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- Oklahoma Assessment Summary
- Water Quality by Waterbody Type
- Causes of Impairment
- Probable Sources Contributing to Impairments
- TMDL Alternatives by Cause of Impairment
- 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
2008
2010
Waterbody Changes from Prior Cycle
For More Information:
Oklahoma Assessment Report
State Water Quality Program
Oklahoma Water Quality Assessment Report
Assessed Waters of Oklahoma by Watershed
Search for a waterbody within Oklahoma
NOTE: The data provided in this report may differ from the information provided in the original Oklahoma 2006 Water Quality Integrated Report. This is a result of differences between the Oklahoma State assessment database and the summary data provided in Oklahoma's 2006 Integrated Report, which is available at http://www.deq.state.ok.us/WQDnew/305b_303d/
NOTE: The data provided in this report may differ from the information provided in the original Oklahoma 2006 Water Quality Integrated Report. This is a result of differences between the Oklahoma State assessment database and the summary data provided in Oklahoma's 2006 Integrated Report, which is available at http://www.deq.state.ok.us/WQDnew/305b_303d/
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- Statewide Statistical Surveys
- How's My Waterway Local Search tool
- Pollution Categories Summary Document
Site-specific Targeted Monitoring Summary Results
Oklahoma (2006)
Description of this table| Size of Water | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rivers and Streams (Miles) |
Lakes, Reservoirs, and Ponds (Acres) |
||||||||||||||
| Good Waters | 2,068.5 | 35,666.9 | |||||||||||||
| Previously impaired waters now attaining all uses |
937.7 | 5,964.0 | |||||||||||||
| Threatened Waters | |||||||||||||||
| TMDL completed | |||||||||||||||
| TMDL alternative | |||||||||||||||
| Non-pollutant impairment | |||||||||||||||
| TMDL needed | |||||||||||||||
| Impaired Waters | 9,727.7 | 586,588.7 | |||||||||||||
| TMDL completed | 13.0 | ||||||||||||||
| TMDL alternative | |||||||||||||||
| Non-pollutant impairment | |||||||||||||||
| TMDL needed | 9,714.7 | 586,588.7 | |||||||||||||
| New TMDLs completed | 2,261.4 | .0 | |||||||||||||
| Remaining TMDLs needed | 7,453.3 | 586,588.7 | |||||||||||||
 |
|||||||||||||||
| Total Assessed Waters | 11,796.2 | 622,255.6 | |||||||||||||
| Total Waters | 78,778.0 | 1,041,884.0 | |||||||||||||
| Percent of Waters Assessed | 15.0 | 59.7 | |||||||||||||
Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2006
Site-specific Targeted Monitoring Results
Oklahoma Rivers and Streams 2006
Description of this table
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Site-specific Targeted Monitoring Results
Individual Designated Use Support
Oklahoma Rivers and Streams 2006
* Waters assessed for more than one designated use are included in multiple designated use groups below.
Description of this table| Designated Use | Miles Assessed | Percent Good | Percent Threatened | Percent Impaired |  % Good |
|---|---|---|---|---|---|
 % Threatened |
|||||
 % Impaired |
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| Aesthetic | 4,438.2 | 92.3 | .0 | 7.7 | |
| Agriculture | 10,327.9 | 67.5 | .0 | 32.5 | |
| Emergency Water Supply | 1,435.8 | 100.0 | .0 | .0 | |
| Fish And Wildlife Propagation-Cool Water Aquatic Community Subcategory | 455.8 | 59.4 | .0 | 40.6 | |
| Fish And Wildlife Propagation-Habitat Limited Aquatic Community Subcategory | 180.3 | 7.7 | .0 | 92.3 | |
| Fish And Wildlife Propagation-Trout Fishery (Put And Take) Subcategory | 1.1 | .0 | .0 | 100.0 | |
| Fish And Wildlife Propagation-Warm Water Aquatic Community Subcategory | 6,738.8 | 22.1 | .0 | 77.9 | |
| Fish Consumption | 470.4 | 83.4 | .0 | 16.6 | |
| Hydropower | 459.0 | 100.0 | .0 | .0 | |
| Industrial And Municipal Process And Cooling Water | 6,204.5 | 100.0 | .0 | .0 | |
| Navigation | 184.4 | 100.0 | .0 | .0 | |
| Primary Body Contact Recreation | 7,043.6 | 4.7 | .0 | 95.3 | |
| Public And Private Water Supply | 1,410.4 | 73.6 | .0 | 26.4 | |
| Secondary Body Contact Recreation | 172.5 | 35.6 | .0 | 64.4 | |
Site-specific Targeted Monitoring Results
Causes of Impairment
Oklahoma Rivers and Streams 2006
Description of this table
| Cause of Impairment | Cause of Impairment Group | Miles Threatened or Impaired |
|---|---|---|
| Enterococcus Bacteria | Pathogens | 5,846.5 |
| Turbidity | Turbidity | 3,646.2 |
| Escherichia Coli (E. Coli) | Pathogens | 3,131.6 |
| Fecal Coliform | Pathogens | 2,952.6 |
| Total Dissolved Solids (TDS) | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 2,536.8 |
| Chloride | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 1,903.5 |
| Dissolved Oxygen | Organic Enrichment/Oxygen Depletion | 1,832.6 |
| Sulfates | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 1,660.0 |
| Lead | Metals (other than Mercury) | 817.0 |
| Fishes Bioassessments (Streams) | Cause Unknown - Impaired Biota | 516.5 |
| pH | pH/Acidity/Caustic Conditions | 480.7 |
| Selenium | Metals (other than Mercury) | 282.0 |
| Oil and Grease | Oil and Grease | 206.7 |
| Sedimentation/Siltation | Sediment | 151.3 |
| Phosphorus, Total | Nutrients | 147.1 |
| Copper | Metals (other than Mercury) | 119.4 |
| Cadmium | Metals (other than Mercury) | 116.5 |
| Ammonia, Un-ionized | Ammonia | 106.8 |
| Nitrates | Nutrients | 90.1 |
| Zinc | Metals (other than Mercury) | 65.3 |
| Chlorpyrifos | Pesticides | 42.2 |
| Diazinon | Pesticides | 30.7 |
| Chromium, Total | Metals (other than Mercury) | 27.3 |
| Cause Unknown | Cause Unknown | 16.3 |
| Arsenic | Metals (other than Mercury) | 6.0 |
| Barium | Radiation | 4.4 |
| Dieldrin | Pesticides | 3.9 |
| Silver | Metals (other than Mercury) | 1.6 |
Site-specific Targeted Monitoring Results
Probable Sources
Oklahoma Rivers and Streams 2006
Description of this table
| Probable Source | Probable Source Group | Miles Threatened or Impaired |
|---|---|---|
| Source Unknown | Unknown | 8,877.8 |
| On-Site Treatment Systems (Septic Systems And Similar Decencentralized Systems) | Municipal Discharges/Sewage | 3,479.3 |
| Grazing In Riparian Or Shoreline Zones | Agriculture | 2,949.4 |
| Rangeland Grazing | Agriculture | 2,923.5 |
| Wildlife Other Than Waterfowl | Natural/Wildlife | 2,595.8 |
| Petroleum/Natural Gas Production Activities (Permitted) | Industrial | 2,182.1 |
| Highway/Road/Bridge Runoff (Non-Construction Related) | Urban-Related Runoff/Stormwater | 2,179.2 |
| Non-Irrigated Crop Production | Agriculture | 1,842.1 |
| Agriculture | Agriculture | 1,513.2 |
| Clean Sediments | Hydromodification | 1,233.4 |
| Wastes From Pets | Urban-Related Runoff/Stormwater | 1,177.9 |
| Residential Districts | Urban-Related Runoff/Stormwater | 1,161.8 |
| Municipal Point Source Discharges | Municipal Discharges/Sewage | 973.1 |
| Petroleum/Natural Gas Activities | Resource Extraction | 790.0 |
| Total Retention Domestic Sewage Lagoons | Municipal Discharges/Sewage | 726.0 |
| Impacts From Land Application Of Wastes | Land Application/Waste Sites/Tanks | 373.6 |
| Permitted Runoff From Confined Animal Feeding Operations (Cafos) | Agriculture | 330.5 |
| Municipal (Urbanized High Density Area) | Urban-Related Runoff/Stormwater | 259.6 |
| Industrial Point Source Discharge | Industrial | 132.6 |
| Landfills | Land Application/Waste Sites/Tanks | 113.9 |
| Atmospheric Deposition - Acidity | Atmospheric Deposition | 60.5 |
| Leaking Underground Storage Tanks | Land Application/Waste Sites/Tanks | 36.5 |
| Land Application Of Wastewater Biosolids (Non-Agricultural) | Land Application/Waste Sites/Tanks | 30.7 |
| Mine Tailings | Resource Extraction | 25.7 |
| Natural Sources | Natural/Wildlife | 21.2 |
| Surface Mining | Resource Extraction | 17.4 |
| Spills From Trucks Or Trains | Spills/Dumping | 17.2 |
| Habitat Modification - Other Than Hydromodification | Habitat Alterations (Not Directly Related To Hydromodification) | 13.3 |
| Acid Mine Drainage | Resource Extraction | 7.7 |
| Releases From Waste Sites Or Dumps | Land Application/Waste Sites/Tanks | 6.0 |
| Discharges From Biosolids (Sludge) Storage, Application Or Disposal | Land Application/Waste Sites/Tanks | 2.5 |
Site-specific Targeted Monitoring Results
Oklahoma Lakes, Reservoirs, and Ponds 2006
Description of this table
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Description of this table
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Site-specific Targeted Monitoring Results
Individual Designated Use Support
Oklahoma Lakes, Reservoirs, and Ponds 2006
* Waters assessed for more than one designated use are included in multiple designated use groups below.
Description of this table| Designated Use | Acres Assessed | Percent Good | Percent Threatened | Percent Impaired | % Good |
|---|---|---|---|---|---|
| % Threatened |
|||||
| % Impaired |
|||||
| Aesthetic | 523,459.4 | 47.1 | .0 | 52.9 | |
| Agriculture | 480,798.6 | 96.6 | .0 | 3.4 | |
| Fish And Wildlife Propagation-Warm Water Aquatic Community Subcategory | 594,788.7 | 1.5 | .0 | 98.5 | |
| Hydropower | 245,160.0 | 100.0 | .0 | .0 | |
| Industrial And Municipal Process And Cooling Water | 416,850.6 | 100.0 | .0 | .0 | |
| Navigation | 84,440.0 | 100.0 | .0 | .0 | |
| Primary Body Contact Recreation | 14,509.2 | 74.4 | .0 | 25.6 | |
| Public And Private Water Supply | 229.9 | 100.0 | .0 | .0 | |
Site-specific Targeted Monitoring Results
Causes of Impairment
Oklahoma Lakes, Reservoirs, and Ponds 2006
Description of this table
| Cause of Impairment | Cause of Impairment Group | Acres Threatened or Impaired |
|---|---|---|
| Dissolved Oxygen | Organic Enrichment/Oxygen Depletion | 390,049.0 |
| Turbidity | Turbidity | 385,451.2 |
| Color | Taste, Color and Odor | 260,078.0 |
| pH | pH/Acidity/Caustic Conditions | 30,953.0 |
| Phosphorus, Total | Nutrients | 24,317.0 |
| Total Dissolved Solids (TDS) | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 15,184.0 |
| Chloride | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 8,700.0 |
| Sulfates | Salinity/Total Dissolved Solids/Chlorides/Sulfates | 6,489.0 |
| Enterococcus Bacteria | Pathogens | 3,719.0 |
| Lead | Metals (other than Mercury) | 14.2 |
Site-specific Targeted Monitoring Results
Probable Sources
Oklahoma Lakes, Reservoirs, and Ponds 2006
Description of this table
| Probable Source | Probable Source Group | Acres Threatened or Impaired |
|---|---|---|
| Source Unknown | Unknown | 586,553.7 |
| Agriculture | Agriculture | 4,444.0 |
| Municipal Point Source Discharges | Municipal Discharges/Sewage | 4,444.0 |
| Petroleum/Natural Gas Activities | Resource Extraction | 35.0 |
| Silviculture Harvesting | Silviculture (Forestry) | 25.0 |
Oklahoma Causes of Impairment for Reporting Year 2006
Description of this table
| NOTE: Click on the underlined Cause of Impairment Group to see a list of specific state causes of impairment making up the Cause of Impairment Group. See also Pollution categories summary document (PDF) (20 pp, 557K, About PDF) for brief, non-technical descriptions of general cause categories. | |||||||||||||||
| Cause of Impairment Group | Size of Assessed Waters with Listed Causes of Impairment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rivers and Streams (Miles) |
Lakes, Reservoirs, and Ponds (Acres) |
||||||||||||||
| Ammonia | 106.8 | ||||||||||||||
| Cause Unknown | 16.3 | ||||||||||||||
| Cause Unknown - Impaired Biota | 516.5 | ||||||||||||||
| Metals (other than Mercury) | 1,156.6 | 14.2 | |||||||||||||
| Nutrients | 237.2 | 24,317.0 | |||||||||||||
| Oil and Grease | 206.7 | ||||||||||||||
| Organic Enrichment/Oxygen Depletion | 1,832.6 | 390,049.0 | |||||||||||||
| Pathogens | 6,790.8 | 3,719.0 | |||||||||||||
| Pesticides | 76.8 | ||||||||||||||
| pH/Acidity/Caustic Conditions | 480.7 | 30,953.0 | |||||||||||||
| Radiation | 4.4 | ||||||||||||||
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 3,364.1 | 16,114.0 | |||||||||||||
| Sediment | 151.3 | ||||||||||||||
| Taste, Color and Odor | 260,078.0 | ||||||||||||||
| Turbidity | 3,646.2 | 385,451.2 | |||||||||||||
Oklahoma Probable Sources Contributing to Impairments
for Reporting Year 2006
Description of this table
| NOTE: Click on the underlined Probable Source Group to see a list of specific state Probable Sources making up the Probable Source Group. | |||||||||||||||
| Probable Source Group | Size of Assessed Waters with Probable Sources of Impairments | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rivers and Streams (Miles) |
Lakes, Reservoirs, and Ponds (Acres) |
||||||||||||||
| Agriculture | 4,065.5 | 4,444.0 | |||||||||||||
| Atmospheric Deposition | 60.5 | ||||||||||||||
| Habitat Alterations (Not Directly Related To Hydromodification) | 13.3 | ||||||||||||||
| Hydromodification | 1,233.4 | ||||||||||||||
| Industrial | 2,298.6 | ||||||||||||||
| Land Application/Waste Sites/Tanks | 543.7 | ||||||||||||||
| Municipal Discharges/Sewage | 3,549.5 | 4,444.0 | |||||||||||||
| Natural/Wildlife | 2,617.0 | ||||||||||||||
| Resource Extraction | 823.4 | 35.0 | |||||||||||||
| Silviculture (Forestry) | 25.0 | ||||||||||||||
| Spills/Dumping | 17.2 | ||||||||||||||
| Unknown | 8,877.8 | 586,553.7 | |||||||||||||
| Urban-Related Runoff/Stormwater | 3,010.5 | ||||||||||||||
Oklahoma TMDL Alternatives by Cause of Impairment 2006
No TMDL Alternatives reported.
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 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 |
|---|---|
| Pathogens | 549 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 399 |
| Turbidity | 233 |
| Organic Enrichment/Oxygen Depletion | 207 |
| Metals (other than Mercury) | 75 |
| Taste, Color and Odor | 58 |
| pH/Acidity/Caustic Conditions | 44 |
| Nutrients | 20 |
| Cause Unknown - Impaired Biota | 20 |
| Oil and Grease | 16 |
| Pesticides | 7 |
| Sediment | 5 |
| Ammonia | 5 |
| Cause Unknown | 1 |
| Radiation | 1 |
Total: 1,640 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 |  217 |
218 |
| Fecal Coliform | 136 |
136 |
| Escherichia Coli (E. Coli) | 103 |
103 |
| Total Suspended Solids (TSS) | 89 |
89 |
| 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: 615 TMDLs; 616 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 | 115 |
115 |
| 2013 | 4 |
5 |
Total: 615 TMDLs; 616 Causes of Impairment Addressed