Ecological Unit Subsections, USFS Northern Region Montana State Library GIS Data Dictionary Metadata for Ecological Unit Subsections, USFS Northern Region Table of Contents Identification Information Data Quality Information Spatial Data Organization Information Spatial Reference Information Entity and Attribute Information Distribution Information Metadata Reference Information Full FGDC-compliant Metadata Browse Graphic Identification_Information: 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 Data_Quality_Information: 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 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information Number of Arcs: 359 Number of Polygons: 117 Number of Polygon Labels: 116 Spatial_Reference_Information: 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_and_Attribute_Information: 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 Distribution_Information: Metadata_Reference_Information: Metadata_Date: 06/01/2000 Metadata_Contact: Gerry Daumiller