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By: Taylor Tear, Swati Mehrotra, Jamie Nye

Turbidity. By: Taylor Tear, Swati Mehrotra, Jamie Nye. Turbidity. -The measurement of the amount of sediment in a given area in a river depending on its clarity. The murkier the water, the higher the turbidity. -A test of water quality. Turbidity in the River System. High turbidity

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By: Taylor Tear, Swati Mehrotra, Jamie Nye

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  1. Turbidity By: Taylor Tear, Swati Mehrotra, Jamie Nye

  2. Turbidity -The measurement of the amount of sediment in a given area in a river depending on its clarity. The murkier the water, the higher the turbidity. -A test of water quality

  3. Turbidity in the River System High turbidity Particles absorb heat Water heats Less light into water Decrease in photosynthesis Decrease in Oxygen Decrease in diversity of aquatic life

  4. JTU A.K.A. Jackson Turbidity Unit -Unit of turbidity -Measured using Jackson Tube which is suspended over candle. A water sample is put into the tube until the fire can not be seen from above. -No longer used because it doesn’t recognize low levels of turbidity

  5. NTU A.K.A. Nephelometric Turbidity Unit -Unit of turbidity -Measured with a nephelometer -Measures the amount of light dispersed by suspended particles in water. -Low NTU = high water clarity (small amount of dispersal) -High NTU = low water clarity (large amount of dispersal)

  6. Sources of Turbidity • Construction, quarrying, mining, coal recovery, etc. can cause lots of sediment to enter a river during rain storms because of storm water runoff • Urban areas cause turbidity through storm water pollution from paved roads, bridges, and parking lots.

  7. Acceptable Ranges • Aquatic Life – less than 25 NTU • Waters with Trout – less than 10 NTU • Calm Pools – less than 50 NTU • Water Fit for Humans to Drink – 1 to 5 NTU

  8. Reducing Turbidity in Rivers • Abstaining from dumping wastes into the river • Building reservoirs and ponds act as areas of a river where sediment can settle • Building wells and infiltration galleries along rivers and using their function as a natural aquifer as a filter.

  9. Sources  • http://www.bikalabs.com/helpcentre/glossary/ntu-nephelometric-turbidity-unit • http://www.epa.gov/ogwdw/mdbp/word/turbidity/chap_09.doc • http://dictionary.babylon.com/jackson%20turbidity%20unit%20(jtu)/ • http://www.pleasanton.k12.ca.us/avhsweb/thiel/creek/data/turbid.html • http://www.indiana.edu/~bradwood/eagles/turbidity.htm • http://en.wikipedia.org/wiki/Turbidity

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