Identification_Information: Citation: Citation_Information: Originator: U.S. Fish & Wildlife Service, National Wetlands Inventory Publication_Date: 1997 Title: National Wetlands Inventory data for portions of Wyoming Publication_Information: Publication_Place: Laramie, Wyoming Publisher: Spatial Data and Visualization Center Online_Linkage: NWI Description: Abstract: Original digital National Wetland Inventory quadrangles converted into Arc/Info coverages with matching attributes. See graphic image for availability of these quadrangles in Wyoming. Purpose: The data provide consultants, planners, and resource managers with information on wetland location and type. The data were collected to meet U.S. Fish & Wildlife Service's mandate to map the wetland and deepwater habitats of the United States. Wetlands are lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water. For purposes of this classification wetlands must have one or more of the following three attributes: 1) at least periodically, the land supports predominantly hydrophytes; 2) the substrate is predominantly undrained hydric soil; and 3) the substrate is non-soil and is saturated with water or covered by shallow water at some time during the growing season of each year. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_date: 19710201 Ending_date: 19921201 Currentness_Reference: source photography date Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -111 East_Bounding_Coordinate: -104 North_Bounding_Coordinate: 45 South_Bounding_Coordinate: 41 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: wetlands Theme_Keyword: palustrine Theme_Keyword: lacustrine Theme_Keyword: riverine Theme_Keyword: marshes Theme_Keyword: National Wetlands Inventory Place: Place_Keyword_Thesaurus: None Place_Keyword: Wyoming Access_Constraints: none Use_Constraints: Federal, State, and local regulatory agencies with jurisdiction over wetlands may define and describe wetlands in a different manner than that used in this inventory. There is no attempt, in either the design or products of this inventory, to define the limits of proprietary jurisdiction of any Federal, State, or local government or to establish the geographical scope of the regulatory programs of government agencies. Persons intending to engage in activities involving modifications within or adjacent to wetland areas should seek the advice of appropriate Federal, State, or local agencies concerning specified agency regulatory programs and proprietary jurisdictions that may affect such activities. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Data Manager Contact_Organization: Spatial Data and Visualization Center Contact_Address: Address_Type: mailing address Address: Box 3355 University Station City: Laramie State_or_Province: Wyoming Country: USA Postal_Code: 82071 Contact_Voice_Telephone: 307-766-2751 Contact_Electronic_Mail_Address: n/a Hours_of_Service: 8 AM to 5 PM MST Browse_Graphic: Browse_graphic_file_name: nwi.gif Browse_graphic_file_description: availability of National Wetlands Inventory data in Wyoming Browse_graphic_file_type: gif Native_Data_Set_Environment: Wyoming Water Resources Center has converted the NWI dlg data provided by NWI into Arc/Info vector coverages, which contain both line (riverine) and polygon (lacustrine and palustrine) wetland features. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attribute accuracy is tested by manual comparison of the source with hard copy printouts and/or symbolized display of the digital wetlands data on an interactive computer graphic system. In addition, WAMS software (USFWS-NWI) tests the attributes against a master set of valid wetland attributes. Logical_Consistency_Report: Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. All nodes are represented by a single coordinate pair which indicates the beginning or end of a line segment. The neatline is generated by connecting the four corners of the digital file, as established during initialization of the digital file. All data crossing the neatline are clipped to the neatline and data within a specified tolerance of the neatline are snapped to the neatline. Tests for logical consistency are performed by WAMS verification software (USFWS-NWI). Completeness_Report: All photo-interpretable wetlands are mapped. In the treeless prairies, 1/4 acre wetlands are mapped. In forested areas, small open water and emergent wetlands are mapped. In general, the minimum mapping unit is from 1 to 3 acres depending on the wetland type and the scale and emulsion of the source aerial photography. In regions of the country where evergreen forested wetlands predominate, wetlands smaller than 3 acres may not be mapped. Thus, a detailed on the ground and historical analysis of a single site may result in a revision of the wetland boundaries established through photographic interpretation. In addition, some small wetlands and those obscured by dense forest cover may not be included in this dataset. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: not available at this time Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Domain includes the U.S. Geological Survey (USGS), U.S. Department of Agriculture (USDA), National Aeronautics and Space Administration (NASA), special project. Information for this element varies for each 7.5' quad. Publication_Date: 1992 Title: Domain includes National Aerial Photography Program (NAPP), National High Altitude Photography (NHAP), Agricultural and Stabilization Conservation Service (ASCS), NASA or special project photography. Information for this element varies for each 7.5' quad. See the quad-specific metadata file. Source_Scale_Denominator: 62000 Type_of_Source_Media: stable based material Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1971 Ending_Date: 1992 Source_Currentness_Reference: photo date Source_Citation_Abbreviation: NWI1 Source_Contribution: Wetlands spatial and attribute information. Source scales range from 1:20,000 to 1:132,000. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1992 Title: topographic map Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston,VA Publisher: U.S. Geological Survey Type_of_Source_Media: stable-base material Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1902 Ending_Date: 1992 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: NWI2 Source_Contribution: Base cartographic data. Scale domain includes 20000, 24000, 25000, 30000, and 62500. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Fish & Wildlife Service, National Wetlands Inventory Publication_Date: 1994 Title: Information for this element varies for each 7.5' quad. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: St.Petersburg,Florida Publisher: U.S. Fish & Wildlife Service, National Wetlands Inventory Type_of_Source_Media: stable-base material Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1979 Ending_Date: 1994 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: NWI3 Source_Contribution: wetlands location and classification. Scale domain includes 20,000, 24000. 25000, 30000, and 62500. Process_Step: Process_Description: NWI maps are compiled through manual photointerpretation of NHAP or NAPP aerial photography supplemented by Soil Surveys and field checking of wetland photo signatures. Delineated wetland boundaries are manually transferred from interpreted photos to USGS 7.5 minute topographic quadrangle maps and then manually labelled. Quality control steps occur throughout the photointerpretation, map compilation, and map reproduction processes. Source_Used_Citation_Abbreviation: NWI1 Source_Used_Citation_Abbreviation: NWI2 Process_Date: 1994 Source_Produced_Citation_Abbreviation: NWI3 Process_Step: Process_Description: Digital wetlands data are either manually digitized or scanned from stable-base copies of the 1:24,000 scale wetlands overlays registered to the standard U.S. Geological Survey (USGS) 7.5 minute quadrangles into topologically correct data files using Wetlands Analytical Mapping System (WAMS) software. Files contain ground planimetric coordinates and wetland attributes. The quadrangles were referenced to the North American Datum of 1927 (NAD27) horizontal datum. The scanning process captured the digital data at a scanning resolution of at least 0.001 inches; the resulting raster data were vectorized and then attributed on an interactive editing station. Manual digitizing used a digitizing table to capture the digital data at a resolution of at least 0.005 inches; attribution was performed as the data were digitized. The determination of scanning versus manual digitizing production method was based on feature density, source map quality, feature symbology, and availability of production systems. The data were checked for position by comparing plots of the digital data to the source material. Source_Used_Citation_Abbreviation: NWI3 Process_Date: 1981-1994 Process_Step: Process_Description: Digital line graph files of NWI were converted into Arc/Info format, tiled into 1:100,000-scale quadrangles for distribution, and attributes standardized and checked. Process_Date: 1997 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.001 Longitude_Resolution: 0.001 Geographic_Coordinate_Units: decimal degrees Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: wetland Entity_Type_Definition: The NWI data from this clearinghouse is available in ARC/INFO coverages as well as ArcView shapefiles. The filename structure tells you what format the data is, as well as what feature type, since wetlands data is available both as polygon features and line (riverine) features. For instance the filename, nwi2e tells you that this zip file contains the NWI data for quadrangle 2 in Wyoming in EXPORT format (index maps and READMEs are available through the clearinghouse for a description of the quadrangle codes), Within this zip file, there will be two export files, one for line features (nwi2le) and one for polygon features (nwi2pe) The filename nwi2s.zip tells you that the zip file contains the same information as above, but in shapefile format (s). Regardless of feature or format, the attribute fields have the same names. NWI_CODE is the main attribute, from which all other attributes are derived. At minimum, the SYSTEM_SUB (highest level hierarchy of the NWI coding scheme) is available; in some cases, additonal fields (TYPE, CLASS) are also available to further break out more detailed levels of the wetlands description. In addition descriptive fields W_REGIME and SPECIAL may be included. These codes are described in two .dbf files type.dbf and class.dbf. Please see the publication cited below or the NWI web site, for more detail about the wetlands classification scheme. Entity_Type_Definition_Source: see citation Cowardin, L.M., V. Carter, F. Golet, and E. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. U.S. Fish Wildlife Service. 103 pp. Overview_Description: Entity_and_Attribute_Overview: The wetland classification system is hierarchical, with wetlands and deepwater habitats divided among five major systems at the broadest level. The five systems include Marine (open ocean and associated coastline), Estuarine (salt marshes and brackish tidal water), Riverine (rivers, creeks, and streams), Lacustrine (lakes and deep ponds), and Palustrine (shallow ponds, marshes, swamps, sloughs). Systems are further subdivided into subsystems which reflect hydrologic conditions. Below the subsystem is the class which describes the appearance of the wetland in terms of vegetation or substrate. Each class is further subdivided into subclasses; vegetated subclasses are described in terms of life form and substrate subclasses in terms of composition. The classification system also includes modifiers to describe hydrology (water regime), soils, water chemistry (pH, salinity), and special modifiers relating to man's activities (e.g., impounded, partly drained). Entity_and_Attribute_Detail_Citation: Cowardin, L.M., V. Carter, F. Golet, and E. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. U.S. Fish Wildlife Service. 103 pp. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Data Manager Contact_Organization: Spatial Data and Visualization Center Contact_Address: Address_Type: mailing address Address: Box 3355 University Station City: Laramie State_or_Province: Wyoming Country: USA Postal_Code: 82071 Contact_Voice_Telephone: 307-766-2751 Contact_Electronic_Mail_Address: n/a Distribution_Liability: The distributor shall not be held liable for improper or incorrect use of this data, based on the description of appropriate/inappropriate used described in this metadata document. It is strongly recommended that this data is directly acquired from the distributor described above or from the National Wetlands Inventory, http://www.nwi.fws.gov, and not through other sources which may have changed the data. This data was developed and is meant to be used at the 1:24,000-scale (or smaller scale) for the purpose of identifying wetlands (by federal NWI definitions) in Wyoming and the distributor makes no claims for the data's suitability for other purposes. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE (Arc/Info export) Format_Version_Number: 7.0.4 Format_Version_Date: 1995 File_Decompression_Technique: Export file was created using defaults, no compression Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: ftp.sdvc.uwyo.edu or http://www.sdvc.uwyo.edu/clearinghouse Access_Instructions: The data can be accessed online two different way: by anonymous ftp or by the world wide web. The anonymous ftp server is ftp.sdvc.uwyo.edu, and the data is stored in the /pub/gis directory. The WWW page is http://www.sdvc.uwyo.edu/clearinghouse. Instructions are provided on-line for downloading and importing the data. Online_Computer_and_Operating_System: Both the ftp and WWW server which this data is available from is a Silicon Graphics Challenge server, running the IRIX 6.2 UNIX operating system. Fees: No fees are required for downloading the data that is on-line. Some fees may be required to cover costs of tapes if data is required on tape media. Metadata_Reference_Information: Metadata_Date: 199709 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Margo Herdendorf Contact_Address: Address_Type: mailing address Address: Box 3355 University Station City: Laramie State_or_Province: Wyoming Postal_Code: 82071 Country: USA Contact_Voice_Telephone: 307-766-2751 Contact_Electronic_Mail_Address: meh@uwyo.edu Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: 19940608