Lake Okeechobee Phosphorus Total Maximum Daily Load (TMDL)

In 1999, the Department initiated the development of a phosphorus TMDL for Lake Okeechobee. This TMDL, adopted by rule in May 2001, proposes an annual load of 140 metric tons of phosphorus to Lake Okeechobee to achieve an in-lake target phosphorus concentration of 40 ppb in the pelagic zone of the lake. This restoration target will support a healthy lake system, restore the designated uses of Lake Okeechobee and allow the lake to meet applicable water quality standards. The annual load was calculated using computer models developed with guidance from the Lake Okeechobee TMDL Technical Advisory Committee. The entire load is allocated to the sum of all nonpoint sources. Currently, there are no point sources discharging directly to Lake Okeechobee. If new information is available, the TMDL can undergo a re-evaluation within 5 years of its adoption.

The implementation of the TMDL will follow a phased management approach consistent with the Lake Okeechobee Protection Act, Section 373.4595, Florida Statutes, to achieve the water quality goal by 2015.

• Lake Okeechobee TMDL August 2001 (1.46 MB)
  • Appendix One (126K)
  • Appendix Two (536K)
  • Appendix Three (139K)
  • Appendix Four (231K)
  • Appendix Five (187K)
• Lake Okeechobee Phosphorus TMDL Rule

Links Related to Topic

• Total Maximum Daily Loads (TMDLs)
• Development of TMDLs in the Northern Tributaries to Lake Okeechobee

For more information please contact Frank Nearhoof of the Division of Environmental Assessment and Restoration at 850-245-8420.

Office of Ecosystem Projects
Program Coordination and Regulation Program
 3900 Commonwealth Boulevard, MS-24
Tallahassee, FL 32399-3000
850-245-8346