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.