Frank L Engel John F Fulton Carl J Legleiter Paul J Kinzel Duncan B Morel Matt J Nicotra C Alan Kirk Brandon T Forbes 20260204 publication https://doi.org/10.5066/P9DOXMW3 The child item includes discharge measurements, channel area, surface velocities, and derived discharges using the entropy-based probability concept and four image velocimetry algorithms. The probability concept parameter ϕ (phi_ was computed using field methods and derived from pairs of mean and maximum velocities. The dataset provides a comparison of remote sensing-derived discharges versus discrete acoustic Doppler Current Profiler measurements, highlighting the percent errors and mean absolute differences. <br> Each field site is abbreviated in various files in this data release. File and folder names quickly identify which site a particular file or dataset represents. The following abbreviations are used: <ul> <li>ACS: Anthracite Creek at Somerset, Colorado, USA</li> <li>BRA: Blue River below Dillon, Colorado, USA (collected in August 2023)</li> <li>BRJ: Blue River below Dillon, Colorado, USA (collected in June 2023)</li> <li>CRG: Colorado River below Glenwood Springs, Colorado, USA</li> <li>CRR: Colorado River above Roaring Fork River at Glenwood Springs, Colorado, USA</li> <li>ERW: Eagle River below Milk Creek near Wolcott, Colorado, USA</li> <li>MCA: Maroon Creek near Aspen, Colorado, USA</li> <li>RFG: Roaring Fork at Glenwood Springs, Colorado, USA</li> </ul> These data were collected as part of a series of field experiments to test the validity of using small unoccupied aircraft systems (sUAS) to collect stream surface velocity and discharge measurements. 20230612 20230808 Publication Date Complete None planned -107.3367 -106.0666 39.6255 38.9543 None USGS Science Data Catalog (SDC) inlandWaters remote sensing stream-gage measurement streamflow stream discharge hydrographic datasets acoustic doppler current profiling videography aerial video sUAS unmanned aircraft system unoccupied aircraft system drone Remote Sensing Water Resources Remote Sensing Water Resources Doppler radar velocimetry image velocimetry probability concept large-scale particle image velocimetry space-time image velocimetry USGS Metadata Identifier USGS:68bb1f42d4be0209bab07d0c 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. Frank Engel USGS - WATER Geographer (EDGE) Hydrologic Remote Sensing Branch mailing and physical

Univ Heights Business Park,University Heights Business Pk

San Antonio TX 78249 210-691-9213 fengel@usgs.gov Accuracy of acoustic Doppler Current Profiler (ADCP)-derived discharge data was analyzed using standard U.S. Geological Survey procedures as required by policy. The accuracy of the remote sensing-derived discharge measurements is evaluated against the ADCP results. The data are logically consistent The data are complete No horizontal accuracy tests performed No vertical accuracy tests performed D. Phil Turnipseed Vernon B. Sauer 20100101 publication n/a US Geological Survey https://doi.org/10.3133/tm3A8 Digital and/or Hardcopy 20100101 publication date T&M 3-A8 Techniques and methods used to collect discharge measurements at USGS gaging locations Frank Engel 20230807 1.0.0 application/service https://code.usgs.gov U.S. Geological Survey https://doi.org/10.5066/p9i5jabk Digital and/or Hardcopy 20230807 publication date SurfVelTools Software Used to compute probability concept parameters Antoine Patalano Carlos Marcelo García Andrés Rodríguez 20171021 2.6 application/service https://www.sciencedirect.com/science/article/abs/pii/S0098300417307045?via%3Dihub Digital and/or Hardcopy 20171021 publication date RIVeR Used to process videos into discharge measurements Ken Watanabe Ichiro Fujita Makiki Iguchi Makoto Hasegawa 20210730 1.0.1 application/service https://doi.org/10.3390/w13152079 Digital and/or Hardcopy 20210730 publication date Hydro-STIV Paper used to describe the Hydro-STIV software using to compute discharge measurements from UAS video Frank Engel Travis Knight 20250603 1.0.0.1 application/service https://code.usgs.gov U.S. Geological Survey https://doi.org/10.5066/p1kmvcny Digital and/or Hardcopy 20250603 publication date IVyTools Used to process videos into discharge measurements Carl J Legleiter 20230117 2.2.1 application/service https://code.usgs.gov U.S. Geological Survey https://doi.org/10.5066/p9ad3vt3 Digital and/or Hardcopy 20230117 publication date TRiVIA Used to process videos into discharge measurements Conventional discharge data were collected in the field using an acoustic Doppler current profiler (ADCP) according to standard procedures as outlined in Turnipseed and Sauer (2010). The channel area was derived for each site during this step. T&M 3-A8 20230612 Water surface velocities were measured at the y-axis position using a Doppler velocity radar. 20230612 The probability concept phi parameter was computed using the Surface Velocity Toolbox (Engel, 2023). SurfVelTools Software 20230612 UAS were flown to collect video of each river site concurrently or near the same time as ADCP discharge measurements were being made. 20230612 UAS video was processed to compute discharge results using the RIVeR software. Results were compared to the ADCP measurements to compute a percentage difference as (ADCP Discharge - Remote Sensing Discharge) / ((ADCP Discharge + Remote Sensing Discharge) / 2)) * 100 RIVeR 20230612 UAS video was processed to compute discharge results using the HydroSTIV software. Results were compared to the ADCP measurements to compute a percentage difference as (ADCP Discharge - Remote Sensing Discharge) / ((ADCP Discharge + Remote Sensing Discharge) / 2)) * 100 Hydro-STIV 20230612 UAS video was processed to compute discharge results using the IVyTools software. Results were compared to the ADCP measurements to compute a percentage difference as (ADCP Discharge - Remote Sensing Discharge) / ((ADCP Discharge + Remote Sensing Discharge) / 2)) * 100 IVyTools 20230612 UAS video was processed to compute discharge results using the TRiVIA software. Results were compared to the ADCP measurements to compute a percentage difference as (ADCP Discharge - Remote Sensing Discharge) / ((ADCP Discharge + Remote Sensing Discharge) / 2)) * 100 TRiVIA 20230612 1.0E-6 1.0E-6 Decimal degrees World Geodetic System 1984 WGS84 6378137.0 298.257223563 velocity_and_discharge.csv Comma Separated Value (CSV) file containing data. Producer Defined Site_ID Site abbreviation Producer Defined CRR Colorado River above Roaring Fork River at Glenwood Springs, Colorado, USA Producer defined ACS Anthracite Creek at Somerset, Colorado, USA Producer defined MCA Maroon Creek near Aspen, Colorado, USA Producer defined CRG Colorado River below Glenwood Springs, Colorado, USA Producer defined BRJ Blue River below Dillon, Colorado, USA (collected in June 2023) Producer defined BRA Blue River below Dillon, Colorado, USA (collected in August 2023) Producer defined Measurement_Date Date of the measurement Producer Defined Date is formatted MM/DD/YYYY adcp_discharge Discharge measured by Acoustic Doppler Current Profiler (ADCP) Producer Defined 4.11 294.0 cubic meters per second 0.01 phi Probability concept phi parameter Producer Defined 0.526 0.719 dimensionless 0.01 radar_surface_velocity Maximum velocity of the water surface as measured by Doppler Velocity Radar Producer Defined 1.07 4.42 meters per second 0.01 channel_area Channel cross-section area Producer Defined 8.46 135.0 square meters 0.01 phi_hydro_stiv Discharge computed using phi and surface velocity derived from space-time image velocimetry (HydroSTIV). Producer Defined 5.28 294.0 cubic meters per second 0.01 phi_hydro_stiv_perr Percent difference of the phy_hydro_stiv discharge from the adcp_discharge result for each site. Producer Defined 0.0 40.0 percent 0.1 alpha alpha coefficient used to relate measured surface velocity to the depth-averaged velocity Producer Defined 0.85 0.85 dimensionless 0.01 RIVeR_discharge Discharge computed using the RIVeR software and UAS Videos Producer Defined -- Not available Producer defined 6.8 287 cubic meters per second 0.1 RIVeR_discharge_perr Percent difference of the RIVeR_discharge discharge from the adcp_discharge result for each site. Producer Defined -- Not available Producer defined -53.0 46 percent 0.1 alpha_hydro_stiv Discharge computed using the Hydro-STIV software and UAS Videos Producer Defined 3.0 303.0 cubic meters per second 0.1 alpha_hydro_stiv_perr Percent difference of the alpha_hydro_stiv discharge from the adcp_discharge result for each site. Producer Defined -27.0 29.0 percent 0.1 IVyTools_discharge Discharge computed using the IVyTools software and UAS Videos Producer Defined 4.21 302.0 cubic meters per second 0.1 IVyTools_discharge_perr Percent difference of the IVyTools_discharge from the adcp_discharge result for each site. Producer Defined -0.41 44.0 percent 0.1 TRIViA_discharge Discharge computed using the TRiVIA software and UAS Videos Producer Defined -- Not available Producer defined 8.3 281 cubic meters per second 0.1 TRIViA_discharge_perr Percent difference of the TRiVIA_discharge from the adcp_discharge result for each site. Producer Defined -- Not available Producer defined -23.0 21 percent 0.1 Discharge measurements are presented as a single ZIP archive file. Within the archive, separate folders for each field site are included. In these folders, raw data from either a TeleDyne RDI RiverPro 1200 (ACS, CRG, CRR, ERW, MCA, RFG) or RioPro 1200 (BRA, BRJ) Acoustic Doppler Current Profiler. Documentation for each sensor type is available at: TeleDyne RDI RiverPro Acoustic Doppler Current Profiler, https://www.teledynemarine.com/en-us/products/Pages/riverpro-adcp.aspx U.S. Geological Survey GS ScienceBase 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 on any other system or for general or scientific purposes, 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. Digital Data https://doi.org/10.5066/P9DOXMW3 None 20260204 Frank L. Engel U.S. Geological Survey, WATER Geographer mailing address

Ste. 290

San Antonio TX 78249 US 210-691-9213 210-691-9270 fengel@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-012-2002