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Ohio River Dissolved Solids Characterization Study

This technical committee meeting aims to characterize TDS levels in the Ohio River, develop translators for conductivity conversion, and document temporal and spatial variability of TDS constituents to potentially support new water quality criteria. Weekly samples collected among 16 site locations for one year include pH, conductivity, temperature, stream flow, and supplemental analytes. The study also delves into specific ions like chloride, sulfate, bromide, and fluoride to provide detailed TDS data and assess relationships with flow rates.

stephanie-snider
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Ohio River Dissolved Solids Characterization Study

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  1. Characterization of Dissolved Solids in the Ohio River Technical committee meeting October 9-10, 2012

  2. Study Objectives • Characterize ambient background levels of TDS • Develop site-specific translators to convert conductivity to TDS • Quantify TDS constituent makeup to document temporal and spatial variability • Provide data to support possible development of an Ohio River bromide stream criterion

  3. Sampling Design • Weekly samples collected at 16 sites • Collection sites located at water intakes • Participants identified through the WUAC and PIAC • Sampling began in December, 2011 • Study will run for one year

  4. One Year TDS Study • pH • Conductivity • Temperature • Stream flow • Coordinate THM sampling when possible Dissolved Solids Analytes Supplemental Parameters • Chloride • Sulfate • Bromide • Fluoride • Bicarbonate • Total Dissolved Solids Sodium Potassium Magnesium Calcium Lithium

  5. TDS Results Summary

  6. TDS by Location Ohio River Sites

  7. TDS by Location All Sites TDS Standard = 500 mg/L

  8. TDS by Date TDS Standard = 500 mg/L

  9. Chloride

  10. Chloride

  11. Bromide Results Summary

  12. Bromide by Location

  13. Bromide by Date

  14. Sulfate Results Summary

  15. Sulfate by Location

  16. Flow vs TDS OH012

  17. Flow vs TDS MU029

  18. Flow vs TDS OH792

  19. Flow vs. TDS (Monongahela)

  20. Flow vs Chloride (Monongahela)

  21. Flow vs Sulfate (Monongahela)

  22. Flow vs Bromide (Monongahela)

  23. Overall Summary

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