Velocity, Discharge, and Dye Concentrations During a Dye Tracer Study on the Lower Sandusky River, Ohio, July 11-13, 2017

A dye tracer study was completed on the lower Sandusky River between July 11-13, 2017, during a confirmed Grass carp (Ctenopharyngodon idella) spawning event. The data contained in this data release include time series of dye concentration at fixed stations downstream of the injection site and three-dimensional water-velocity data and discharge measurements collected using acoustic Doppler current profilers (ADCPs) deployed from two U.S. Geological Survey (USGS) survey boats stationed on the river during the study. At 8:54 am Eastern Standard Time on July 11, 2017, 13.5 liters of Rhodamine WT dye in a 20-percent solution was injected into the Sandusky River at the Tiffin Road bridge crossing (41.327110, -83.130339). The dye was injected as a slug from the downstream side of the bridge at the approximate center of the channel. At the time of the injection, the discharge 2.7 miles upstream of the injection site at the USGS streamflow gaging station on the Sandusky River near Fremont, Ohio, (USGS 04198000) was approximately 5,788 cubic feet per second and increasing. All coordinates given in this data release are in (latitude, longitude) pairs in decimal degrees with North and East defined as positive and referenced to the World Geodetic System 1984 (WGS84) datum unless otherwise stated. All times are in Eastern Standard Time (EST) unless otherwise stated. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. government.