Metadata: Identification_Information: Citation: Citation_Information: Originator: A Woods (Dynamac), S Bryce (Dynamac), J Omernik (EPA), ... Publication_Date: 2003 Publication_Time: Title: Level III and IV Ecoregions of Oregon Edition: 1 Geospatial_Data_Presentation_Form: map Series_Name: Issue_Identification: Publication_Information: Publication_Place: Publisher: Other_Citation_Details: Online_Linkage: Description: Abstract: Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources; they are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By recognizing the spatial differences in the capacities and potentials of ecosystems, ecoregions stratify 1999). Ecoregions are critical for structuring and implementing ecosystem management strategies across federal agencies, state agencies, and nongovernment organizations that are responsible for different types of resources within the same geographical areas (Omernik and others, 2000). The approach used to compile this map is based on the premise that ecological regions can be identified through the analysis of the spatial patterns and the composition of biotic and abiotic phenomena that affect or reflect differences in ecosystem quality and integrity (Wiken, 1986; Omernik, 1987, 1995). These phenomena include geology, physiography, vegetation, climate, soils, land use, wildlife, and hydrology. The relative importance of each characteristic varies from one ecological region to another regardless of the hierarchical level. A Roman numeral hierarchical scheme has been adopted for different levels of ecological regions. Level I is the coarsest level, dividing North America into 15 ecological regions. Level II divides the continent into 52 regions (Commission for Environmental Cooperation Working Group, 1997). At level III, the continental United States contains 104 ecoregions and the conterminous United States has 84 ecoregions (United States Environmental Protection Agency [USEPA], 2000). Level IV is a further subdivision of level III ecoregions. Explanations of the methods used to define the USEPA's ecoregions are given in Omernik (1995), Omernik and others (2000), Griffith and others (1994), and Gallant and others (1989). Oregon contains forested mountains, woodland- shrubland- and forest-covered hills, shrub- and grass-covered plains, agricultural valleys, glaciated peaks, volcanic plateaus, coastal headlands, marine terraces, beaches, playas and wetlands. Ecological diversity is enormous. The west receives plentiful precipitation during the fall, winter, and spring. The eastern 2/3 in the rain shadow of the Cascade Range and is much drier than the west. There are 9 level III ecoregions and 65 level IV ecoregions in Oregon and many continue into ecologically similar parts of adjacent states (Bryce and others, in press). This level III and IV ecoregion map was compiled at a scale of 1:250,000. The western part was originally published as part of Pater and others (1998). The level IV lines in the Columbia Plateau and Blue Mountains were originally published in Clarke and Bryce (1997). Ecoregion boundaries in the remainder of Oregon depict revisions and subdivisions of earlier level III ecoregions that were originally compiled at a smaller scale (USEPA, 1996; Omernik, 1987). This poster is the product of a collaborative effort primarily between the USEPA Region X, the USEPA National Health and Environmental Effects Research Laboratory (Corvallis, Oregon), the Oregon Natural Heritage Program, the United Department of Agriculture-Natural Resources Conservation Service (NRCS) (formerly the Soil Conservation Service), and the United States Department of the Interior-Geological Survey (USGS)-Earth Resources Observation Systems (EROS) Data Center. The Oregon ecoregion project is associated with an interagency effort to develop a common framework of ecological regions. Reaching that objective requires recognition of the differences in the conceptual approaches and mapping methodologies applied to develop the most common ecoregion-type frameworks, including those developed by the USFS (Bailey and others, 1994), the USEPA (Omernik, 1987, 1995), and the NRCS (U.S. Department of Agriculture- Soil Conservation Service, 1981). As each of these frameworks is further refined, their differences are becoming less discernible. Regional collaborative projects such as this one in Oregon, where agreement has been reached among multiple resource management agencies, are a step toward attaining consensus and consistency in ecoregion frameworks for the entire nation. Literature Cited: Bailey, R.G., Avers, P.E., King, T., and McNab, W.H., eds., 1994, Ecoregions and subregions of the United States (map) (supplementary table of map unit descriptions compiled and edited by McNab, W.H. and Bailey, R.G.): Washington, D.C., USFS, scale 1:7,500,000. Bryce, S.A., Omernik, J.M., and Larsen, D.P., 1999, Ecoregions - a geographic framework to guide risk characterization and ecosystem management: Environmental Bryce, S.A., Woods A.J., Morefield, J.D., Omernik, J.M., McKay, T.R., Brackley, G.K., Hall, R.K., Higgins, D.K., McMorran, D.C., Vargas, K.E., Petersen, E.B., Zamudio, D.C., and Comstock, J.A., 2002, Ecoregions of Nevada: Reston, Virginia, U.S. Geological Survey, map scale 1:1,350,000. Clarke, S.E., and Bryce, S.A., eds., Hierarchical subdivisions of the Columbia Plateau and Blue Mountains Ecoregions, Oregon and Washington: Portland, Oregon, Commission for Environmental Cooperation Working Group, 1997, Ecological regions of North America - toward a common perspective: Montreal, Commission for Environmental Cooperation, 71 p. Gallant, A.L., Whittier, T.R., Larsen, D.P., Omernik, J.M., and Hughes, R.M., 1989, Regionalization as a tool for managing environmental resources: Corvallis, Griffith, G.E., Omernik, J.M., Wilton, T.F., and Pierson, S.M., 1994, Ecoregions management: Journal of the Iowa Academy of Science, v. 101, no. 1, p. 5-13. McGrath, C.L., Woods A.J., Omernik, J.M., Bryce, S.A., Edmondson, M., Nesser, J.A., Shelden, J., Crawford, R.C., Comstock, J.A., and Plocher, M.D., 2002, Ecoregions of Idaho: Reston, Virginia, U.S. Geological Survey, map scale 1:1,350,000. Omernik, J.M., 1987, Ecoregions of the conterminous United States (map supplement): Annals of the Association of American Geographers, v. 77, no. 1, p. 118-125, scale 1:7,500,000. Omernik, J.M., 1995, Ecoregions - a framework for environmental management, in Davis, W.S. and Simon, T.P., eds., Biological assessment and criteria-tools for water resource planning and decision making: Boca Raton, Florida, Lewis Publishers, p. 49-62. Omernik, J.M., Chapman, S.S., Lillie, R.A., and Dumke, R.T., 2000, Ecoregions of Wisconsin: Transactions of the Wisconsin Academy of Sciences, Arts, and Letters, v. 88, p. 77-103. Pater, D.E., Bryce, S.A., Thorson, T.D., Kagan, J., Chappell, C., Omernik, J.M., Azevedo, S.H., and Woods, A.J., 1998, Ecoregions of Western Washington and Oregon: Reston, Virginia, U.S. Geological Survey, map scale 1:1,350,000. U.S. Department of Agriculture-Soil Conservation Service, 1981, Land resource regions and major land resource areas of the United States: Agriculture Handbook 296, 156 p. U.S. Environmental Protection Agency, 2000, Level III ecoregions of the continental United States (revision of Omernik, 1987): Corvallis, Oregon, USEPA - National Health and Environmental Effects Research Laboratory, Map M-1, various scales. Wiken, E., 1986, Terrestrial ecozones of Canada: Ottawa, Environment Canada, Ecological Land Classification Series no. 19, 26 p. Keywords: ecoregions, ecosystems, resource management, regional geography Purpose: Assist managers of aquatic and terrestrial resources in understanding the regional patterns of of the realistically attainable quality of these resources. Supplemental_Information: Procedures_Used: 1) All ecoregion and subregion delineations are digitized from the U.S.G.S. 1:250,000 base maps. Prior to digitizing each base map must be initialized to orient the map and relate it in geographic coordinates to the surface of the earth. When the registration tics are entered at the start of digitizing a transformation error of <0.003 must be achieved in order to insure a high level of registration accuracy. The person responsible for digital data entry completes a data sheet describing coverage name, date of entry, and whether a topology for the coverage is established. 2) After each 1:250,000 base map has been digitized, a topology for each coverage is established. This function creates unique identities for each polygon. 3) Next each base map is tested for polygon errors through an internal editing function. Errors are corrected for unlabeled polygons, unclosed polygons, or polygons with more than one label. Topology is reestablished for each coverage and tested again until no error are indicated. 4) The digital coverage is then plotted at the same scale as the original base map. This coverage is overlaid on a light table with the original and visually inspected for replication of original lines with digitized lines. Two individuals independently inspect the coverage for accuracy. Revisions: Revision 1. 9/95. This coverage was appended from completed Level IV coverages in Oregon and Washington [Coast Range (completed 9/92), Blue Mountains and Columbia Plateau (7/95), Puget lowlands, Willamette Valley, Cascades, East Cascade Slope, North Cascades and Klamath Mountains ecoregions (6/95 2. 6/96 update coverage. delete 'hatched' areas. Consolidate all volcanics. updated lines per Sandy and Davids requests. 3. Revised level IV ecoregions in E. Oregon and E. Washington and added ecoregions for Idaho. 11/00 4. Revised level IV regions of 15h in Northern Idaho, Washington, and Montana. 10/01 5. Revised level IV regions of 80 adding ecoregion 80m 4/2002. 6. Revised level IV regions of 10 adding ecoregion 10n. 6/2002 jac 7. Revised level IV ecoregions for 4f and 4b where the original 4f has been eliminated and 4g has come north to incorporate was 4f and 4g. Ecoregion for 4g has been renamed 4f, Southern Cascades. 10/2002 jac Reviews_Applied_to_Data: Data was reviewed by David Pater, MERSC, 9/95. Data was reviewed by David Pater, and Sandy Bryce, MERSC, 6/96. Data was reviewed by Alan Woods, Dynamac, 11/00 Data was reviewed by Alan Woods, Dynamac, 10/01 Data reviewed by Alan Woods, Dynamac, 4/2002 Data reviewed by Alan Woods, Dynamac, 6/2002 Revisions reviewed by Sandy Bryce, Dynamac, 10/2002 Related_Spatial_and_Tabular_Data_Sets: Other_References_Cited: Gallant, A.L., T.R. Whittier, D.P. Larsen, J.M. Omernik, and R.M. Hughes. EPA/600/3-89/060. U.S. Environmental Protection Agency, Environmental Res Laboratory, Corvallis,OR. 152p. Griffith, G.E., J.M. Omernik, and S.H. Azevedo. 1995 (Draft). Ecoregions subregions of Tennessee. U.S. Environmental Protection Agency, Environmen Research Laboratory, Corvallis, OR. 29p. Griffith, G.E, J.M. Omernik, T.F. Wilton, and S.M. Pierson. 1994. Ecoregi The Journal of the Iowa Academy of Sciences 101(1):5-13. Omernik, J.M. 1987. Ecoregions of the conterminous United States. Map Sup Omernik, J.M. 1995. Ecoregions: A spatial framework for environmental management. In: Biological Assessment and Criteria: Tools for Water Reso Planning and Decision Making. W.S. Davis and T.P. Simon (eds.). Lewis Publishers, Boca Raton, FL. Pp. 49-62. U.S. Environmental Protection Agency. 1995. Level III Ecoregions of the Continental United States, Map M-1 (revision of Omernik, 1987). Corvallis Environmental Research Laboratory, Corvallis, Oregon. Wilken, E. 1986. Terrestrial ecozones of Canada. Environment Canada. Ecological Land Classification Series No. 19. Ottawa, Canada. Notes: Level IV ecoregion lines were delineated by Sandy Thiele and David Pater on the paper 1:250,000 maps using a relatively thick marking pen (Sharpie like). Digitizing was done directly off of paper. Coast Range was digitized by Sue Pierson, Ogden, 1992. Columbia Plateau was digitized by F. Faure, 1994, second revision digitized by S. Azevedo, 1995. Blue Mtns. were digitized by S. Azevedo, 1995. Puget lowlands, Willamette Valley, Cascades, East Cascade Slope, North Cascades and Klamath Mountains ecoregions were digitzed by S. Azevedo, 1995. Level IV ecoregions for central Oregon were revised and ecoregions were delineated for E. Oregon, E. Washington by Alan Woods and Sandy Bryce, Dynamac. Digitizing and map composition by Jeff Comstock, OAO, 11/00. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 9/95 Currentness_Reference: Status: Progress: Maintenance_and_Update_Frequency: Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -126.00716922 East_Bounding_Coordinate: -115.46908458 North_Bounding_Coordinate: 47.54617866 South_Bounding_Coordinate: 40.6794784 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Level III and IV Ecoregions of Oregon Place: Place_Keyword_Thesaurus: None Place_Keyword: Oregon Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: None Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: None Access_Constraints: Use_Constraints: for use at 1:250,000 or smaller scales Point_of_Contact: Data_Set_Credit: Security_Information: Security_Classification_System: None Security_Classification: Unclassified Security_Handling_Description: None Native_Data_Set_Environment: SunOS, 5.7, sun4u UNIX, ARC/INFO version 8.1 Cross_Reference: Citation_Information: Originator: Publication_Date: Publication_Time: Title: Level III and IV Ecoregions of Oregon Edition: Geospatial_Data_Presentation_Form: Series_Information: Series_Name: Issue_Identification: Publication_Information: Publication_Place: Publisher: Other_Citation_Details: Online_Linkage: Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: See Entity_Attribute_Information Quantitative_Attribute_Accuracy_Assessment: Attribute_Accuracy_Value: See Explanation Attribute_Accuracy_Explanation: Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section. 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None Process_Date: 20021007 Process_Time: 1718 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/UBER2/DATA/JOBS/J404.JIM.US4/WORK2/USECO_L4 Source_Used_Citation_Abbreviation: None Process_Date: 20021007 Process_Time: 1740 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/UBER2/DATA/JOBS/J404.JIM.US4/WORK2/USECO_L4 Source_Used_Citation_Abbreviation: None Process_Date: 20021007 Process_Time: 1741 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/UBER2/DATA/JOBS/J404.JIM.US4/WORK2/USECO_L4 Source_Used_Citation_Abbreviation: None Process_Date: 20021007 Process_Time: 1753 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/UBER2/DATA/JOBS/J404.JIM.US4/WORK2/USECO_L4 Source_Used_Citation_Abbreviation: None Process_Date: 20021015 Process_Time: 1711 Source_Produced_Citation_Abbreviation: 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None Process_Date: 20021015 Process_Time: 1805 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/UBER2/DATA/JOBS/J404.JIM.US4/WORK2/USECO_L4 Source_Used_Citation_Abbreviation: None Process_Date: 20021015 Process_Time: 1806 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/UBER2/DATA/JOBS/J404.JIM.US4/WORK2/USECO_L4 Source_Used_Citation_Abbreviation: None Process_Date: 20021016 Process_Time: 0836 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK DOCUMENT USECO_L4 UPDATE COMSTOCK Source_Used_Citation_Abbreviation: None Process_Date: 20021016 Process_Time: 0841 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK COPY USECO_L4 /DISK/GIS4/ECOREGIONS/OMERNIK/USECO_L4 Source_Used_Citation_Abbreviation: None Process_Date: 20021016 Process_Time: 0846 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK CLIP USECO_L4 /DISK/GIS1/POLITICAL/STATE-COUNTY/OR_STATE OR_ECO NET .01 Source_Used_Citation_Abbreviation: None Process_Date: 20021016 Process_Time: 0904 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK DOCUMENT OR_ECO COPY /DISK/UBER2/DATA/JOBS/J404.JIM.US4/LEVEL4_NEW/ Source_Used_Citation_Abbreviation: None Process_Date: 20021016 Process_Time: 0910 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK DOCUMENT OR_ECO UPDATE COMSTOCK Source_Used_Citation_Abbreviation: None Process_Date: 20021016 Process_Time: 0923 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK EXPORT COVER OR_ECO OR_ECO.E00 Source_Used_Citation_Abbreviation: None Process_Date: 20021016 Process_Time: 1116 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/GIS4/ECOREGIONS/OMERNIK/OR_ECO Source_Used_Citation_Abbreviation: None Process_Date: 20021017 Process_Time: 1614 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/GIS4/ECOREGIONS/OMERNIK/OR_ECO Source_Used_Citation_Abbreviation: None Process_Date: 20021017 Process_Time: 1615 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/GIS4/ECOREGIONS/OMERNIK/OR_ECO Source_Used_Citation_Abbreviation: None Process_Date: 20021017 Process_Time: 1615 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/GIS4/ECOREGIONS/OMERNIK/OR_ECO Source_Used_Citation_Abbreviation: None Process_Date: 20021017 Process_Time: 1617 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK ARCEDIT /DISK/GIS4/ECOREGIONS/OMERNIK/OR_ECO Source_Used_Citation_Abbreviation: None Process_Date: 20021104 Process_Time: 1630 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK BUILD OR_ECO POLY Source_Used_Citation_Abbreviation: None Process_Date: 20021104 Process_Time: 1637 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK EXPORT COVER OR_ECO OR_ECO.E00 Source_Used_Citation_Abbreviation: None Process_Date: 20021104 Process_Time: 1646 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK DOCUMENT OR_ECO UPDATE COMSTOCK Source_Used_Citation_Abbreviation: None Process_Date: 20021204 Process_Time: 1350 Source_Produced_Citation_Abbreviation: None Process_Step: Process_Description: COMSTOCK EXPORT COVER OR_ECO OR_ECO.E00 Source_Used_Citation_Abbreviation: None Process_Date: 20021204 Process_Time: 1634 Source_Produced_Citation_Abbreviation: None Cloud_Cover: Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 259 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 918 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 260 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Albers Conical Equal Area Albers_Conical_Equal_Area: Standard_Parallel: 29.5 Standard_Parallel: 45.5 Longitude_of_Central_Meridian: -96 Latitude_of_Projection_Origin: 23 False_Easting: 0.00000 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1.0 Ordinate_Resolution: 1.0 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: Unknown Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 'OR_ECO.'' ''' Entity_Type_Definition: Polygon Attribute table Entity_Type_Definition_Source: 1:250,000 topo maps Attribute: Attribute_Label: - Attribute_Definition: Polygon Attribute table Attribute_Definition_Source: 1:250,000 topo maps Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Area of poly/region in square coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of poly/region in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: OR_ECO# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: OR_ECO-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: ECO Attribute_Definition: Level 4 ecoregion code Attribute_Definition_Source: 1:250,000 quad maps Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Numeric and Alphabetic characters Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: HATCH Attribute_Definition: Indicates volcanics or rainshadow in Coast Range Attribute_Definition_Source: 1:250,000 topo maps Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Entity_Type: Entity_Type_Label: OR_ECO.AAT Entity_Type_Definition: Arc attribute table Entity_Type_Definition_Source: 1:250,000 topo maps Attribute: Attribute_Label: - Attribute_Definition: Arc attribute table Attribute_Definition_Source: 1:250,000 topo maps Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal number of from-node Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal number of to-node Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal number of poly to left of arc Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal number of poly to right of arc Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of arc in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: OR_ECO# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: OR_ECO-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LNTYPE Attribute_Definition: Level III or level IV line Attribute_Definition_Source: 1:250,000 topo maps Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 111- level IV arc, 222- level III arc, 999-other Enumerated_Domain_Value_Definition: Enumerated_Domain_Value_Definition_Source: Overview_Description: Entity_and_Attribute_Overview: OR_ECO.PAT ECO - ecoregion ID code 1 Coast Range 1a Coastal Lowlands 1b Coastal Uplands 1d Volcanics 1f Willapa Hills 1g Mid-Coastal Sedimentary 1h Southern Oregon Coastal Mountains 1i Redwood Zone 3 Willamette Valley 3a Portland/Vancouver Basin 3b Willamette River and Tributaries Gallery Forest 3c Prairie Terraces 3d Valley Foothills 4 Cascades 4a Western Cascades Lowlands and Valleys 4b Western Cascades Montane Highlands 4c Cascade Crest Montane Forest 4d Cascade Subalpine/Alpine 4e High Southern Cascades Montane Forest 4f Southern Cascades 9 Eastern Cascade Slope and Foothills 9b Grand Fir Mixed Forest 9c Oak/Conifer Foothills 9d Ponderosa Pine/Bitterbrush Woodland 9e Pumice Plateau 9f Pumice Plateau Basins 9g Klamath/Goose Lake Basins 9h Fremont Pine/Fir Forest 9i Southern Cascade Slope 9j Klamath Juniper Woodland 10 Columbia Plateau 10c Umatilla Plateau 10e Pleistocene Lake Basins 10g Yakima Folds 10i Deep Loess Foothills 10k Deschutes/John Day Canyons 10n Umatilla Dissected Uplands 11 Blue Mountains 11a John Day/Clarno Uplands 11b John Day/ Clarno Highlands 11c Maritime-Influenced Zone 11d Melange 11e Wallowas/Seven Devils Mountains 11f Canyons and Dissected Highlands 11g Canyons and Dissected Uplands 11h Continental Zone Highlands 11i Continental Zone Foothills 11k Blue Mountain Basins 11l Mesic Forest Zone 11m Subalpine-Alpine Zone 11n Deschutes River Valley 11o Cold Basins 12 Snake River Plain 12a Treasure Valley 12b Lava Fields 12j Unwooded Alkaline Foothills 78 Klamath Mountains 78a Rogue/Illinois Valleys 78b Siskiyou Foothills 78c Umpqua Interior Foothills 78d Serpentine Siskiyous 78e Inland Siskiyous 78f Coastal Siskiyous 78g Klamath River Ridges 80 Northern Basin and Range 80a Dissected High Lava Plateau 80d Pluvial Lake Basins 80e High Desert Wetlands 80f Owyhee Uplands and Canyons 80g High Lava Plains 80j Semiarid Uplands 80k Partly Forested Mountains 80l Salt Shrub Valleys 80m Barren Playas Entity_and_Attribute_Detail_Citation: Not Available Distribution_Information: Metadata_Reference_Information: Metadata_Date: 19021204 Metadata_Contact: Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: 19940608 Metadata_Time_Convention: Local Time Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None