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Long-term Field Test of an Optical Sediment-Concentration Sensor at Low-Water Stream Crossings

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2007 ASAE Annual Meeting  072137.(doi:10.13031/2013.37080)
Authors:   Yali Zhang, Naiqian Zhang, Gerhard M Grimm, Carl Johnson, Darrell Oard, James Steichen
Keywords:   Sediment, Optical sensor, Water quality, Low-water crossing, Fouling

Suspended sediment concentration (SSC) is one of the most important indicators of water quality. Monitoring SSC in field settings is also fundamental to determine the sediment transportation. An optical sediment-concentration sensor was developed to allow real-time monitoring of sediment concentration at low-water stream crossings. Long-term field tests were conducted at two low-water crossings in Kansas and Georgia to evaluate the sensor performance, and the effect of fouling, including bio-fouling, on the measurement. Methods of removing the fouling effect through data correction were also developed.

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