Recent Decreases in WCA Outflow P Concs. Potential Causal Factors

• Phosphorus Load Controls

  • BMP’s / EAA Regulatory Rule (>=1992)
  • ENR Project Operation (>= August 1994)

• Changes in Operation

  • More Regulatory Releases from Lake Okeechobee
  • Higher Regulation Schedule in Refuge & WCA-2A

• Wet Conditions (1992-1996)

  • High Rainfall, Stage, & Discharge
  • Higher Net P Uptake Rates in WCA’s

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