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- Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards
- Causes of Impairment for 303(d) Listed Waters
- Cumulative TMDLs by Pollutant
- Cumulative Number of TMDLs
Data are also available for these cycles:
2002
2004
2006
2008
2010
Waterbody Changes from Prior Cycle
For More Information:
Oklahoma Impaired Waters and TMDL Information
Assessed Waters of Oklahoma by Watershed
Search for a waterbody within Oklahoma
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Oklahoma Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards
Description of this table| NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those previously 303(d)-listed waters now attaining all applicable water quality standards. | ||
| Year Attaining | Number of Waters Attaining | Number of Causes of Impairment Addressed |
|---|---|---|
| 2004 |  1 |
1 |
| 2005 | 24 |
65 |
| 2006 | 1 |
3 |
| 2007 | 4 |
12 |
| 2009 | 17 |
22 |
| 2012 | 23 |
47 |
Oklahoma 1998 Causes of Impairment for 303(d) Listed Waters
Description of this table| NOTE: Click on a cause of impairment (e.g. pathogens) to see the specific state-reported causes that are grouped to make up this category. Click on the "Number of Causes of Impairment Reported" to see a list of waters with that cause of impairment. | |
| Cause of Impairment Group Name | Number of Causes of Impairment Reported |
|---|---|
| Sediment |  234 |
| Nutrients | 218 |
| Turbidity | 202 |
| Pesticides | 183 |
| Organic Enrichment/Oxygen Depletion | 126 |
| Metals (other than Mercury) | 93 |
| Total Toxics | 89 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 48 |
| Habitat Alterations | 47 |
| pH/Acidity/Caustic Conditions | 43 |
| Noxious Aquatic Plants | 26 |
| Toxic Organics | 23 |
| Pathogens | 23 |
| Ammonia | 16 |
| Flow Alteration(s) | 16 |
| Nuisance Exotic Species | 12 |
| Oil and Grease | 8 |
| Taste, Color and Odor | 7 |
| Toxic Inorganics | 6 |
| Temperature | 6 |
| Chlorine | 4 |
Total: 1,430 Causes of Impairment
Oklahoma Cumulative TMDLs by Pollutant
This chart includes TMDLs since October 1, 1995.
Description of this table| NOTE: Click on the underlined "Pollutant" value to see associated listed waters for which a TMDL was developed. Click on the underlined "Number of TMDLs" value to see a listing of those TMDLs for the pollutant. | ||
| Pollutant | Number of TMDLs | Number of Causes of Impairment Addressed |
|---|---|---|
| Enterococcus Bacteria |  215 |
216 |
| Fecal Coliform | 136 |
136 |
| Escherichia Coli (E. Coli) | 102 |
102 |
| Total Suspended Solids (TSS) | 88 |
88 |
| Turbidity | 32 |
32 |
| Dissolved Oxygen | 15 |
15 |
| Organic Enrichment/Low Dissolved Oxygen | 7 |
7 |
| Phosphorus, Total | 6 |
6 |
| Nitrogen, Total | 4 |
4 |
| Ammonia | 3 |
3 |
| Chlorine, Residual (Chlorine Demand) | 1 |
1 |
| Oxygen Demand | 1 |
1 |
| Phosphorus | 1 |
1 |
Total: 611 TMDLs; 612 Causes of Impairment Addressed
Oklahoma Cumulative Number of TMDLs
EPA Fiscal Year starts October 1 and ends September 30.
Description of this table
| NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year. | ||
| Fiscal Year | Number of TMDLs | Number of Causes of Impairment Addressed |
|---|---|---|
| 1998 | 4 |
4 |
| 1999 | 6 |
6 |
| 2000 | 5 |
5 |
| 2001 | 4 |
4 |
| 2002 | 3 |
3 |
| 2004 | 2 |
2 |
| 2006 | 32 |
32 |
| 2007 | 56 |
56 |
| 2008 | 49 |
49 |
| 2009 | 61 |
61 |
| 2010 | 144 |
144 |
| 2011 | 130 |
130 |
| 2012 | 111 |
111 |
| 2013 | 4 |
5 |
Total: 611 TMDLs; 612 Causes of Impairment Addressed