20260103 10472700 1.0 FALSE 002 NHDFlowline_Alaska Projected GCS_North_American_1983 Linear Unit: Meter (1.000000) NAD_1983_Alaska_Albers <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.5.0'><WKT>PROJCS[&quot;NAD_1983_Alaska_Albers&quot;,GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Albers&quot;],PARAMETER[&quot;False_Easting&quot;,0.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-154.0],PARAMETER[&quot;Standard_Parallel_1&quot;,55.0],PARAMETER[&quot;Standard_Parallel_2&quot;,65.0],PARAMETER[&quot;Latitude_Of_Origin&quot;,50.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,3338]]</WKT><XOrigin>-13752200</XOrigin><YOrigin>-8948200</YOrigin><XYScale>10000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102006</WKID><LatestWKID>3338</LatestWKID></ProjectedCoordinateSystem> 20260103 11441200 20260103 11450400 150000000 5000 ISO19115_3 dataset U.S. Geological Survey, National Geospatial Technical Operations Center 1-888-ASK-USGS (1-888-275-8747) Box 25046 Denver Federal Center Lakewood CO 80225 US http://www.usgs.gov/ask/ Monday through Friday 8:00 AM to 4:00 PM Metadata information can also be obtained through online services using The National Map Viewer, at http://nationalmap.usgs.gov or EarthExplorer, at http://earthexplorer.usgs.gov or Ask USGS at http://www.usgs.gov/ask. 20260103 000000 ArcGIS Metadata 1.0 Feature Class USA NHDFlowline_Alaska 2026-01-03T13:59:23 U.S. Geological Survey <DIV STYLE="text-align:Left;"><DIV><P><SPAN>The USGS National Hydrography Dataset (NHD) Downloadable Data Collection from The National Map (TNM) is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and transported material flow allows users to trace movement in upstream and downstream directions. In addition to this geographic information, the dataset contains metadata that supports the exchange of future updates and improvements to the data. The NHD supports many applications, such as making maps, geocoding observations, flow modeling, data maintenance, and stewardship. For additional information on NHD, go to http://nhd.usgs.gov/.</SPAN></P></DIV></DIV> Alaska NHD Flowline data only. Important: This data is not wall to wall regional NHD data. It has been selected based on a regional AOI where WBD HUC 8 touches National Forest Lands. NHDFlowlines consist of routes that make up a linear surface water drainage network. Flowlines have a reach code and a measure, allowing for the establishment of upstream/downstream relationships. This network allows for powerful analysis and modeling capabilities. Each Feature type is attributed with descriptive information by an Fcode. The NHD provides a true network that supports the analysis of any type of movement (for example, navigation, sediment transport, and effluent dispersion) by surface waters. Further information and data download are available at http://nhd.usgs.gov/ USGS - National Geospatial Technical Operations Center (NGTOC) U.S. Geological Survey, National Geospatial Technical Operations Center 1 888 ASK USGS 1400 Independence Road Rolla MO 65401 US nhd@usgs.gov Monday through Friday 8:00 AM to 4:00 PM Metadata information can also be obtained through online services using The National Map Viewer, at http://nationalmap.usgs.gov or EarthExplorer, at http://earthexplorer.usgs.gov or Ask USGS at http://www.usgs.gov/ask. Reservoir Spring / Seep Stream / Water Reach Code Swamp / Marsh Lake / Pond Hydrography Canal / Ditch Artificial Path FWHydrography Reservoir Spring / Seep Stream / Water Reach Code Swamp / Marsh Lake / Pond Hydrography Canal / Ditch Artificial Path FWHydrography <DIV STYLE="text-align:Left;"><DIV><P><SPAN>None. However, users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Acknowledgment of the U.S. Geological Survey would be appreciated for products derived from these data</SPAN></P></DIV></DIV> true -118.425804 -96.622605 43.556127 49.132419 Temporal Extents 2001-01-01 2016-04-26 true -118.425804 -96.622605 43.556127 49.132419 Esri ArcGIS 10.3.1.4959 This data comprises hydrological data, including flow lines, water bodies and water features Points, nodes, lines, and areas conform to topological rules. Lines intersect only at nodes, and all nodes anchor the ends of lines. Lines do not overshoot or undershoot other lines where they are supposed to meet. There are no duplicate lines. Lines bound areas and lines identify the areas to the left and right of the lines. Gaps and overlaps among areas do not exist. All areas close. The completeness of the data reflects the content of the sources, which most often are the published USGS topographic quadrangle and/or the USDA Forest Service Primary Base Series (PBS) map. The USGS topographic quadrangle is usually supplemented by Digital Orthophoto Quadrangles (DOQs). Features found on the ground may have been eliminated or generalized on the source map because of scale and legibility constraints. In general, streams longer than one mile (approximately 1.6 kilometers) were collected. Most streams that flow from a lake were collected regardless of their length. Only definite channels were collected so not all swamp/marsh features have stream/rivers delineated through them. Lake/ponds having an area greater than 6 acres were collected. Note, however, that these general rules were applied unevenly among maps during compilation. Reaches codes are defined on all features of type stream/river, canal/ditch, artificial path, coastline, and connector. Waterbody reach codes are defined on all lake/pond and most reservoir features. Names were applied from the GNIS database. Detailed capture conditions are provided for every feature type in the Standards for National Hydrography Dataset available online through http://mapping.usgs.gov/standards/. This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table. Download from ftp ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Hydrography/NHD/National/HighResolution/GDB/ ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Hydrography/NHD/National/HighResolution/GDB/ Dataset Copied 2026-01-03 0 EPSG 6.5(3.0.1) Simple FALSE 0 TRUE TRUE NHDFlowline_Alaska Feature Class 0 objectid OBJECTID OID 4 10 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. globalid GlobalID GlobalID 38 0 0 permanent_identifier PERMANENT_IDENTIFIER String 40 0 0 fdate FDATE Date 8 0 0 resolution Resolution Integer 4 10 0 gnis_id GNIS_ID String 10 0 0 gnis_name GNIS_NAME String 65 0 0 lengthkm LENGTHKM Double 8 38 8 reachcode REACHCODE String 14 0 0 flowdir FlowDir Integer 4 10 0 wbarea_permanent_identifier WBAREA_PERMANENT_IDENTIFIER String 40 0 0 ftype FType Integer 4 10 0 fcode FCode Integer 4 10 0 innetwork InNetwork Integer 4 10 0 mainpath MainPath Integer 4 10 0 visibilityfilter VisibilityFilter Integer 4 10 0 enabled ENABLED SmallInteger 2 5 0 region REGIION String 3 0 0 USFS Region Code US Forest Service shape SHAPE Geometry 8 0 0 Feature geometry. Esri Coordinates defining the features. st_length(shape) st_length(shape) Double 0 0 0 Coastline 566 resolution Resolution Coded Value Default value Duplicate s_usa Integer flowdir 0 HydroFlowDirections Coded Value Default value Duplicate s_usa Integer fcode 56600 Coastline FCode Coded Value Default value Duplicate s_usa Integer innetwork 1 NoYes Domain Coded Value Default value Duplicate s_usa Integer mainpath 0 MainPath Domain Coded Value Default value Duplicate s_usa Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate s_usa Integer enabled 1 EnabledDomain Coded Value Default value Default value s_usa SmallInteger Connector 334 resolution Resolution Coded Value Default value Duplicate s_usa Integer flowdir 0 HydroFlowDirections Coded Value Default value Duplicate s_usa Integer fcode 33400 Connector FCode Coded Value Default value Duplicate s_usa Integer innetwork 1 NoYes Domain Coded Value Default value Duplicate s_usa Integer mainpath 0 MainPath Domain Coded Value Default value Duplicate s_usa Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate s_usa Integer enabled 1 EnabledDomain Coded Value Default value Default value s_usa SmallInteger CanalDitch 336 resolution Resolution Coded Value Default value Duplicate s_usa Integer flowdir 0 HydroFlowDirections Coded Value Default value Duplicate s_usa Integer fcode 33600 CanalDitch FCode Coded Value Default value Duplicate s_usa Integer innetwork 1 NoYes Domain Coded Value Default value Duplicate s_usa Integer mainpath 0 MainPath Domain Coded Value Default value Duplicate s_usa Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate s_usa Integer enabled 1 EnabledDomain Coded Value Default value Default value s_usa SmallInteger ArtificialPath 558 resolution Resolution Coded Value Default value Duplicate s_usa Integer flowdir 0 HydroFlowDirections Coded Value Default value Duplicate s_usa Integer fcode 55800 ArtificialPath FCode Coded Value Default value Duplicate s_usa Integer innetwork 1 NoYes Domain Coded Value Default value Duplicate s_usa Integer mainpath 0 MainPath Domain Coded Value Default value Duplicate s_usa Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate s_usa Integer enabled 1 EnabledDomain Coded Value Default value Default value s_usa SmallInteger Pipeline 428 resolution Resolution Coded Value Default value Duplicate s_usa Integer flowdir 0 HydroFlowDirections Coded Value Default value Duplicate s_usa Integer fcode 42805 Pipeline FCode Coded Value Default value Duplicate s_usa Integer innetwork 1 NoYes Domain Coded Value Default value Duplicate s_usa Integer mainpath 0 MainPath Domain Coded Value Default value Duplicate s_usa Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate s_usa Integer enabled 1 EnabledDomain Coded Value Default value Default value s_usa SmallInteger StreamRiver 460 resolution Resolution Coded Value Default value Duplicate s_usa Integer flowdir 0 HydroFlowDirections Coded Value Default value Duplicate s_usa Integer fcode 46006 StreamRiver FCode Coded Value Default value Duplicate s_usa Integer innetwork 1 NoYes Domain Coded Value Default value Duplicate s_usa Integer mainpath 0 MainPath Domain Coded Value Default value Duplicate s_usa Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate s_usa Integer enabled 1 EnabledDomain Coded Value Default value Default value s_usa SmallInteger Underground Conduit 420 resolution Resolution Coded Value Default value Duplicate s_usa Integer flowdir 0 HydroFlowDirections Coded Value Default value Duplicate s_usa Integer fcode 42000 Underground Conduit FCode Coded Value Default value Duplicate s_usa Integer innetwork 1 NoYes Domain Coded Value Default value Duplicate s_usa Integer mainpath 0 MainPath Domain Coded Value Default value Duplicate s_usa Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate s_usa Integer enabled 1 EnabledDomain Coded Value Default value Default value s_usa SmallInteger Drainageway 468 resolution Resolution Coded Value Default value Duplicate s_usa Integer flowdir 0 HydroFlowDirections Coded Value Default value Duplicate s_usa Integer fcode 46800 Drainageway Coded Value Default value Duplicate s_usa Integer innetwork 1 NoYes Domain Coded Value Default value Duplicate s_usa Integer mainpath 0 MainPath Domain Coded Value Default value Duplicate s_usa Integer visibilityfilter 0 VisibilityFilter Domain Coded Value Default value Duplicate s_usa Integer enabled 1 EnabledDomain Coded Value Default value Default value s_usa SmallInteger