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Lake Munson Drawdown Information Page

DURATION

Lake Munson Drawdown will occur from
October 18, 2010 through May 31, 2011.
 

HISTORICAL BACKGROUND

Lake Munson was originally a cypress swamp and impounded for mill operations.
Stabilized water levels and luxurious plant growth, especially water hyacinths, began the muck build-up process.
Numerous fish kills occurred and active hyacinth spraying dominated work in the 1970s.
Hydrilla was introduced in the 1980s creating a topped out, weed-choked lake.
Leon County began the Lake Henrietta resurrection, Munson Slough re-alignment, and Delta removal during a planned complete drawdown in 1999-2000.
Upon refill, a strong fishery response resulted in high numbers of largemouth bass being produced.
The return of hydrilla, prompted Florida Department of Environmental Protection to implement noxious aquatic plant treatments.
The exotic Island apple snail infested the lake and contributed to the massive reduction of submersed aquatic plants.
Released nutrients allowed for extremely high densities of blue-green algae to flourish.
Muck depth bathymetry and sediment analysis funded by Fish and Wildlife Conservation Commission revealed muck depths up to 8 feet thick.

BENEFITS OF THE DRAWDOWN PROCESS

Improved water quality.
Improved fish spawning substrate.
Lake bottom compaction and oxidation.
Stimulate healthy aquatic plant growth.
Improved esthetics.
Cypress tree roots rejuvenation.
Relatively inexpensive.
Can be repeated as needed.
Muck removal is probably no longer an option until water quality from Munson Slough improves substantially.
Muck removal is very costly while the Drawdown process is not as expensive
The best environmental improvement to the lake was when Leon County implemented an extreme drawdown during the 2000 delta removal.
A trophy bass fishery can develop in Lake Munson with bass over 10 pounds common.


CURRENT RECOMMENDATIONS BY FISH AND WILDLIFE CONSERVATION COMMISSION

Follow Total Maximum Daily Load U.S. Environmental Protection Agency/Florida Department of Environmental Protection guidelines to drastically reduce phosphorus and nitrogen levels.
Conduct another extreme drawdown, like the 2000 event.
Plant emergent plants at locations along the cypress fringe (bulrush, pickerel weed, duck potato, etc.).
Conduct regularly scheduled drawdowns, perhaps every 5-10 years and during the cooler months.

PHOTOS FROM THE PUBLIC MEETING ON SEPTEMBER 30, 2010 AT OAKRIDGE ELEMENTARY SCHOOL
 

CONTACTS:
 

Questions regarding Fish and Wildlife,
please contact:

 

Christopher J. Paxton, Regional Fisheries Administrator
Division of Freshwater Fisheries Management
Northwest Regional Office
Florida Fish and Wildlife Conservation Commission
3911 Hwy 2321 Panama City, FL 32409
Email: chris.paxton@MyFWC.com
Voice: (850) 265-3676
Cell: (850) 596-1375
Fax: (850) 747-5690
Web Site:
www.MyFWC.com
 

Questions regarding Water Quality Sampling and Testing, please contact:
 

Johnny Richardson, Water Resource Scientist
Leon County Department of Public Works
2280 Miccosukee Road, Tallahassee, FL 32308
Email: RichardsonJo@leoncountyfl.gov
Phone: (850) 606-1541
Fax: (850) 606-1501
 

Questions regarding Drawdown Control and Hydraulics, please contact:
 

Felton Ard, P.E., Senior Design Engineer
Leon County Department of Public Works
2280 Miccosukee Road, Tallahassee, FL 32308
Email: ArdF@leoncountyfl.gov
Phone: (850) 606-1515
Fax: (850) 606-1501


Click here to download

PowerPoint Presentation on 2010 Lake Munson Drawdown

or

  PDF File on 2010 Lake Munson Drawdown

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