IDENTIFICATION_INFORMATION Citation: Citation_Information: Originator: States West Water Resources Corporation Publication_Date: 2000 Title: Green River Basin Irrigated Lands from 1998 Satellite Photography Edition: 1 Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Cheyenne, Wyoming Publisher: States West Water Resources Other_Citation_Details: Online_Linkage: http://waterplan.state.wy.us/ Larger_Work_Citation: Citation_Information: Originator: States West Water Resources Corporation Publication_Date: 20001231 Title: Green River Basin Water Plan Publication_Information: Publication_Place: Cheyenne, Wyoming Publisher: Wyoming Water Development Commission Online_Linkage: http://waterplan.state.wy.us/ Description: Abstract: This data set is a polygon coverage. It only contains irrigated acreage in the Green River, Little Snake, and Great Divide basin within Wyoming. The initial interpretation of irrigated lands due to the works of man was taken from 1982 and 1983 aerial infra-red photos. The interpretation was then revised with 1999infra-red satellite photography. Upon completion of digitizing these areas, StateEngineer personnel provided comments for proposed alterations to the delineation. The data structure for this data set is based on graph theory, in which a two-dimensional diagram is expressed as a set of spatial objects in a manner that explicitly expresses logical relationships. Applied to a map, this concept is used to encode the spatial relationships between the objects, including such concepts as adjacency and connectivity between objects. A topologically structured data file can support graphic applications,as well as computations and analyses involving the spatial objects and their spatialrelationships. Irrigated lands and sub-irrigated lands are differentiated. Purpose: This GIS map and dataset serves to augment the Green River Basin Water Plan. Supplemental_Information: Time_Period_of_Content: Time_Period_Information: Single Date/Time Calendar Date: 2000 Currentness Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -110.75 East_Bounding_Coordinate: -107 North_Bounding_Coordinate: 43.5 South_Bounding_Coordinate: 41.0 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme Keyword: irrigated lands Theme Keyword: hydrography Theme Keyword: groundwater irrigation Theme Keyword: surface water irrigation Theme Keyword: man made wetlands Theme_Keyword: land use Place: Place_Keyword_Thesaurus: None Place_Keyword: Green River Place Keyword: Little Snake River Place Keyword: Great Divide Basin Place_Keyword: Carbon County Place_Keyword: Lincoln County Place_Keyword: Sublette County Place_Keyword: Sweetwater County Place_Keyword: Uinta County Place_Keyword: Wyoming Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Water Resources Data System (Owner - Water Development Commission) Contact_Position: Coordinator, WRDS Contact_Address: Address_Type: mailing and physical address Address: P.O. Box 3943 City: Laramie State_or_Province: Wyoming Postal_Code: 82071 Country: USA Contact_Voice_Telephone: 307-766-6651 Contact_Facsimile_Telephone: 307-766-3785 Contact_Electronic_Mail_Address: wrds@uwyo.edu Contact_URL: http://www.wrds.uwyo.edu Hours_of_Service: 8 a.m. - 5 p.m. M-F MST Native_Data_Set_Environment: ArcCad version 14 DATA_QUALITY_INFORMATION Attribute_Accuracy: Attribute_Accuracy_Report: Attribute accuracy is tested by manual comparison of the source with hard copy photos and the mapped alterations from the State Engineer district superintendents. Selected attributes that can not be visually verified on plots or on screen are interactively queried and verified on screen. Logical_Consistency_Report: Certain node/geometry and topology (GT)- polygon/chain relationships are collected or generated to satisfy topological requirements. (The GT-polygon corresponds to the delineated area). Some of these requirements include: chains must begin and end at nodes, chains must connect to each other at nodes, chains do not extend through nodes, left and right GT-polygons are defined for each chain element and are consistent throughout the data set. The tests of logical consistency are performed by ESRI ARCAD program. All internal polygons are tested for closure. Completeness_Report: Data completeness for digital files reflects the content and scale of the source graphic. Features may have been eliminated or generalized due to scale and legibility constraints. The digital data includes only those features that are photoidentifiable on monoscopic source, supplemented with field observation. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal Positional Accuracy Report: As a base map, United States Geologic Survey digital quadrangles were used for spatial relationship to the non rectified infra-red aerial photos. Accuracy of these digital data (if not digitally revised), is based upon the use of source graphics which are compiled to meet National Map Accuracy Standards. NMAS horizontal accuracy requires that at least 90 percent of points tested are within 0.02 inches of the true position. The digital data are estimated to contain a horizontal positional error of less than or equal to 0.003 inches standard error in the two component directions relative to the source graphic. NMAS vertical accuracy requires that at least 90% of well defined points tested be within one half contour interval of the correct value. Comparison to the graphic source is used as control to assess digital positional accuracy. Cartographic offsets may be present on the graphic source, due to scale and legibility constraints. Digital map elements require edge alignment between data sets. Data along each quadrangle edge are tested against the data set for the adjacent quadrangle; tests check for positional accuracy between data sets within a 0.02 inches tolerance. Features with like dimensionality, and with or without like attribution, that are within the tolerance are adjusted by moving the feature equally in both data sets. Features outside the tolerance are not moved. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Landsat Publication_Date: 1997-1999 Title: Satellite Imagery Geospatial_Data_Presentation_Form: digital georeferenced infrared photo image Publication_Information: Publication_Place: Thornton, CO Publisher: Space Imaging Other_Citation_Details: Online_Linkage: Source_Scale_Denominator: 24,000 Type_of_Source_Media: digital infrared satellite image Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19970101 Ending_Date: 19990731 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: landsat Source_Contribution: Used to update 1983 data. Source_Information: Source_Citation: Citation_Information: Originator: Landsat Publication_Date: 19850200 Title: Irrigated Acreage Summary by Quadrangle, Wyoming's Green River Basin Edition: 1983 Geospatial_Data_Presentation_Form: maps Publication_Information: Publication_Place: Cheyenne, Wyoming Publisher: Wyoming Water Development Commission Other_Citation_Details: Online_Linkage: Source_Scale_Denominator: 24,000 Type_of_Source_Media: infrared satellite photos Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19830101 Ending_Date: 19831231 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: landsat Source_Contribution: Established irrigated lands (including riparian) for 1983. Process_Step: Process_Description: The irrigated lands coverage was digitized from photo interpretation on clear mylar USGS quad overlays. The overlays were produced from digital USGS quads plotted at their source scale of 1:24000. These clear maps were then used in conjunction with non-rectified infra-red aerial photography to delineate all lands irrigated by the works of man. The photography is a product of the Wyoming Water Development Commission that was flown during the summers of 1982 and 1983. The interpretation was then revised with 1999 infra-red satellite photography. Upon completion of these initial stages, the preliminary plots were distributed to the appropriate State Engineer's Office personnel for comment. Their changes were discussed, checked and incorporated into the mapping. A second set of preliminary maps was then produced for a check before finalization of the irrigated lands. These maps were checked for position by comparing plots of the digital data to the graphic source. The manual digitizing used a digitizing table to capture the digital data at a resolution of at least .01 inches. The attribution was added upon completion of the digitization. Two control points corresponding to two of the four quadrangle corners were used for registration during the data collection. The data was digitized directly into Wyoming, Zone II, East Central; Wyoming, Zone III, West Central; Wyoming, Zone IV, West coordinates. Coordinate transformation was performed to connect the adjoining coverages. Source Used Citation Abbreviation: SWWRC Process Date: 2000 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Organization: States West Water Resources Corporation Contact_Position: Project Engineer Contact_Address: Address_Type: mailing and physical address Address: 1904 E. 15th Street City: Cheyenne State_or_Province: Wyoming Postal_Code: 82001 Country: USA Contact_Facsimile_Telephone: 307-634-7851 Contact_Electronic_Mail_Address: stateswest@aol.com SPATIAL_DATA_ORGANIZATION_INFORMATION Direct_Spatial_Reference_Method: Vector SPATIAL_REFERENCE_INFORMATION Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: geographic Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: Coordinate pair Planar_Distance_Units: dd Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clark 1866 Semi-major_Axis: 6,378,137 Denominator_of_Flattening_Ratio: 298.257 ENTITY_AND_ATTRIBUTE_INFORMATION Detailed_Description: Entity_Type: Entity_Type_Label: pat.dbf Entity_Type_Definition: Polygon Attribute Table Entity_Type_Definition_Source: None Attribute: Attribute_Label: ID Attribute_Definition: Unique polygon identifier used as link to rights coverage. Attribute: Attribute_Label: Quad Attribute_Definition: Corresponding 7.5' Topographic Quad. Attribute_Definition_Source: Index of 7.5' Wyoming Topo. Quads Attribute: Attribute_Label: Acreage Attribute_Definition: Acres represented by polygon Attribute_Definition_Source: Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: < 0.1 Range_Domain_Maximum: 14241.4 Attribute: Attribute_Label: Island Attribute_Definition: Irrigated Land Type flag field Enumerated_Domain: Enumerated_Domain_Value: 0 Enumerated_Domain_Value_Definition: Irrigated Lands Enumerated_Domain_Value_Definition_Source: SWWRC Enumerated_Domain_Value: 1 Enumerated_Domain_Value_Definition: Island of non-irrigated land within irrigated polygon Enumerated_Domain_Value_Definition_Source: SWWRC Enumerated_Domain_Value: 2 Enumerated_Domain_Value_Definition: Man-made wetlands Enumerated_Domain_Value_Definition_Source: SWWRC Attribute: Attribute_Label: basins_id Attribute_Definition: Numeric representation of (sub-)basin (below) Attribute_Definition_Source: SWWRC Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 28 Attribute: Attribute_Label: basin Attribute_Definition: sub-basin within Greater Green River Basin Attribute_Definition_Source: SWWRC DISTRIBUTION_INFORMATION Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Water Resources Data System (Owner - Water Development Commission) Contact_Position: Coordinator, WRDS Contact_Address: Address_Type: mailing and physical address Address: P.O. Box 3943 City: Laramie State_or_Province: Wyoming Postal_Code: 82071 Country: USA Contact_Voice_Telephone: 307-766-6651 Contact_Facsimile_Telephone: 307-766-3785 Contact_Electronic_Mail_Address: wrds@uwyo.edu Contact_URL: http://www.wrds.uwyo.edu Hours_of_Service: 8 a.m. - 5 p.m. M-F MST Resource_Description: Distribution_Liability: These data were generated for use in conjunction with the 'Green River Basin Plan.' The Wyoming Water Development Commission (WWDC) and the Water Resources Data System (WRDS) do not warrant, endorse, or recommend the use of these data for any other purpose. The user assumes the entire risk related to the use of these data. WWDC and WRDS are providing these data "as is," and WWDC and WRDS disclaims any and all warranties, whether expressed or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. Custom_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Topological Vector Profile Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Format: ESRI transferable EOO files. Online_Option: Network_Resource_Name: http://waterplan.state.wy.us/ Access Instructions: The data can be accessed via the World Wide Web. Instructions are provided on-line for downloading and importing the data. Fees: No fees are required for downloading the data that is on-line. Some fees may be required to cover the costs of CD-ROM. METADATA_REFERENCE_INFORMATION Metadata_Date: 20001027 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: States West Water Resources Corporation Contact_Position: GIS Analyst Contact_Address: Address_Type: Mailing and physical address Address: 1904 E. 15th Street City: Cheyenne State_or_Province: Wyoming Postal_Code: 82001 Country: USA Contact_Facsimile_Telephone: 307-634-7851 Contact_Electronic_Mail_Address: stateswest@aol.com Hours_of_Service: 8 a.m. to 5 p.m. M-F Metadata_Standard_Name: FGDC CSDGM Metadata_Standard_Version: FGDC-STD-001-1998