DEQ manages the Total Maximum Daily Load program for the State
of Oklahoma. A TMDL is the process of establishing the sources of
impairment in a given waterbody, whether from point sources (discharges)
or non-point sources (runoff), determining the amount of reduction
necessary to meet water quality standards in that waterbody, and
allocating the loads to the various contributors of pollution. A
margin of safety is also included in the TMDL calculation process.
Water-quality modeling is the linkage between the sources of pollution
and the instream water quality of a given waterbody. A model is
a representation of the water-quality processes that occur in a
given waterbody.
Water-quality modeling can be resource-intensive. Different levels
of complexity may be used depending on the level of confidence required
in a given situation.
- Canadian River Area Bacteria TMDL
- Canadian River (Upper)
- Dog & Cat Creek
- Fort Cobb
- Neosho River Basin
- Salt Creek
Turbidity TMDL
- Sans Bois Creek Area Bacteria TMDL
- Thunderbird
- Turkey Creek
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For questions about TMDLs & Water Quality Modeling, please
contact Mark Derichsweiler.
Verdigris-Neosho Area Watershed Bacterial and Turbidity TMDL
Public Notice | Final TMDL Report
08 Aug 2012
Cimarron River Bacterial and Turbidity TMDL
Public Notice | Final TMDL Report
01 Aug 2012
Arkansas-Verdigris Area Watershed Bacterial and Turbidity TMDL
Public Notice | Final TMDL Report
01 Aug 2012
Muddy Boggy Bacterial and Turbidity TMDL
Public Notice | Final TMDL Report
26 Jul 2012
Red River Bacterial and Turbidity TMDL
Public Notice | Final TMDL Report
11 Jul 2012
Washita River Study Area Bacterial TMDL
Public Notice | Final TMDL Report
07 Jul 2012
Guthrie Lake and Liberty Lake Chlorophyll-a TMDL
Public Notice |
Final TMDL Report |
Final TMDL Appendices
10 May 2012
Lake Thunderbird TMDL Project
Notice of Public Meeting - May 4, 2012
3 May 2012
Lake Thunderbird TMDL
Project Page
21 Feb 2012
Rocky Lake and Tom Steed Lake Chlorophyll-a
Final
TMDL Report
13 Sep 2011
Lower Deep Fork Bacteria and Turbidity
Final
TMDL Report
12 Sep 2011
Upper Deep Fork Bacteria and Turbidity
Final
TMDL Report
9 Sep 2011
Salt Fork Turbidity & Bacteria TMDL
Final
TMDL Report
31 Aug 2011
Middle Cimarron Turbidity & Bacteria TMDL
Final
TMDL Report
23 Aug 2011
Lower North Canadian Turbidity & Bacteria TMDL
Public Notice | Final TMDL Report
31 May 2011
Lower Bird Creek Area Bacteria TMDL
Public Notice |
Final TMDL Report
16 May 2011
Upper Cimarron River Bacteria TMDL
Public Notice | Final TMDL Report
2 May 2011
Illinois River Watershed/TMDL Project Public Meeting
15 Dec 2010
Beaver River Final Bacteria & Turbidity TMDL
8 Sep 2010
Caney River Final TMDL
8 Sep 2010
Black Bear Creek Final TMDL
31 Aug 2010
Red River Final TMDL
Part 1 | Part 2
31 Aug 2010
Sulphur Creek Final TMDL
31 Aug 2010
Washita River Final TMDL
31 Aug 2010
Bird Creek Bacteria Final TMDL Report 
23 Aug 2010
Salt Creek Turbidity TMDL
Final TMDL Report
24 May 2010
Skeleton Creek - Cimarron River Area Turbidity TMDL
Final TMDL Report
19 Apr 2010
North Canadian River Area Bacteria TMDL Report
6 Apr 2010
North Canadian (Oklahoma River) Bacteria TMDL Public Meeting Rescheduled
29 Sep 2009
Eucha Lake and Spavinaw Creek TMDL
Final TMDL Report
23 Sep 2009
Salt Creek and Sand Creek Bacteria TMDLs
Final TMDL Report
23 Sep 2009
Lower Cimarron River and Skeleton Creek TMDL
Final TMDL Report
23 Sep 2009
North Canadian River Bacteria TMDL
Public Notice | Draft TMDL Report
29 Jul 2009
Bacteria TMDLs for the Arkansas River Near Tulsa and Haikey Creek
13 Oct 2008
Canadian River Area Final TMDL
18 Sep 2008
Bacteria TMDLs for the Neosho River Basin Report
June 2008
Upper Red River Bacteria TMDLs Report
June 25, 2008
Lower Red River Watershed Pathogen TMDL Final Report
11 Dec 2007
Washita River Watershed Pathogen TMDL Final Report
11 Dec 2007
Boggy Creek Watershed Pathogen TMDL Final Report
11 Dec 2007
Little River Watershed Pathogen TMDL Final Report
11 Dec 2007
TMDL Guide |
