Turbidity

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Turbidity

• Protocols for Determining Water Clarity

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Turbidity

• Degree of water clarity
• Clear water low turbidity
• Cloudy or muddy high turbidity

• Algae
• Sediments
• Staining by tanins
• Staining by minerals

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Methods for Determining Turbidity

• Secchi disk
• 20 cm for limnology
• Graduated line or chain
• Measured in meters(cm)
• Shady side of boat
• Repeat and average

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Methods for Determining Turbidity

• Turbidity column
• Pour water into column until image disappears
• Record to nearest cm
• This equates to a Jackson Turbidity Unit (JTU)

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Water Monitoring Sites

• http//www.worldwatermonitoringday.us/index.php
• http//www.ciese.org/curriculum/waterproj/index.sh
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