Jeff Falke Josh Paul 20240709 vector digital data https://doi.org/10.5066/P95AV4JO These collections of NetMap stream reaches, confluence-to-confluence streamlines, reach contributing areas, and reach contributing area valley bottoms within the YK basin are organized by major river region, and by HUC8 hydrologic units within those river regions. These files form the basis of the main data release items covering the entire YK basin, and were included as a separate zip files here for users with a specific area of interest who do not wish to download the entire YK dataset. Attribute fields are identical to the YK dataset, and include uRCA fields for all HUC8-level features. The field representing the uRCA ID in the shapefile facilitates join operations between tables of various stream attribute data and habitat potential model results. These attributes can be used for further analysis and/or visualization in a GIS. Users who download spatial data for an individual region should therefore also download the tabular data for the full YK dataset to join model results. For detailed metadata for the files in each major river region zip, please reference metadata for analogous data items in the full YK dataset. Attributes, processing steps, and and other information will be identical, since the full YK dataset is simply the combination of all the individual files found in the major river region zips. This shapefile was created to support the US Fish and Wildlife Service (USFWS) Research Work Order (RWO) 230: "Freshwater Habitat Potential for Chinook Salmon in the Yukon and Kuskokwim River Basins, Alaska" 20230501 See Supplemental Info Complete None planned -165.0567 -137.0593 68.5485 58.4106 ISO 19115 Topic Category environment biota boundaries inlandWaters None synthetic stream network reach contributing area USGS Metadata Identifier USGS:66508f5ad34e702fe874881a None Alaska Interior Alaska Yukon River Kuskokwim River None. Please see 'Distribution Info' for details. None. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. Jeff Falke Alaska Cooperative Fish and Wildlife Research Unit mailing and physical

P.O. Box 757020

Fairbanks Alaska 99709 USA (907)474-6044 jfalke@usgs.gov University of Alaska Fairbanks; Alaska Department of Fish and Game; US Fish and Wildlife Service; US Geological Survey ESRI ArcGIS Pro 2.7.0, Python 3.x Refer to the metadata for the full YK basin dataset for accuracy remarks. Refer to the metadata for the full YK basin dataset for consistency remarks. Refer to the metadata for the full YK basin dataset for completeness remarks. Refer to the metadata for the full YK basin dataset for processing steps. NetMap synthetic streamlines (files with the "5km_Netmap_reaches" suffix) are detailed vector streamlines derived from high-resolution elevation data. These streamlines were pruned to include only those streams with a drainage area of 5 square kilometers or greater. Some files in this regional dataset are clipped to subbasin extent (Hydrologic Unit Code 8 or "HUC8" level). 8-digit numerical IDs in filenames denote that the data has been clipped to the subbasin-level. Files lacking an 8-digit numerical ID in the filename are not clipped and cover the the full regional extent. 20230501 Vector G-polygon 59385 Albers Conical Equal Area 55.0 65.0 -154.0 50.0 0.0 0.0 coordinate pair 0.6096 0.6096 meters North_American_Datum_1983 GRS 1980 6378137.0 298.257222101 DataDictionary_RegionalFilesInZippedFolders.xlsx (Sheet1) Excel Worksheet Producer Defined File Name Name of the shapefiles in all the zipped folders Producer Defined Name of the shapefiles in all the zipped folders Type Type of file. Producer Defined << empty cell >> NA Producer defined Shapefile The type of file. Producer defined Description Description of what the shapefile contains. Producer Defined << empty cell >> NA Producer defined 1-2 sentence description of shapefile. Description of what the shapefile contains. Producer defined GS ScienceBase U.S. Geological Survey mailing address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P95AV4JO None 20240709 Josh Paul Alaska Cooperative Fish and Wildlife Research Unit mailing and physical

216 Irving 1 Building

Fairbanks Alaska 99709 (907)474-6044 jdpaul3@alaska.edu FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998