Carey, Michael P. (ORCID: 0000-0002-3327-8995) Zimmerman, Christian E. (ORCID: 0000-0002-3646-0688) 20170505 tabular digital data Anchorage, Alaska U.S. Geological Survey, Alaska Science Center Suggested Citation: Carey, M.P., Zimmerman, C.E., 2017, Count of sockeye salmon (Oncorhynchus nerka), river temperature, and river height in the Pilgrim River, Nome, Alaska, 2003-2014: U.S. Geological Survey data release, https://doi.org/10.5066/F71834PF https://doi.org/10.5066/F71834PF The dataset is the daily count of Sockeye Salmon (Oncorhynchus nerka) passing through a fish counting weir on the Pilgrim River from 2003 to 2014. Also, included in the data set is the daily temperature and river height measured at the weir (65.103071°, -164.824046°).The fish weir was operated during the summer (late June to mid-September) by the Norton Sound Economic Development Corporation. To explore if changing river conditions have altered the migrating cues of Sockeye Salmon (Oncorhynchus nerka) near the northern limits of their range. Sockeye Salmon count data is alternatively available on the website of the Alaska Department of Fish and Wildlife from 2003 to 2011 (https://www.adfg.alaska.gov/sf/FishCounts/). 2003 2014 observed Complete None planned Pilgrim River, Seward Peninsula -166.36871337602 -164.5065307589 65.329995293419 64.874420154568 USGS Metadata Identifier USGS:ASC111 ISO 19115 Topic Category Biota Environment NASA GCMD Earth Science Keyword Thesaurus Animals/Vertebrates Fish Ray-Finned Fishes Salmons/Trouts Water Temperature Surface Water Stage Height Hydrosphere USGS CSA Biocomplexity Thesaurus Anadromous migrations Salmon River Water Stream flow USGS Thesaurus Water temperature Inland fishery resources Aquatic biology USGS Geographic Names Information System (GNIS) Alaska Seward Peninsula Pilgrim River Nome None Fishes ITIS Integrated Taxonomic Information System Unknown online database online ITIS-North America Taxonomic details retrieved April 7, 2025, from the Integrated Taxonomic Information System online database https://www.itis.gov https://doi.org/10.5066/F7KH0KBK Species were identified by skilled observers in the field based on general appearance. Kingdom Animalia Subkingdom Bilateria Infrakingdom Deuterostomia Phylum Chordata Subphylum Vertebrata Infraphylum Gnathostomata Superclass Osteichthyes Class Actinopterygii Subclass Neopterygii Infraclass Teleostei Superorder Protacanthopterygii Order Salmoniformes Family Salmonidae Subfamily Salmoninae Genus Oncorhynchus Species Oncorhynchus nerka sockeye salmon red salmon TSN: 161979 No access constraints. No use constraints. These data are marked with a Creative Common CC0 1.0 Universal License and are in the public domain. It is requested that this USGS data release be cited for any subsequent publications that reference or utilize these data. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov Alaska Department of Fish and Game and Norton Sound Fisheries Research and Development, Nome, AK for data collection. Carey, M.P. Zimmerman, C.E. Keith, K.D. Schelske, M. Lean, C. Douglas, D.C. 2017 journal article Transactions of the American Fisheries Society 146(4):791–802 online Taylor and Francis Carey, M.P., Zimmerman, C.E., Keith, K.D., Schelske, M., Lean, C., Douglas, D.C., 2017. Migration trends of sockeye salmon at the northern edge of their distribution. Transactions of the American Fisheries Society 146(4):791–802. https://doi.org/10.1080/00028487.2017.1302992 https://doi.org/10.1080/00028487.2017.1302992 No formal attribute accuracy tests were conducted Attribute values fall within expected ranges. A blank cell signifies that no data was collected on that date. METHODS - FIELD: Daily counts of Sockeye Salmon were collected at a fish weir from 2003 until 2014. The fish weir was located midway between the mouth of the river (65.103071°, -164.824046°) and the spawning grounds and was operated during the summer by the Norton Sound Economic Development Corporation with assistance from the Alaska Department of Fish and Game. The weir trap was monitored 24 hours a day and checked hourly. River temperature and river height were measured in situ in June through September from 2003 to 2014 at the weir site with a handheld thermometer and stream gauge plate. Unknown sockeyeSalmon_countRiverConditions_PilgrimRvr_2003-2014_carey.csv Table with daily fish counts of Sockeye Salomon, daily water temperature of the Pilgrim River, and daily stream height of the Pilgrim River. Presented in a Comma Separated Value (CSV) formatted table. Author defined Date Date (MM/DD/YY) when individual fish were collected, water temperature measured, and stream height measured in the Pilgrim River. Author defined 6/24/2003 8/26/2014 Date (MM/DD/YYYY) SockeyeCount The number of Sockeye Salmon (Oncorhynchus nerka) counted passing through the Pilgrim River weir on a given day. A zero indicates that no Sockeye Salmon passed through the weir on the given day. Author defined 0 6560 Count RiverTemperature The daily water temperature of the Pilgrim River measured at the fish counting weir. River temperature was measured in the morning (8:00) and evening (20:00) and then averaged to represent the daily value. A handheld thermometer was used with a 0.1 degree C precision. A blank cell indicates that no measurement was recorded on the given day. Author defined 4.5 16.75 Degrees Celsius RiverHeight The daily stream height in meters (m) of the Pilgrim River measured at the fish counting weir. The precision of the gauge is 0.1 m. A blank cell indicates that no measurement was recorded on the given day. Author defined 0.14 3.975 Meters U.S. Geological Survey USGS ScienceBase Team Mailing and Physical

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Denver Colorado 80225 USA 1-888-275-8747 sciencebase@usgs.gov The U.S. Geological Survey, Alaska Science Center is the authoritative source of these data, distributed by ScienceBase (a USGS Trusted Digital Repository). 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, no warranty expressed or implied is made regarding the display or utility of the data for other purposes or on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. CSV Tabular data in CSV format; FGDC metadata in XML and HTML formats. https://doi.org/10.5066/F71834PF None 20250407 U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata (CSDGM) FGDC-STD-001.1-1999