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Layer: Douglas County Watersheds (ID: 11)

Name: Douglas County Watersheds

Display Field: NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The USDA Geospatial Data Gateway version of the Watershed Boundary Dataset (WBD) layers are only updated twice per year </SPAN></P><P><SPAN>from the USGS. Note: see the “LoadDate” field in the attribute tables for the vintage of the WBD data from Gateway.</SPAN></P><P><SPAN>If a more recent copy is required for your particular project, the USGS NHD website hosts data that is </SPAN></P><P><SPAN>updated at least once every quarter either via the National Map or pre-staged zipped files in various ways. </SPAN></P><P><SPAN>The USGS WBD data can be downloaded from the following link: http://nhd.usgs.gov/data.html. </SPAN></P><P><SPAN /></P><P><SPAN>****************************************************************************************************************************</SPAN></P><P><SPAN>The document "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" can be found at:</SPAN></P><P><SPAN>http://pubs.usgs.gov/tm/tm11a3/pdf/WBD-Ed3_052212.pdf</SPAN></P><P><SPAN /></P><P><SPAN>****************************************************************************************************************************</SPAN></P><P><SPAN>In addition to the Gateway application's WBD delivery mechanisms by County, State, or other Area of Interest, National seamless</SPAN></P><P><SPAN>layers of the WBD by Hydrologic Unit (HU) digit level may also be downloaded from the following USDA NRCS download site:</SPAN></P><P><SPAN>http://gws.ftw.nrcs.usda.gov/NGCE_Ref/WBD/.</SPAN></P><P><SPAN /></P><P><SPAN>****************************************************************************************************************************</SPAN></P><P><SPAN /></P><P><SPAN>The hydrologic unit data that you have downloaded from the USDA Geospatial Data Gateway is called the Watershed Boundary</SPAN></P><P><SPAN>Dataset (WBD). This dataset at 1:24,000 scale is a greatly expanded version of the hydrologic units created in the </SPAN></P><P><SPAN>mid-1970's by the U.S. Geological Survey under the sponsorship of the Water Resources Council. The WBD is a complete set of</SPAN></P><P><SPAN>hydrologic units from new watershed and subwatesheds less than 10,000 acres to entire river systems draining large hydrologic</SPAN></P><P><SPAN>unit regions, all attributed by a standard nomenclature.</SPAN></P><P><SPAN /></P><P><SPAN>Development of the Watershed Boundary Dataset started in the early 1990's and has progressed to the format and attribution</SPAN></P><P><SPAN>that is now being distributed. The delineation and attribution was done on a state basis using a variety of methods and </SPAN></P><P><SPAN>source data. Each state HU dataset has gone through an extensive quality review process to ensure accuracy and compliance</SPAN></P><P><SPAN>to the Federal Standard for Delineation of Hydrologic Unit Boundaries </SPAN></P><P><SPAN>(http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/water/watersheds/?cid=nrcs143_021630)</SPAN></P><P><SPAN>before and during submittal to USDA-NRCS National Geospatial Management Center (NGMC). </SPAN></P><P><SPAN /></P><P><SPAN>NRCS modified the WBD dataset with the intention of creating a seamless dataset for the entire country by all 6 levels.</SPAN></P><P><SPAN>The data is delivered by sub-basin and includes data for HUC-8, HUC-10, and HUC-12. The deliverable includes attributes for</SPAN></P><P><SPAN>hydrologic unit codes, hydrologic unit name, downstream hydrologic unit, man-made modifications to overland flow that alter</SPAN></P><P><SPAN>the location of the HU boundary, and HU type for each hydrologic unit level 1-6. An acres field already exists for each </SPAN></P><P><SPAN>subwatershed. The polygon ESRI shapefile has an accompanying line shapefile of the same boundaries with attribute fields </SPAN></P><P><SPAN>for HU level, linesource, and metadata ID. At this time, not all records have attributes for all the fields, but may be </SPAN></P><P><SPAN>filled in by the user for local projects or will be filled in at a later date. For a complete description of the attributes</SPAN></P><P><SPAN>and processes used to delineate hydrologic units to 1:24,000 scale accuracy, please refer to accompanying document titled</SPAN></P><P><SPAN>Watershed Boundary Dataset (WBD) User Guide (wbddoc_user_guide.doc). It should be noted that if a HUC code field </SPAN></P><P><SPAN>(ex. HUC_12) has "00" for the last two digits, this means that is has the same boundary as the level above it. This means</SPAN></P><P><SPAN>the level above the "00" HU was not subdivided any smaller. This may have occurred if the base data does not have enough</SPAN></P><P><SPAN>detail to acccuractly delineate the boundaries with confidence. When this happens the HUC has "00" added on the existing</SPAN></P><P><SPAN>code at the level above it and the boundaries remain the same. At a later date this HUC may be delineated when better </SPAN></P><P><SPAN>base data becomes available. </SPAN></P><P><SPAN /></P><P><SPAN>A generalized metadata file was created by the Geospatial Data Gateway for each downloaded dataset. Another accompanying</SPAN></P><P><SPAN>document titled wbd_state_metadata.html includes links for state specific HU metadata. The state metadata provides information</SPAN></P><P><SPAN>on how each state delineated their hydrologic units.</SPAN></P><P><SPAN /></P><P><SPAN>The definition for a hydrologic unit according to the FGDC Proposal, Version 1.0 - Federal Standards For Delineation of </SPAN></P><P><SPAN>Hydrologic Unit Boundaries 3/01/02 states “A hydrologic unit is a drainage area delineated to nest in a multi-level, </SPAN></P><P><SPAN>hierarchical drainage system. Its boundaries are defined by hydrographic and topographic criteria that delineate an </SPAN></P><P><SPAN>area of land upstream from a specific point on a river, stream or similar surface waters. A hydrologic unit can accept </SPAN></P><P><SPAN>surface water directly from upstream drainage areas, and indirectly from associated surface areas such as remnant, </SPAN></P><P><SPAN>non-contributing, and diversions to form a drainage area with single or multiple outlet points. Hydrologic units are </SPAN></P><P><SPAN>only synonymous with classic watersheds when their boundaries include all the source area contributing surface water to a </SPAN></P><P><SPAN>single defined outlet point. “ </SPAN></P><P><SPAN /></P><P><SPAN>The EPA hosts a website, http://cfpub.epa.gov/surf/locate/index.cfm, that supplies local citizen based groups that are </SPAN></P><P><SPAN>active in a subbasin (hu8 code) for your particular area of interest. </SPAN></P><P><SPAN /></P><P><SPAN>****************************************************************************************************************************</SPAN></P><P><SPAN>Currently, harmonization with Canada and Mexico is underway. Some hydrologic units at the sub-basin level may exist only at</SPAN></P><P><SPAN>the 8-digit level in Canada (missing 10- and 12-digit subdivisions), but this is only temporary until harmonization is </SPAN></P><P><SPAN>completed.</SPAN></P><P><SPAN /></P><P><SPAN /></P><P><SPAN>Identification_Information:</SPAN></P><P><SPAN>Citation:</SPAN></P><P><SPAN>Citation_Information:</SPAN></P><P><SPAN>Originator: USDA/NRCS - National Geospatial Center of Excellence</SPAN></P><P><SPAN>Title: 12 Digit Watershed Boundary Dataset in HUC8</SPAN></P><P><SPAN>Description:</SPAN></P><P><SPAN>Purpose: For a link to more detailed processing information on your state's watershed data, please refer to links within the file that was also sent with this dataset called "wbd_state_metadata.html." </SPAN></P><P><SPAN>This dataset is intended to be used as a tool for water-reso</SPAN></P><P><SPAN>Time_Period_of_Content:</SPAN></P><P><SPAN>Time_Period_Information:</SPAN></P><P><SPAN>Single_Date/Time:</SPAN></P><P><SPAN>Calendar_Date: 2013 - Present. See 'LoadDate' attribute field</SPAN></P><P><SPAN>Status:</SPAN></P><P><SPAN>Progress: In Work</SPAN></P><P><SPAN>Spatial_Domain:</SPAN></P><P><SPAN>Bounding_Coordinates:</SPAN></P><P><SPAN>West_Bounding_Coordinate: -95.76994</SPAN></P><P><SPAN>East_Bounding_Coordinate: -95.13878</SPAN></P><P><SPAN>North_Bounding_Coordinate: 46.10818</SPAN></P><P><SPAN>South_Bounding_Coordinate: 45.7587</SPAN></P><P><SPAN>Keywords:</SPAN></P><P><SPAN>Theme:</SPAN></P><P><SPAN>Theme_Keyword_Thesaurus: Standard for Geospatial Dataset File Naming</SPAN></P><P><SPAN>Theme_Keyword: Hydrologic Units, HUC, WBD</SPAN></P><P><SPAN>Place:</SPAN></P><P><SPAN>Place_Keyword_Thesaurus: GNIS</SPAN></P><P><SPAN>Place_Keyword: Minnesota</SPAN></P><P><SPAN>Place_Keyword: Douglas</SPAN></P><P><SPAN>Use_Constraints:</SPAN></P><P><SPAN /></P><P><SPAN>The U.S. Department of Agriculture, Service Center Agencies should be acknowledged as the data source in products derived from these data.</SPAN></P><P><SPAN /></P><P><SPAN>This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source. This information may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the Service Center Agencies any authority for the decisions that they make. The Service Center Agencies will not perform any evaluations of these data for purposes related solely to State or local regulatory programs.</SPAN></P><P><SPAN /></P><P><SPAN>Photographic or digital enlargement of these data to scales greater than at which they were originally mapped can cause misinterpretation of the data. Digital data files are periodically updated, and users are responsible for obtaining the latest version of the data.</SPAN></P><P><SPAN>Point_of_Contact:</SPAN></P><P><SPAN>Contact_Information:</SPAN></P><P><SPAN>Contact_Organization_Primary:</SPAN></P><P><SPAN>Contact_Organization: National Geospatial Center of Excellence</SPAN></P><P><SPAN>Contact_Address:</SPAN></P><P><SPAN>Address: 501 W. Felix St, Bldg 23</SPAN></P><P><SPAN>City: Fort Worth</SPAN></P><P><SPAN>State_or_Province: Texas</SPAN></P><P><SPAN>Postal_Code: 76115</SPAN></P><P><SPAN>Data_Quality_Information:</SPAN></P><P><SPAN>Lineage:</SPAN></P><P><SPAN>Source_Information:</SPAN></P><P><SPAN>Source_Citation:</SPAN></P><P><SPAN>Citation_Information:</SPAN></P><P><SPAN>Originator:</SPAN></P><P><SPAN>NRCS State Offices and USGS</SPAN></P><P><SPAN>Publication_Date: 2013 - Present</SPAN></P><P><SPAN>Title: Watershed Boundary Data - Hydrologic Unit</SPAN></P><P><SPAN>Source_Scale_Denominator: 24,000</SPAN></P><P><SPAN>Process_Step:</SPAN></P><P><SPAN>Process_Description: The dataset from the USGS was loaded into SDE.</SPAN></P><P><SPAN>For a complete description of the attributes and processes used to delineate hydrologic units to 1:24,000 scale accuracy, please refer to document Watershed Boundary Dataset (WBD) User Guide included with each WBD order.</SPAN></P><P><SPAN>Archives of HUC 2-12 as national layers can be downloaded </SPAN></P><P><SPAN>from ftp://ftp.ftw.nrcs.usda.gov/wbd/</SPAN></P><P><SPAN>Process_Date: 201603</SPAN></P><P><SPAN>Spatial_Reference_Information:</SPAN></P><P><SPAN>Horizontal_Coordinate_System_Definition:</SPAN></P><P><SPAN>Planar:</SPAN></P><P><SPAN>Grid_Coordinate_System:</SPAN></P><P><SPAN>Grid_Coordinate_System_Name: Universal Transverse Mercator</SPAN></P><P><SPAN>Universal_Transverse_Mercator:</SPAN></P><P><SPAN>UTM_Zone_Number: 15</SPAN></P><P><SPAN>Transverse_Mercator:</SPAN></P><P><SPAN>Scale_Factor_at_Central_Meridian: 0.9996</SPAN></P><P><SPAN>Longitude_of_Central_Meridian: -93</SPAN></P><P><SPAN>Latitude_of_Projection_Origin: 0.0</SPAN></P><P><SPAN>False_Easting: 500000.0</SPAN></P><P><SPAN>False_Northing: 0.0</SPAN></P><P><SPAN>Geodetic_Model:</SPAN></P><P><SPAN>Horizontal_Datum_Name: North American Datum of 1983 (NAD83)</SPAN></P><P><SPAN>Ellipsoid_Name: GRS1980</SPAN></P><P><SPAN>Semi-major_Axis: 6378137.0</SPAN></P><P><SPAN>Denominator_of_Flattening_Ratio: 298.257222101</SPAN></P><P><SPAN>Entity_and_Attribute_Information:</SPAN></P><P><SPAN>Overview_Description:</SPAN></P><P><SPAN>Entity_and_Attribute_Overview:</SPAN></P><P><SPAN>Hydrologic Unit delineation are closed polygons that encompass all area draining toward the lowest point (called outlet or pour point) in the polygon. Because of nominal sizes for the different hydrologic unit level: Watershed (40,000 to 250,000 acres) an</SPAN></P><P><SPAN>Entity_and_Attribute_Detail_Citation: See http://nhd.usgs.gov/userguide.html?url=NHD_User_Guide/Feature_Catalog/NHD_Feature_Catalog.htm for a data dictionary.</SPAN></P><P><SPAN>Distribution_Information:</SPAN></P><P><SPAN>Distribution_Liability:</SPAN></P><P><SPAN /></P><P><SPAN>Although these data have been processed successfully on a computer system at the U.S. Department of Agriculture, no warranty expressed or implied is made by the Service Center Agencies regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. The U.S. Department of Agriculture will warrant the delivery of this product in computer readable format, and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer input peripherals, or when the physical medium is delivered in damaged condition. Request for adjustment of credit must be made within 90 days from the date of this shipment from the ordering site.</SPAN></P><P><SPAN /></P><P><SPAN>Neither the U.S. Department of Agriculture, nor any of its agencies are liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets. The U.S. Department of Agriculture prohibits discrimination in all its programs and activities on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.)</SPAN></P><P><SPAN>Standard_Order_Process:</SPAN></P><P><SPAN>Digital_Form:</SPAN></P><P><SPAN>Digital_Transfer_Information:</SPAN></P><P><SPAN>Format_Name: ARC/INFO Shape</SPAN></P><P><SPAN>Metadata_Reference_Information:</SPAN></P><P><SPAN>Metadata_Date: 04/19/2016</SPAN></P><P><SPAN>Metadata_Standard_Name: SCI Minimum Compliance Metadata</SPAN></P><P><SPAN>Metadata_Standard_Version: SCI Std 003-02</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>

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