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NOTE: From May 7 to May 13; the IL offices of the USGS Water Science Center are transitioning to a new data management software package. While you may not notice this transition, some sites may have problems or delays in being updated. We are actively monitoring these conditions and are resolving them as quickly as possible.
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Value Apr 29
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)