Velocity profiling at the US Army Corps of Engineers Electric Dispersal Barrier in the Chicago Sanitary and Ship Canal during passage of fully loaded commercial tows: Ambient Velocity Measurements

In 2016, the U.S. Fish and Wildlife Service, U.S. Geological Survey, and U.S. Army Corps of Engineers undertook a large-scale interagency field study to determine the influence of commercial barge vessels on the efficacy of the Electric Dispersal Barrier System (EDBS) in the Chicago Sanitary and Ship Canal (CSSC) in preventing fish passage. This study included a series of trials in which a tow, consisting of a tug vessel and six fully-loaded barges, transited the EDBS in both upstream-bound (n = 23) and downstream-bound (n = 22) directions. A 600 kHz Teledyne RDI Channel Master Acoustic Doppler Velocity Meter (ADVM), was mounted on the west canal wall at a depth of approximately 5.5 feet (1.7 meters), as measured on August 2, 2016 at 09:15 am CDT. The approximate elevation of the ADVM was 571.2 feet (NAVD88). The wall mounted instrument was located at (41.6423629, -88.060329). The provisional water surface elevation at the USGS streamflow gaging station on the Chicago Sanitary and Ship Canal ranged from 575.81 feet to 577.29 feet over the study period (August 2 to 11, 2016). The ADVM measured horizontal profiles of streamwise and cross-stream components of velocity in the 1 to 5 minutes of time prior to the tow entering the acoustic path of the instrument. During each trial the ADVM profiled nearly the entire width of the canal when no barges were located in the path of its acoustic beams (45 bins spaced by 1.0 meter starting 2.8 meters from the west wall). All velocity measurements represent an average of 10 pings, recorded every 10 seconds during measurement, and are included in this data release as Comma Separated Value (CSV) files. This Data Product is related to these other data products collected at the EDBS during the August 2016 study period: