Bathymetric, water velocity, and water temperature data on the St. Croix River between St. Croix Falls, Wisconsin, and Stillwater, Minnesota, June 19

Jackson, P. Ryan Lund, J. William Kasprak, Alan Ziegeweid, Jeffery R. 20210811 Bathymetric, water velocity, and water temperature data on the St. Croix River between St. Croix Falls, Wisconsin, and Stillwater, Minnesota, June 19–22, 2018 Digital Data Reston, VA U.S. Geological Survey https://doi.org/10.5066/P93K0UUI From June 19–22, 2018, bathymetric, water velocity, and water temperature data were collected on the St. Croix River between St. Croix Falls, Wisconsin, and Stillwater, Minnesota. These data were collected with a Teledyne RD Instruments RiverRay acoustic Doppler current profiler (ADCP) and georeferenced using a Trimble R10 Global Navigation Satellite System (GNSS) receiver connected to a real-time virtual reference station (VRS) network. The GNSS receiver was mounted directly above the ADCP and data were read directly into the ADCP data collection software. Bathymetry, water temperature, and detailed, three-dimensional water velocity data were collected at 26 cross sections over the 47.8-kilometer (km) survey reach with three cross sections consisting of two channels separated by an island. Data were also collected between survey cross sections along the approximate centerline of the channel(s). Not all branches of the multithreaded St. Croix River were surveyed due to access and safety concerns. The ADCP data were post-processed using the Velocity Mapping Toolbox (VMT) version 4.09 (Parsons and others, 2013). References Cited: Parsons, D.R., Jackson, P.R., Czuba, J.A., Engel, F.L., Rhoads, B.L., Oberg, K.A., Best, J.L., Mueller, D.S., Johnson, K.K., and Riley, J.D., 2013, Velocity Mapping Toolbox (VMT)—A processing and visualization suite for moving-vessel ADCP measurements: Earth Surface Processes and Landforms, v. 38, p. 1244–1260. These data were collected to refine and validate an existing U.S. Army Corps of Engineers Hydrologic Engineering Center River Analysis System (HEC-RAS) hydraulic model of the St. Croix River between St. Croix Falls, Wisconsin, and Stillwater, Minnesota. Additionally, these data were used to examine invasive carp egg and larval drift within the study reach. 20180619 20180622 ground condition Complete None planned -92.8050 -92.645988 45.411796 45.056027 USGS Thesaurus bathymetry acoustic doppler current profiling water temperature surface water (non-marine) USGS Metadata Identifier USGS:60661d64d34edc0435be53cd Geographic Names Information System (GNIS) Minnesota Wisconsin St. Croix County Polk County Chisago County Washington County St. Croix River none none Patrick R Jackson SOUTHEAST REGION: CENTRAL MIDWEST WSC URBANA Hydrologist mailing and physical

405 N. Goodwin Avenue

Urbana IL 61801 US 217-328-9719 pjackson@usgs.gov The accuracy of the thermistor on the acoustic Doppler current profiler (ADCP) was verified in the field against a YSI EXO2 multiparameter sonde and the sonde thermistor is checked annually with a NIST-certified thermometer in the laboratory in a thermal bath over a range of temperatures. The mean temperature difference between the ADCP thermistor and the YSI thermistor was < 0.1 degrees Celsius (water temperature data is reported to 0.1 degrees Celsius in this data release). Only GPS data that had a GPS quality of 4 indicating real-time kinematic (RTK) quality were used for vertical positioning (elevation). No formal attribute accuracy tests for the acoustic Doppler current profiler velocity or bathymetry measurements were conducted. No formal logical accuracy tests were conducted Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted Data from the acoustic Doppler current profiler (ADCP) were post-processed with the Velocity Mapping Toolbox (VMT) v4.09 (Parsons and others, 2013). VMT is open source and publicly available at https://hydroacoustics.usgs.gov/movingboat/VMT/VMT.shtml. Longitudinal (streamwise) profiles between cross sections were processed with the VMT GIS Export Tool with a 120-second temporal averaging window and full-depth spatial averaging. Details of how this tool works can be found in the VMT v4.09 User Manual included in the VMT source code ZIP file (https://github.com/frank-engel-usgs/VMT/archive/master.zip). The four transects measured at each of the 26 cross sections in the survey were averaged using VMT to produce a mean cross section (bathymetry) and associated flow field (3-dimensional velocity distribution). These data were exported from VMT as Excel files for each of the 26 cross sections. Page 75 of the VMT v4.09 User Manual describes the format of these Excel files and each Excel file contains a summary page with associated metadata and data descriptions. Due to poor cellular coverage in the study reach, the VRS network was not always accessible resulting in periods without RTK-quality GPS data. Only depths, referenced to the local water surface, are available for these periods because bed elevations could not be accurately computed. 20181220 Point Universal Transverse Mercator 15 0.9996 -93.0 0.0 500000.0 0.0 coordinate pair 0.01 0.01 METERS World Geodetic System 1984 WGS 84 6378137.0 298.257223563 North American Vertical Datum of 1988 0.01 meters Explicit elevation coordinate included with horizontal coordinates Local water surface 0.01 meters Explicit depth coordinate included with horizontal coordinates All_Long_Profiles_UTM.csv Comma Separated Value (CSV) file containing physical data for limited locations along the main channel and several branches of the St. Croix River between St. Croix Falls, Wisconsin, and Stillwater, Minnesota. Producer defined ProfNum Longitudinal (streamwise) profile identification number. Producer defined 1_000 4_035 Datetime_UTC Date and time of the measurement, in Coordinated Universal Time (UTC), MM/DD/YYYY hh:mm:ss Producer defined 06/19/2018 17:35:44 06/22/2018 21:18:29 UTM_x_m Easting coordinate, in meters, Universal Transverse Mercator (UTM), zone 15N Producer defined 516035.15 527282.72 meters UTM_y_m Northing coordinate, in meters, Universal Transverse Mercator (UTM), zone 15N Producer defined 4991185.64 5027257.78 meters Temp_C Water temperature, in degrees Celsius Producer defined 21.4 22.7 degrees Celsius Depth_m Total water column depth, in meters Producer defined 2.78 12.40 meters DAV_mag_mps Depth-averaged velocity magnitude, in meters per second Producer defined 0.086 1.486 meters per second DAV_vert_mps Depth-averaged vertical velocity, in meters per second Producer defined -0.051 0.114 meters per second ShearVel_mps Shear velocity, in meters per second Producer defined 0.005 0.142 meters per second Discharge_cms Discharge, in cubic meters per second Producer defined 154.4 1023.9 cubic meters per second CrossSections.zip Compressed ZIP file containing detailed velocity and bathymetry for 26 cross sections of the St. Croix River between St. Croix Falls, Wisconsin, and Stillwater, Minnesota. Data from each cross section are contained in Microsoft Excel files exported from the Velocity Mapping Toolbox (VMT) v4.09, an open-source post-processing software for acoustic Doppler current profiler data (Parsons and others, 2013). Producer defined using the Velocity Mapping Toolbox (VMT) v4.09. See page 75 of the VMT User Guide v4.09 for a detailed description of Excel output format (available in the VMT source code documentation at https://github.com/frank-engel-usgs/VMT/archive/master.zip). VMT SUMMARY OF OUTPUT: SINGLE CROSS-SECTION Summary containing metadata for each processed cross section using the Velocity Mapping Toolbox (VMT) v4.09. Producer defined using the Velocity Mapping Toolbox (VMT) v4.09. See page 75 of the VMT User Guide v4.09 for a detailed description of Excel output format (available in the VMT source code documentation at https://github.com/frank-engel-usgs/VMT/archive/master.zip). Cross section metadata, properties, and data structure descriptions generated by the Velocity Mapping Toolbox (VMT) v4.09 (publicly available at https://hydroacoustics.usgs.gov/movingboat/VMT/VMT.shtml). USGS_2018_St.Croix_Shiptracks.kmz Keyhole Markup Language zipped (compressed) file containing ship tracks that describe the position of the survey vessel's acoustic Doppler current profiler (ADCP) for all cross-sectional measurements and longitudinal profiles contained in this data release. Individual KML filenames correspond to ADCP ascii output filenames listed in the Microsoft Excel files exported from the Velocity Mapping Toolbox (VMT) v4.09 for each cross section. Producer defined St.Croix.001_0_000_20180619173444_643484_45.398609N_92.650695WShipTrack.kml Example Keyhole Markup Language (KML) filename associated with a ship track. Individual KML filenames have a matching acoustic Doppler current profiler ascii output filename listed in the Microsoft Excel files exported from the Velocity Mapping Toolbox (VMT) v4.09 for each cross section. Producer defined Keyhole Markup Language (KML) filename associated each ship track. Filenames are derived from the matching ascii output file from the acoustic Doppler current profiler. GS ScienceBase U.S. Geological Survey mailing and physical

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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 authors or the U.S. Government. KMZ none Keyhole Markup Language (KML) compressed ZIP file Keyhole Markup Language zipped (compressed) file containing ship tracks that describe the position of the survey vessel's acoustic Doppler current profiler (ADCP) for all cross-sectional measurements and longitudinal profiles contained in this data release. Individual KML filenames correspond to ADCP ascii output filenames listed in the Microsoft Excel files exported from the Velocity Mapping Toolbox (VMT) v4.09 for each cross section. https://doi.org/10.5066/P93K0UUI KMZ files can be opened and viewed using the free Google Earth program available at https://www.google.com/earth/. None While the Velocity Mapping Toolbox (VMT) is not required to access or view the data in this data release, the user is encouraged to download the VMT v4.09 User Manual (included in the source code ZIP file available at https://github.com/frank-engel-usgs/VMT/archive/master.zip). More information on VMT is available at https://hydroacoustics.usgs.gov/movingboat/VMT/VMT.shtml. 20210811 Patrick R Jackson SOUTHEAST REGION: CENTRAL MIDWEST WSC URBANA Hydrologist mailing and physical

405 N. Goodwin Avenue

Urbana IL 61801 US 217-328-9719 pjackson@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998