Water velocity profile measurements in River Raisin near Monroe, Michigan, August 17-September 13, 2023

These data were collected by a SonTek Argonaut-XR 3000-MHz 3D acoustic Doppler current meter (ADCM) that was mounted on an approximately 75-pound mounting plate. The ADCM was deployed on the bottom of River Raisin at approximately 41.899978°N, -83.353548°E and took measurements from August 17-September 13, 2023. These data were collected in cooperation with U.S. Environmental Protection Agency (USEPA), to provide them with data that may help them better understand water velocities caused by river currents, ship traffic, or anything else that could cause the erosion of a 'cap' installed on the river bed that was designed to prevent the dispersion of contaminated soil. In reviewing the data it was noticed that on September 6, 2023 between 12:10 and 12:15 UTC, after being relatively stable, the ADCM's heading, pitch, and roll changed by approximately 121°, 60°, and 21°, respectively. Velocity and velocity related statistics and measurements were erroneous after this event.