Summary of 5 Year Water Quality Trends

• Dissolved oxygen

  • Downward trend – less oxygen – across the entire lake
  • Lower dissolved oxygen during no-spill days

• pH

  • Downward trend – becoming more acidic

• Nutrients such as nitrogen

  • Dramatic increase in nitrogen concentrations – increased eutrophication

• Water Quality Index

  • Caddo Lake rates in the lower “good” category
  • Lower WQI during no spill days

• Metals

  • Some metals in sediment are of concern especially near LHAAP and at midlake

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