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90.0 <br />80.0 <br />70.0 <br />60.0 <br />Percent 50.0 <br />Saturation 40.0 <br />30.0 <br />20.0 <br />10.0 <br />0.0 <br />Figure 8 - Dissolved Oxygen Along Canal <br />0 <br />DO saturation is reported as the percentage of dissolved oxygen concentration <br />relative to the concentration when completely (100%) saturated at the <br />temperature of the measurement depth.2 Average DO saturation west of the <br />Lateral D Canal ranged from 45.6% at Sample Points B and C to 77.9% at <br />Sample Point E. The highest saturations were recorded at Sample Points D, E, <br />and F, with Sample Point F's average DO saturation being only 2.2% higher than <br />that at Sample Point E, which was the highest average west of the Lateral C <br />Canal. The canal section west of Sample Point D had the lowest DO saturation. <br />e. Turbidity — Turbidity makes a water appear cloudy or opaque. It is the measure <br />of relative clarity of a liquid. The more cloudy or opaque the water the higher the <br />turbidity measurement. Material that causes water to be turbid includes clay, silt, <br />finely divided organic and inorganic particles, algae, soluble colored organic <br />compounds (e.g. tannins produced by decaying leaves), plankton, and other <br />microscopic organisms. Average turbidity in the Study Area is presented in <br />Figure 9. Values are reported in nephelometric turbidity units or NTUs. <br />Figure 9 - Turbidity Along Canal <br />30.0 <br />25.0 <br />20.0 -- <br />z <br />15.0 – <br />10.0 -- - <br />5.0 — --- <br />0.0 <br />A B C D E F <br />' http://www.lakeaccess.org/russ/oxygen.httn <br />12 <br />F:\Public WorksWeithM\Stormwater Projects\IRFWCD 8th Street Canal Water Study\Memo 2 - 8th Street Canal.doc 43 <br />