This MCNEALLY_readme20250528.txt file was generated on 20250528 by Kaylee Alexander ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset Shapefiles for Escalante River Channel Delineation, 1974–2022 2. Author Information Principal Investigator Contact Information Name: Phoebe McNeally Institution: School of Environment Society and Sustainability, Uiversity of Utah Address: 260 S Central Campus Drive, Room 4625 Salt Lake City, UT 84112 Email: phoebe.mcneally@utah.edu ORCID: 0000-0001-6439-3091 Associate or Co-investigator Contact Information Name: Michael L. Scott Institution: Escalante River Watershed Partnership Email: scottmikeski@gmail.com ORCID: 0000-0003-2254-1601 Associate or Co-investigator Contact Information Name: Erin J. Williams Institution: School of Environment Society and Sustainability, Uiversity of Utah Address: 260 S Central Campus Drive, Room 4625 Salt Lake City, UT 84112 ORCID: 0009-0005-3170-2085 Associate or Co-investigator Contact Information Name: Jonathan M. Friedman Institution: U.S. Geological Survey Email: friedmanj@usgs.gov ORCID: 0000-0002-1329-0663 Associate or Co-investigator Contact Information Name: John R. Spence Institution: California Academy of Sciences, Department of Botany Email: Bryum500.JS@gmail.com ORCID: 0000-0002-6360-5512 3. Date of data collection (single date, range, approximate date) 2022 to 2023 (collected); 1974, 1981, 1995, 2000, 2007 to 2017, 2018 to 2022 (sources) 4. Geographic location of data collection (where was data collected?): Escalante River, Utah 5. Information about funding sources that supported the collection of the data: NA -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: CC BY NC - Allows others to use and share your data non-commercially and with attribution. 2. Links to publications that cite or use the data: - https://onlinelibrary.wiley.com/journal/10969837 - "Long-term geomorphic response of a southwestern USA river following establishment and removal of an invasive riparian tree" has been accepted and is awaiting publication. 3. Links to other publicly accessible locations of the data: NA 4. Links/relationships to ancillary data sets: NA 5. Was data derived from another source? Yes -United States Geological Survey -Bureau of Land Management -EarthExplorer (https://earthexplorer.usgs.gov/#close) -USDA Geospatial Data Gateway (https://datagateway.nrcs.usda.gov/GDGHome_DirectDownLoad.aspx) -World Imagery Wayback (https://livingatlas.arcgis.com/wayback/#active=16681&mapCenter=-111.19835%2C37.64870%2C18) 6. Recommended citation for the data: McNeally, Phoebe, Michael L. Scott, Erin J. Williams, Jonathan M. Friedman, and John R. Spence. 2025. "Shapefiles for Escalante River Channel Delineation, 1974–2022." The Hive: University of Utah Research Data Repository. https://doi.org/10.7278/S5d-hyk0-w2kf --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: 05272025_Escalante_ChannelDelineations_McNeally.zip Short description: This file contains individual zipped shapefiles for the 7 reaches where the changing channel was delineated over time. The file contains 31 sub zipped folders. Each of the sub folders contain 8 files that comprise a single shapefile. Collectively the 8 files are called a shapefile and each shapefile represents a mapped channel delineation. The title of the shapefile provides the reach and data year of the channel delineation. 2. Relationship between files: 3. Additional related data collected that was not included in the current data package: US Geological Survey (USGS) gage data, Escalante River Watershed Partnership invasive treatment data. 4. Are there multiple versions of the dataset? No -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data:  Historic imagery was collected from United States Geological Survey and Bureau of Land Management; sourced imagery was accessed through EarthExplorer (https://earthexplorer.usgs.gov/#close); NAIP imagery from the USDA Geospatial Data Gateway (https://datagateway.nrcs.usda.gov/GDGHome_DirectDownLoad.aspx); and ESRI imagery from World Imagery Wayback (https://livingatlas.arcgis.com/wayback/#active=16681&mapCenter=-111.19835%2C37.64870%2C18) 2. Methods for processing the data: All imagery was imported into ArcGIS Pro, version 3.3.1, where resolution ranged from 0.3 to 1 m for all imagery subsequent to 1981. Resolution for earlier imagery was estimated to be ≤5 m. ESRI and NAIP images were already georeferenced. We georeferenced the remaining images using an average of 20 hard and soft control points and a second-order polynomial correction model. The root-mean-square error for all georeferenced images was ≤ 2.5 m. For each image date we calculated the reach-averaged width of the active channel by digitizing the boundary of the active channel and dividing the area of the channel polygon by the length of the channel centerline. Channel boundaries were delineated using heads up digitizing for each study segment for each image year. 3. Instrument- or software-specific information needed to interpret the data: Esri's ArcGIS Pro version 3.3.1 GIS software (e.g., Esri ArcGIS, QGIS, GlobalMapper or other software that can open shapefiles). 4. Standards and calibration information, if appropriate: NA 5. Environmental/experimental conditions: NA 6. Describe any quality-assurance procedures performed on the data: The quality of the georeferencing of the images was determined by the root-mean-square error. For all images the RMSE was less than or equal to 2.5 m. We quantified error or uncertainty associated with our measurements of active channel width by calculating image co-registration error, the major source of error in evaluating channel change using aerial imagery (Leonard et al. 2020). We accomplished this for each of our image sets by extracting the map coordinates of 10-20 of the same floodplain features in our digitized images, and the most current ESRI World Imagery (10/13/2023) and calculating the mean of the Euclidian distance between the coordinates for each of the floodplain features across our study sites (Leonard et al., 2020; Dean and Topping, 2024). These features were generally different than those used to rectify the images. Image co-registration error ranged from 2.73 m in the 2006 imagery to 0.74 m in the 2021 and 2022 imagery. 7. People involved with sample collection, processing, analysis and/or submission: NA ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 05272025_Escalante_ChannelDelineations_McNeally.zip ----------------------------------------- 1. Number of sub files: 31 zip files each containing the 8 files that comprise the Esri Shapefile format (*.shp, *.sbn, *.shx, prj,*.dbf,*,cpg, *.sbx, *.xml) 2. Sub File List A. Name: 1974Reach2Bshort.zip Description: shapefile for mapped channel delineation reach 2Bshort in 1974. B. Name: Name: 1981Reach1.zip Description: shapefile for mapped channel delineation reach 1 in 1981. C. Name: 1981Reach2A.zip         Description: shapefile for mapped channel delineation reach 2A in 1981.     D. Name: 1981Reach2B.zip         Description: shapefile for mapped channel delineation reach 2B in 1981.     E. Name: 1981Reach2Bshort.zip         Description: shapefile for mapped channel delineation reach 2Bshort in 1981.     F. Name: 1981Reach3A.zip         Description: shapefile for mapped channel delineation reach 3A in 1981.     G. Name: 1981Reach3B.zip         Description: shapefile for mapped channel delineation reach 3B in 1981.     H. Name: 1981Reach4A.zip         Description: shapefile for mapped channel delineation reach 4A in 1981.     I. Name: 1981Reach4B.zip         Description: shapefile for mapped channel delineation reach 4B in 1981.     J. Name: 1995Reach2Bshort.zip         Description: shapefile for mapped channel delineation reach 2Bshort in 1995.     K. Name: 1995Reach3B.zip         Description: shapefile for mapped channel delineation reach 3B in 1995.     L. Name: 2000Reach2Bshort.zip         Description: shapefile for mapped channel delineation reach 2Bshort in 2000.     M. Name: 2006Reach4B.zip         Description: shapefile for mapped channel delineation reach 4B in 2006.     N. Name: 2009Reach2A.zip         Description: shapefile for mapped channel delineation reach 2A in 2009.     O. Name: 2009Reach4A.zip         Description: shapefile for mapped channel delineation reach 4A in 2009.     P. Name: 2014Reach1.zip         Description: shapefile for mapped channel delineation reach 1 in 2014.     Q. Name: 2014Reach2A.zip         Description: shapefile for mapped channel delineation reach 2A in 2014.     R. Name: 2014Reach2B.zip         Description: shapefile for mapped channel delineation reach 2B in 2014.     S. Name: 2014Reach2Bshort.zip         Description: shapefile for mapped channel delineation reach 2Bshort in 2014.     T. Name: 2014Reach3B.zip         Description: shapefile for mapped channel delineation reach 3B in 2014.     U. Name: 2015Reach4A.zip         Description: shapefile for mapped channel delineation reach 4A in 2015.     V. Name: 2015Reach4B.zip         Description: shapefile for mapped channel delineation reach 4B in 2015.     W. Name: 2016Reach3A.zip         Description: shapefile for mapped channel delineation reach 3A in 2016.     X. Name: 2018Reach2A.zip         Description: shapefile for mapped channel delineation reach 2A in 2018.     Y. Name: 2021Reach1.zip         Description: shapefile for mapped channel delineation reach 1 in 2021.     Z. Name: 2021Reach2B.zip         Description: shapefile for mapped channel delineation reach 2B in 2021.     AA. Name: 2021Reach2Bshort.zip         Description: shapefile for mapped channel delineation reach 2Bshort in 2021.     AB. Name: 2021Reach3A.zip         Description: shapefile for mapped channel delineation reach 3A in 2021.     AC. Name: 2021Reach3B.zip         Description: shapefile for mapped channel delineation reach 3B in 2021.     AD. Name: 2021Reach4A.zip         Description: shapefile for mapped channel delineation reach 4A in 2021.     AE. Name: 2022Reach4B.zip         Description: shapefile for mapped channel delineation reach 4B in 2022. 3. Variable List A. Name: FID Description: Feature ID that uniquely identifies each feature in a shapefile B. Name: Shape Description: Attribute that stores the feature's geometry in a separate dBase file C. Name: Shape_Leng Description: geometric length of the feature in meters D. Name: Shape_Area Description: geometric area of the feature in square meters E. Name: Chan-area Description: geometric area of the feature in square meters 4. Missing data codes: NA 5. Specialized formats of other abbreviations used: NA