Identification_Information: Citation: Citation_Information: Originator: The Nature Conservancy - Conservation Science Division Publication_Date: 20010422 Title: The Nature Conservancy's Ecoregions of the United States Edition: 2001 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Ecoregional Planning Other_Citation_Details: Information contained in this dataset were manipulated to produce Figure 1.4, Chapter 1, p. 19, in Connelly, J. W., S. T. Knick, M. A. Schroeder, and S. J. Silver. 2004. Conservation assessment of Greater Sage-grouse and sagebrush habitats. Western Association of Fish and Wildlife Agencies. Unpublished Report. Cheyenne, Wyoming. Online_Linkage: http://gis.tnc.org Online_Linkage: http://sagemap.wr.usgs.gov Description: Abstract: Ecoregions of the United States of America. Ecoregional planning units are designed as a basis for comprehensive ecosystem planning. Purpose: This data set was compiled for The Nature Conservancy's Ecoregional Planning purposes Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20010422 Time_of_Day: 1200 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: Bi-annually Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -179.981901 East_Bounding_Coordinate: 179.887476 North_Bounding_Coordinate: 80.317672 South_Bounding_Coordinate: 8.732668 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: The Nature Conservancy Theme_Keyword: TNC Theme_Keyword: Ecoregions Theme_Keyword: Ecoregion Place: Place_Keyword_Thesaurus: None Place_Keyword: United States Place_Keyword: USA Place_Keyword: US Access_Constraints: None, publicly available, freely distributable Use_Constraints: Intended for biodiversity conservation planning Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: The Nature Conservancy Contact_Person: Dan Dorfman Contact_Position: Western Regional GIS Manager Contact_Address: Address_Type: mailing and physical address Address: 2060 Broadway, Suite 230 City: Boulder State_or_Province: CO Postal_Code: 80302 Country: USA Contact_Voice_Telephone: 303-541-0321 Contact_Facsimile_Telephone: 303-449-4328 Contact_Electronic_Mail_Address: ddorfman@tnc.org Hours_of_Service: 9-5 Mountain time Contact_Instructions: please feel free to call Data_Set_Credit: Western Conservation Science Center Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Unknown Logical_Consistency_Report: Unknown Completeness_Report: Contact The Nature Conservancy (see Contact Information) Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Robert Bailey Publication_Date: 1995 Title: Descriptions of the Ecoregions of the United States Edition: 2nd Edition, revised and expanded Series_Information: Issue_Identification: Miscellaneous Publication 1391 Publication_Information: Publication_Place: Washington, DC Publisher: USDA Forest Service Source_Scale_Denominator: 7500000 Type_of_Source_Media: 108 page document and map Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19990915 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Baileys Source_Contribution: Bailey's ecoregions of the conterminous United States Process_Step: Process_Description: Originally based on Bailey, 1994, these boundaries have been extensively modified by TNC's eocregional planning teams. Written justification for each modification is available through The Nature Conservancy's Ecoregional Planning Office. Source_Used_Citation_Abbreviation: Baileys Process_Date: Unknown Source_Produced_Citation_Abbreviation: TNC_Ecoregions_sgca Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 81 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Albers Conical Equal Area Albers_Conical_Equal_Area: Standard_Parallel: 38.000000 Standard_Parallel: 41.000000 Longitude_of_Central_Meridian: -114.000000 Latitude_of_Projection_Origin: 34.000000 False_Easting: 0.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.016384 Ordinate_Resolution: 0.016384 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: TNC_ecoregions_sgca Entity_Type_Definition: Attributes of TNC_ecoregions_sgca.dbf Entity_Type_Definition_Source: ESRI Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: PU_NAME Attribute_Definition: Ecoregion name Attribute_Definition_Source: TNC Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Pacific Northwest Coast Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Puget Trough - Willamette Valley - Georgia Ba Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: North Cascades and Pacific Ranges Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Modoc Plateau and East Cascades Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Klamath Mountains Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Columbia Plateau Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Canadian Rocky Mountains Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Middle Rockies - Blue Mountains Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Utah-Wyoming Rocky Mountains Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Wyoming Basins Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Great Basin Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Sierra Nevada Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Great Central Valley Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: California North Coast Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: California Central Coast Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: California South Coast Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Mojave Desert Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Utah High Plateaus Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Colorado Plateau Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Southern Rocky Mountains Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Arizona-New Mexico Mountains Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Apache Highlands Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Sonoran Desert Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Chihuahuan Desert Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Black Hills Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Northern Great Plains Steppe Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Central Shortgrass Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Southern Shortgrass Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Edwards Plateau Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Tamaulipan Thorn Scrub Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Gulf Coast Prairies and Marshes Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Crosstimbers and Southern Tallgrass Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Central Mixed-Grass Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Dakota Mixed-Grass Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Northern Tallgrass Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Central Tallgrass Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Osage Plains/Flint Hills Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Ozarks Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Ouachita Mountains Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Upper West Gulf Coastal Plain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: West Gulf Coastal Plain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Mississippi River Alluvial Plain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Upper East Gulf Coastal Plain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Interior Low Plateau Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: North Central Tillplain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Prairie-Forest Border Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Superior Mixed Forest Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Great Lakes Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Western Allegheny Plateau Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Cumberlands and Southern Ridge and Valley Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Southern Blue Ridge Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Piedmont Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: East Gulf Coastal Plain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Tropical Florida Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Florida Peninsula Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: South Atlantic Coastal Plain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Mid-Atlantic Coastal Plain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Chesapeake Bay Lowlands Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Central Appalachian Forest Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: High Allegheny Plateau Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Lower New England/Northern Piedmont Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: North Atlantic Coast Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Northern Appalachian-Boreal Forest Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: St. Lawrence-Champlain Valley Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Hawaiian High Islands Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Aspen Parkland Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Fescue-Mixed Grass Prairie Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Okanagan Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Alaska Coastal Forest and Mountains Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Gulf of Alaska Mountains and Fjordlands Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Cook Inlet Basin Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Alaska Peninsula Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Bering Sea and Aleutian Islands Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Bristol Bay Basin Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Beringian Tundra Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Alaska Range Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Interior Alaska Taiga Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Yukon Plateau and Flats Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Brooks Range Tundra Coastal Plain Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: Northern Gulf of Mexico Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Enumerated_Domain: Enumerated_Domain_Value: West Cascades Enumerated_Domain_Value_Definition: contact TNC for more details Enumerated_Domain_Value_Definition_Source: TNC Attribute: Attribute_Label: AREA Attribute_Definition: Area of polygon feature in square meters Attribute_Definition_Source: TNC Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 13263226539.4672 Range_Domain_Maximum: 642346035360.239 Attribute_Units_of_Measure: meters squared Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of polygon feature in meters Attribute_Definition_Source: Computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 589282.91645 Range_Domain_Maximum: 16079442.19957 Attribute_Units_of_Measure: meters Attribute: Attribute_Label: ACRES Attribute_Definition: Area of polygon feature in acres Attribute_Definition_Source: Computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3277343.312 Range_Domain_Maximum: 158723706.424 Attribute_Units_of_Measure: acres Attribute: Attribute_Label: HECTARES Attribute_Definition: Area of polygon feature in hectares Attribute_Definition_Source: Computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1326322.668 Range_Domain_Maximum: 64234603.976 Attribute_Units_of_Measure: hectares Attribute: Attribute_Label: PU_NUM Attribute_Definition: Ecoregion number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Number corresponding to ecoregion Enumerated_Domain_Value_Definition: See Overview Description Enumerated_Domain_Value_Definition_Source: TNC Overview_Description: Entity_and_Attribute_Overview: Ecoregion numbers and their corresponding name: 1 Pacific Northwest Coast 2 Puget Trough - Willamette Valley - Georgia Ba 3 North Cascades and Pacific Ranges 4 Modoc Plateau and East Cascades 5 Klamath Mountains 6 Columbia Plateau 7 Canadian Rocky Mountains 8 Middle Rockies - Blue Mountains 9 Utah-Wyoming Rocky Mountains 10 Wyoming Basins 11 Great Basin 12 Sierra Nevada 13 Great Central Valley 14 California North Coast 15 California Central Coast 16 California South Coast 17 Mojave Desert 18 Utah High Plateaus 19 Colorado Plateau 20 Southern Rocky Mountains 21 Arizona-New Mexico Mountains 22 Apache Highlands 23 Sonoran Desert 24 Chihuahuan Desert 25 Black Hills 26 Northern Great Plains Steppe 27 Central Shortgrass Prairie 28 Southern Shortgrass Prairie 29 Edwards Plateau 30 Tamaulipan Thorn Scrub 31 Gulf Coast Prairies and Marshes 32 Crosstimbers and Southern Tallgrass Prairie 33 Central Mixed-Grass Prairie 34 Dakota Mixed-Grass Prairie 35 Northern Tallgrass Prairie 36 Central Tallgrass Prairie 37 Osage Plains/Flint Hills Prairie 38 Ozarks 39 Ouachita Mountains 40 Upper West Gulf Coastal Plain 41 West Gulf Coastal Plain 42 Mississippi River Alluvial Plain 43 Upper East Gulf Coastal Plain 44 Interior Low Plateau 45 North Central Tillplain 46 Prairie-Forest Border 47 Superior Mixed Forest 48 Great Lakes 49 Western Allegheny Plateau 50 Cumberlands and Southern Ridge and Valley 51 Southern Blue Ridge 52 Piedmont 53 East Gulf Coastal Plain 54 Tropical Florida 55 Florida Peninsula 56 South Atlantic Coastal Plain 57 Mid-Atlantic Coastal Plain 58 Chesapeake Bay Lowlands 59 Central Appalachian Forest 60 High Allegheny Plateau 61 Lower New England/Northern Piedmont 62 North Atlantic Coast 63 Northern Appalachian-Boreal Forest 64 St. Lawrence-Champlain Valley 65 Hawaiian High Islands 66 Aspen Parkland 67 Fescue-Mixed Grass Prairie 68 Okanagan 69 Alaska Coastal Forest and Mountains 70 Gulf of Alaska Mountains and Fjordlands 71 Cook Inlet Basin 72 Alaska Peninsula 73 Bering Sea and Aleutian Islands 74 Bristol Bay Basin 75 Beringian Tundra 76 Alaska Range 77 Interior Alaska Taiga 78 Yukon Plateau and Flats 79 Brooks Range Tundra Coastal Plain 80 Northern Gulf of Mexico 81 West Cascades Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS Snake River Field Station Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 970 Lusk St. City: Boise State_or_Province: ID Postal_Code: 83706 Country: USA Contact_Voice_Telephone: 208-426-5204 Contact_Facsimile_Telephone: 208-426-5210 Contact_Electronic_Mail_Address: tzarriel@usgs.gov Resource_Description: Downloadable data Distribution_Liability: We make every effort to provide and maintain accurate, complete, usable, and timely information on our web sites. However, some USGS data and information accessed through these pages may, of necessity, be preliminary in nature and presented prior to final review and approval by the Director of the USGS. These data and information are provided with the understanding that they are not guaranteed to be correct or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. 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