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Total Maximum Daily Loads Highlights

Total Maximum Daily Loads (TMDL) Program

News & Announcements

On January 27, 2017, BASF Corporation filed with the department two lower cost regulatory alternatives (“LCRAs”) on the proposed Lake Talquin nutrient TMDL (Rule 62-304.305, F.A.C.).  On February 23, 2017, the department rejected the proposed LCRAs.  The department’s response to the proposed LCRAs are available to the public and may be obtained by contacting Erin Rasnake, Program Administrator, Water Quality Evaluation and TMDL Program, Florida Department of Environmental Protection, Mail Station #3555, 2600 Blair Stone Road, Tallahassee, Florida 32399-2400, or via email: Erin.Rasnake@dep.state.fl.us

New! The department announces a public meeting to present and receive public comments on the draft total maximum daily load (TMDL) for the nutrient impairment of the DeLeon Springs and Gemini Springs, in the Middle St. Johns River Basin, to be adopted in Rule 62-304.505, F.A.C . The meeting is scheduled for May 22, 2017, 2:00 p.m. at the Volusia County Council Chambers (2nd floor), Thomas C. Kelly Administration office, 123 W. Indiana Ave, DeLand, FL 32720. The draft TMDL document for these impaired waters will be placed on the department’s TMDL website by April 20, 2017, and will be provided upon request to interested parties by mail or via e-mail distribution. The department will accept written comments on the draft TMDLs, as well as the establishment of these nutrient TMDLs as site specific interpretations of the narrative nutrient criteria, through May 26, 2017. Written comments should be directed to: Richard Hicks, Mail Station #3555, 2600 Blair Stone Road, Tallahassee, Florida 32399-2400, email: richard.w.hicks@dep.state.fl.us.

New! The department announces a hearing to which all persons are invited. The hearing is scheduled for June 16, 2017, 2:00 p.m. at the Bob Martinez Center, 2600 Blair Stone Road, Conference Room 609, Tallahassee, Florida. The hear is to receive public comments on total maximum daily loads (TMDLs) for impaired waters in the Ochlockonee Basin, to be adopted in Rule 62-304.305, F.A.C. The TMDL to be presented at the public hearing is the nutrient TMDL for Lake Talquin. This nutrient TMDL, if adopted, will constitute a site specific numeric interpretation of the narrative nutrient criterion set forth in paragraph 62-302.530(90)(b), F.A.C., that will supersede the otherwise applicable numeric nutrient criteria in subsection 62-302.531(2), F.A.C., for the particular surface water segments. An updated draft report for this TMDL will be posted on the department’s TMDL webpage by May 17, 2017, for public review. Written comments on the proposed TMDL should be directed to: Erin Rasnake, Program Administrator, Water Quality Evaluation and TMDL Program, Florida Department of Environmental Protection, Mail Station #3555, 2600 Blair Stone Road, Tallahassee, Florida 32399-2400, or via email: Erin.Rasnake@dep.state.fl.us

New! The department announces the availability of updated draft nutrient TMDL reports as site specific interpretations of the narrative nutrient criterion for impaired estuaries for stakeholder review and comment that are located in the Charlotte Harbor Basin.  The public is invited to attend a workshop on the TMDLs for Sanibel Slough that will be held at the Sanibel Recreation Center, Sanibel, Florida on June 6, 2017 at 3:00 p.m.  Written comments will be accepted through June 9, 2017 and should be directed to: ansel.bubel@dep.state.fl.us

TMDL Meeting Information Location

DeLeon Springs and Gemini Springs, Middle St. Johns River Basin

May 22, 2017
2:00 PM
(Meeting Agenda)

Volusia County Council Chambers
(located on the second floor)
Thomas C. Kelly administration Center
123 W. Indiana Ave., DeLand, FL 32720

Charlotte Harbor Basin June 6, 2017 at 3:00 p.m
(Meeting Agenda)
Sanibel Recreation Center
3880 Sanibel Captiva Road
Sanibel, Florida
Ochlockonee Basin June 16, 2017
 2:00 PM
(Hearing Agenda)
Florida Department of Environmental Protection  
Bob Martinez Center Room 609
2600 Blair Stone Road
Tallahassee, FL 32399-2400


Everglades sceneWhat is a TMDL?

A TMDL is a scientific determination of the maximum amount of a given pollutant that a surface water can absorb and still meet the water quality standards that protect human health and aquatic life. Water bodies that do not meet water quality standards are identified as "impaired" for the particular pollutants of concern--nutrients, bacteria, mercury, etc., and TMDLs must be developed, adopted and implemented for those pollutants to reduce pollutants and clean up the water body.

The threshold limits on pollutants in surface waters--Florida's surface water quality standards on which TMDLs are based--are set forth primarily in rule 62-302, Florida Administrative Code, and the associated table of water quality criteria.

What are the basic steps in the TMDL program? How does it work?

  1. Assess the quality of surface waters--are they meeting water quality standards? (Surface Water Quality Standards - Chapter 62-302)
  2. Determine which waters are impaired--that is, which ones are not meeting water quality standards for a particular pollutant or pollutants.  (Impaired Waters Rule (IWR) - Chapter 62-303)
  3. Establish and adopt, by rule, a TMDL for each impaired water for the pollutants of concern--the ones causing the water quality problems. (TMDLs - Chapter 62-304)
  4. Develop, with extensive local stakeholder input, Basin Management Action Plans (BMAPs) that....
  5. Implement the strategies and actions in the BMAP
  6. Measure the effectiveness of the BMAP, both continuously at the local level and through a formal re-evaluation every five years.
  7. Adapt--change the plan and change the actions if things aren't working
  8. Reassess the quality of surface waters continuously

We are working on a more comprehensive approach to protecting Florida water quality involving basin-wide assessments and the application of a full range of regulatory and non-regulatory strategies to reduce pollution.  The Total Maximum Daily Load (TMDL) is the heart of this comprehensive approach.

Locations of the Department's Adopted TMDLs

For locations of TMDLs in Florida, please see our State of Florida Adopted TMDLs and Status of TMDLs in Florida documents (State Rule 62-304, Florida Administrative Code F.A.C.). Additionally, you can view our interactive TMDL map.

Please help us improve our service by providing feedback on what you think of our Adopted TMDL document, whether it is useful, and how could we make it better. Please contact Jonathan Turner (Jonathan.Turner@dep.state.fl.us), (850) 245-8438 or Janis Morrow (Janis.Morrow@dep.state.fl.us), (850) 245-8543.

For more information on the development of water quality restoration goals (TMDLs), send e-mail to Erin Rasnake.

Water Quality Evaluation & TMDL Program
2600 Blair Stone Road - Mail Station 3555
 Tallahassee, FL, 32399-2400
Phone: (850) 245-8338

For information on TMDL grants, Section 319 (nonpoint source) grants, and other financial assistance for water infrastructure projects or implementation of urban or agricultural best management practices, please see our financial assistance webpage to determine what opportunities might be right for your project.


Basin 411

Basin Management Action Plans (BMAPs)

Dissolved Oxygen Criteria in Surface Waters

Frequently Asked Questions


Overview of TMDL Program

Numeric Nutrient Criteria

Pollutant Trading PAC

TMDL Tracker

Watershed Assessment

TMDL Documents

Other WWW TMDL Links

9Last updated: May 04, 2017

  2600 Blair Stone Road M.S. 3500   Tallahassee, Florida 32399   850-245-8336 (phone) / 850-245-8356 (fax) 
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