Scott W. Anderson 20260219 publication https://doi.org/10.5066/P149MBYG Over the second half of the 20th century, the U.S. Geological Survey collected aerial imagery over many glaciers in western North America. Those images were later scanned and archived as digital images (Nolan and others, 2017; https://doi.org/10.18739/A2VH5CJ8K). Imagery over Mount Rainier often extended down-valley enough to capture the majority of the proglacial watershed below a given glacier. Imagery from 1991 and 1992 was used to derived digital elevation models (DEMs) of all the major glacial headwater basins in the Puyallup River watershed using structure-from-motion (SfM) photogrammetry (Fonstad and others, 2013). The resulting elevation datasets were further used to assess geomorphic change in those headwaters. Processing methods follow exactly from Anderson and Shean (2021; https://doi.org/10.1002/esp.5274). DEM-specific details are provided in metadata and in an auto-generated report from the processing software (Agisoft Metashape), both of which are packaged in a zip folder along with the DEM itself. These data were created to assess channel change in the Puyallup River watershed. 19910901 19921006 ground condition Complete None planned -121.8672 -121.7460 47.0017 46.8151 ISO 19115 Topic Category elevation USGS Thesaurus digital elevation models USGS Metadata Identifier USGS:661edf28d34e7eb9eb7e3f5d None Puyallup River Pierce County Common geographic areas Puget Sound 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. Scott W. Anderson U.S. Geological Survey, NW-PACIFIC ISLAND REG Hydrologist mailing address

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Tacoma WA 98402 US 253-552-1633 253-552-1580 swanderson@usgs.gov Raw image scans were fiducially aligned using OpenCV (CV2) template matching processes in Python 3. Photogrammetric processing done using Agisoft Metashape, version 1.7.0 on a Windows 10 machine. Nolan, Dr. Matt Austin S. Post William Hauer Alexander Zinck Shad O'Neel 2017 publication n/a NSF Arctic Data Center https://doi.org/10.18739/a2vh5cj8k Scott W. Anderson David Shean 20211123 publication Earth Surface Processes and Landforms vol. 47, issue 2 n/a Wiley ppg. 596-617 https://doi.org/10.1002/esp.5274 Mark A. Fonstad James T. Dietrich Brittany C. Courville Jennifer L. Jensen Patrice E. Carbonneau 20130125 publication Earth Surface Processes and Landforms vol. 38, issue 4 n/a Wiley ppg. 421-430 https://doi.org/10.1002/esp.3366 See file-specific metadata See file-specific metadata See file-specific metadata See file-specific metadata See file-specific metadata See file-specific metadata or Anderson and Shean (2021) for processing details 20240416 Scott W. Anderson U.S. Geological Survey, NW-PACIFIC ISLAND REG Hydrologist mailing address

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Tacoma WA 98402 US 253-552-1633 253-552-1580 swanderson@usgs.gov Universal Transverse Mercator 10 0.9996 -123.0 0.0 500000.0 0.0 row and column 1.0 1.0 meters North_American_Datum_1983 GRS 1980 6378137.0 298.257222101004 North American Vertical Datum of 1988 0.01 meters Explicit elevation coordinate included with horizontal coordinates 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/P149MBYG None 20260219 Scott W. Anderson U.S. Geological Survey, NW-PACIFIC ISLAND REG Hydrologist mailing address

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Tacoma WA 98402 US 253-552-1633 253-552-1580 swanderson@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998