaks
342Ad Bighorn Intermontane Basin
Beginning_Date_of_Attribute_Values: 10/01/1996
Attribute_Label: SECTION
Attribute_Definition: Section
This is the Section identifier, which is included in the
first 5 digits of the subsection attribute.
Enumerated_Domain_Value Enumerated_Domain_Value_Definition
----------------------- ----------------------------------
331A Palouse Prairie
331D Northwestern Glaciated Plains
331E Northern Glaciated Plains
331F Northwestern Great Plains
331G Powder River Basin
332A Northeastern Glaciated Plains
332B Western Glaciated Plains
342A Bighorn Basin
M331A Yellowstone Highlands
M331B Bighorn Mountains
M332A Idaho Batholith
M332B Bitterroot Valley
M332C Rocky Mountain Front
M332D Belt Mountains
M332E Beaverhead Mountains
M332G Blue Mountains
M333A Okanogan Highlands
M333B Flathead Valley
M333C Northern Rockies
M333D Bitterroot Mountains
Beginning_Date_of_Attribute_Values: 10/01/1996
Attribute_Label: PROVINCE
Attribute_Definition: Province
The province identifier is the first three characters of the
subsection identifier.
Enumerated_Domain_Value Enumerated_Domain_Value_Definition
----------------------- ----------------------------------
332 Great Plains Steppe
M333 Northern Rocky Mountains
331 Great Plains-Palouse Dry Steppe
M332 Middle Rocky Mountains
M331 Southern Rocky Mountains
342 Intermountain Semi-Desert
Beginning_Date_of_Attribute_Values: 10/01/1996
Attribute_Label: ACRES
Attribute_Definition: Acres
This is a calculated value derived from the area field.
Range_Domain
Range_Domain_Minimum: 0
Range_Domain_Maximum: 15823774
Beginning_Date_of_Attribute_Values: 10/01/1996
Metadata_Date: 06/01/2000 Metadata_Contact: Gerry Daumiller