"People Focussed. Performance Driven"

click here to subscribe to our feed

        

Home > County Projects > Lake Munson Drawdown

Lake Munson Drawdown

DURATION

Lake Munson Drawdown will occur from
October 18, 2010 through June 14, 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 1970's.
* Hydrilla was introduced in the 1980's 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