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Spatial distribution of Rhodamine WT dye concentration measured in the Des Plaines River near Brandon Road Lock and Dam near Rockdale, Illinois (October 20-21, 2015)


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Jackson, P.R., 2016, Spatial distribution of Rhodamine WT dye concentration measured in the Des Plaines River near Brandon Road Lock and Dam near Rockdale, Illinois (October 20-21, 2015): U.S. Geological Survey data release,


Two survey boats equipped with differential Global Positioning System (GPS) receivers and Turner Designs C3 submersible fluorometers were used to survey the spatial distribution of the Rhodamine WT dye in the Des Plaines River downstream of the Brandon Road Lock and Dam (BRLD) near Rockdale, Ilinois. Mapping of the dye plume commenced after the lock chamber at BRLD was dyed with 4 liters of Rhodamine WT dye during a routine filling procedure. Measurements of dye concentration downstream collected by these survey boats capture the leakage of dyed water from the lock, the pulse of dyed water exiting the lock during routine emptying of the lock, and the mixing of the dyed water downstream during a 17-minute flushing operation of the lock. [...]


Point of Contact :
P. Ryan Jackson
Author :
P. Ryan Jackson
Metadata Contact :
P. Ryan Jackson
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey – ScienceBase
USGS Mission Area :
Water Resources
SDC Data Owner :
Central Midwest Water Science Center

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These data were collected during dye tracing surveys of the Des Plaines River downstream of Brandon Road Lock and Dam (BRLD) near Rockdale, Illinois. The purpose of this dye study was to assess the mixing, advection, and dispersion of dye within the BRLD lock chamber and in the approach channel downstream. These data will aid in the design of potential strategies for preventing upstream transport of invasive Asian carp through BRLD. Dye was injected into the intakes for the lock chamber at the start of the filling process. The dye was injected through grates atop the intake channels on both sides of the lock. Injection began at 1024 hours on October 20, 2015, and ended at 1030 hours on October 20, 2015. A total of 4 liters of Rhodamine WT in a 20 percent solution was injected (2 liters on each side of the lock). The target dye concentration in the lock chamber was 9 parts per billion (ppb). Key operation changes occurred at the following times: 10/20/2015 10:22 (start filling the lock chamber); 10/20/2015 10:43 (end filling the chamber); 10/20/2015 12:26 (start emptying lock chamber); 10/20/2015 12:43 (lock chamber empty, downstream gates remain closed); 10/20/2015 14:00 (downstream valves opened to drain leakage into lock chamber); 10/20/2015 14:08 (downstream gates opened); 10/20/2015 14:15 (lock chamber flushing procedure started; 1/4 opening of upstream valves); 10/20/2015 14:32 (flushing procedure ended); 10/20/2015 15:32 (begin filling lock chamber); 10/20/2015 15:49 (begin emptying of partially filled lock chamber); 10/20/2015 16:00 (Lock reopened to normal navigational traffic). All times are in Central Daylight Time.

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DOI doi:10.5066/F70G3H8C

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