Long-Term Water Quality Trends in the EvergladesConclusions

• Apparent Trends in WCA Inflow/Outflow TP, 1978-1996:

  • Increasing (Late 1970’s to Late 1980’s)
  • Decreasing (Late 1980’s to Mid 1990’s)

• Lower P Levels in 1992-1996 vs. 1978-1991 Associated with:

  • Implementation of P Controls After 1991:
    • EAA Regulatory Rule
    • Everglades Nutrient Removal Project
  • Wet Conditions (High Rainfall, Stage, & Flow)
  • Changes in Water Management

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