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Continuous Water-Quality Monitoring

Learn about the advantages and disadvantages of continuous water quality monitoring, including equipment and maintenance costs. Understand the relationships between parameters like DO and pH, DO and temperature, turbidity vs discharge, and surrogate possibilities. Explore applications of continuous monitoring, data synthesis, and site-specific relations to optimize water quality assessment.

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Continuous Water-Quality Monitoring

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  1. Continuous Water-Quality Monitoring

  2. Continuous Water Quality Monitoring Advantages Disadvantages Equipment costs are greater Operation and maintenance costs are greater Vulnerable to damage and/or loss • Needed in rapidly changing systems • Provides better understanding of interaction between constituents • Provides better understanding of transport processes

  3. Relations Between ParametersDO and pH • DO and pH track together • Diurnal Pattern • Why?

  4. Relations Between ParametersDO and Temperature • Super-saturated DO • DO crash in June • Variation in DO changes seasonally

  5. Relations Between ParametersTurbidity –vs- Discharge

  6. Discrete vs Continuous Monitoring

  7. Other Surrogate Possibilities • Relations are developed using discrete samples and linear regression • Regression model used to synthesize continuous record of target parameters that are difficult to monitor. • Parameter -vs- surrogate relations are not universal but site specific

  8. Applications • Continuous monitoring the constituent or its surrogate to aid in identifying occurrence and duration of water-quality parameters that exceed regulatory limits.

  9. Relation between SC and TN

  10. Applications (cont) • Identify and optimize periods for sample collection • Quantify constituent loads (volume/time) • Familiarity with the site and data will lead to a better understanding of physical processes and interactions between constituents

  11. QUESTIONS?

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