Oklahoma Water Quality Assessment Report

Assessed Waters of Oklahoma by Watershed

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Features

Site-specific Targeted Monitoring Summary Results

Oklahoma (2010)

	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
	Size of Water
Good Waters	2,297.8	25,034.0
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	10,175.6	579,559.5
TMDL completed	649.4
TMDL alternative
Non-pollutant impairment
TMDL needed	9,526.2	579,559.5
New TMDLs completed	1,105.7	.0
Remaining TMDLs needed	8,420.4	579,559.5

Total Assessed Waters	12,473.4	604,593.5
Total Waters	78,778.0	1,041,884.0
Percent of Waters Assessed	15.8	58.0

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2010

Site-specific Targeted Monitoring Results

Oklahoma Rivers and Streams 2010

Description of this table

Assessed Status	Miles

Assessed	12,473.4
Unassessed	66,304.6
Total Miles	78,778.0

Description of this table

Attainment Status	Miles

Good	2,297.8
Threatened	.0
Impaired	10,175.6
Total Miles Assessed	12,473.4

Description of this table

TMDL Development Status	Miles

All TMDLs completed	1,755.1
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	8,420.4
Total Threatened and Impaired	10,175.6

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Oklahoma Rivers and Streams 2010

* 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
Aesthetic	6,159.7	81.5	.0	18.5
Agriculture	10,962.7	69.5	.0	30.5
Emergency Water Supply	1,572.4	100.0	.0	.0
Fish And Wildlife Propagation-Cool Water Aquatic Community Subcategory	872.7	46.7	.0	53.3
Fish And Wildlife Propagation-Habitat Limited Aquatic Community Subcategory	164.3	34.9	.0	65.1
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	8,078.1	31.6	.0	68.4
Fish Consumption	3,127.9	18.1	.0	81.9
Hqw-High Quality Water	86.8	100.0	.0	.0
Navigation	213.5	100.0	.0	.0
Primary Body Contact Recreation	7,168.9	6.4	.0	93.6
Public And Private Water Supply	1,809.2	79.8	.0	20.2
Secondary Body Contact Recreation	243.5	32.3	.0	67.7

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Site-specific Targeted Monitoring Results

Causes of Impairment
Oklahoma Rivers and Streams 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Enterococcus Bacteria	Pathogens	6,256.6
Escherichia Coli (E. Coli)	Pathogens	3,372.4
Turbidity	Turbidity	3,293.6
Fecal Coliform	Pathogens	2,672.9
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	2,135.3
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	2,120.8
Thallium	Metals (other than Mercury)	2,072.8
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	1,967.8
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	1,848.9
Lead	Metals (other than Mercury)	1,593.1
Sedimentation/Siltation	Sediment	928.1
Fish Bioassessments	Cause Unknown - Impaired Biota	911.9
pH	pH/Acidity/Caustic Conditions	665.3
Selenium	Metals (other than Mercury)	501.1
Oil and Grease	Oil and Grease	281.1
Copper	Metals (other than Mercury)	156.1
Cadmium	Metals (other than Mercury)	150.6
Phosphorus, Total	Nutrients	146.4
Ammonia, Un-ionized	Ammonia	101.9
Nitrates	Nutrients	84.7
Zinc	Metals (other than Mercury)	62.7
Chlorpyrifos	Pesticides	42.0
Toxaphene	Pesticides	30.0
DDT	Pesticides	30.0
Silver	Metals (other than Mercury)	27.4
Diazinon	Pesticides	10.9
Dieldrin	Pesticides	10.4
Chromium, Total	Metals (other than Mercury)	9.9
Arsenic	Metals (other than Mercury)	6.0
Barium	Radiation	4.4

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Site-specific Targeted Monitoring Results

Probable Sources
Oklahoma Rivers and Streams 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Source Unknown	Unknown	9,664.6
Grazing In Riparian Or Shoreline Zones	Agriculture	6,946.6
Rangeland Grazing	Agriculture	6,714.8
Wildlife Other Than Waterfowl	Natural/Wildlife	6,424.3
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	6,291.7
Wastes From Pets	Urban-Related Runoff/Stormwater	4,770.4
Residential Districts	Urban-Related Runoff/Stormwater	4,443.5
Municipal Point Source Discharges	Municipal Discharges/Sewage	3,847.3
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	3,721.6
Non-Irrigated Crop Production	Agriculture	3,596.2
Impacts From Land Application Of Wastes	Land Application/Waste Sites/Tanks	2,549.2
Atmospheric Deposition - Toxics	Atmospheric Deposition	2,087.4
Petroleum/Natural Gas Activities	Resource Extraction	1,976.0
Total Retention Domestic Sewage Lagoons	Municipal Discharges/Sewage	1,179.0
Agriculture	Agriculture	1,043.7
Animal Feeding Operations (Nps)	Agriculture	850.1
Permitted Runoff From Confined Animal Feeding Operations (Cafos)	Agriculture	783.9
Clean Sediments	Hydromodification	638.8
Other Spill Related Impacts	Spills/Dumping	507.2
Industrial Point Source Discharge	Industrial	350.2
Natural Sources	Natural/Wildlife	287.8
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	264.5
Landfills	Land Application/Waste Sites/Tanks	250.5
Mine Tailings	Resource Extraction	180.0
Municipal (Urbanized High Density Area)	Urban-Related Runoff/Stormwater	169.7
Sources Outside State Jurisdiction Or Borders	Other	162.8
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	154.6
Atmospheric Deposition - Acidity	Atmospheric Deposition	145.9
Discharges From Municipal Separate Storm Sewer Systems (Ms4)	Urban-Related Runoff/Stormwater	115.8
Silviculture Harvesting	Silviculture (Forestry)	66.8
Dredging (E.G., For Navigation Channels)	Hydromodification	62.3
Land Application Of Wastewater Biosolids (Non-Agricultural)	Land Application/Waste Sites/Tanks	46.4
Leaking Underground Storage Tanks	Land Application/Waste Sites/Tanks	27.9
Spills From Trucks Or Trains	Spills/Dumping	17.2
Discharges From Biosolids (Sludge) Storage, Application Or Disposal	Land Application/Waste Sites/Tanks	17.1
Releases From Waste Sites Or Dumps	Land Application/Waste Sites/Tanks	16.8
Surface Mining	Resource Extraction	14.4
Cercla Npl (Superfund) Sites	Legacy/Historical Pollutants	11.7
Irrigated Crop Production	Agriculture	10.4
Acid Mine Drainage	Resource Extraction	7.7

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Site-specific Targeted Monitoring Results

Oklahoma Lakes, Reservoirs, and Ponds 2010

Description of this table

Assessed Status	Acres

Assessed	604,593.5
Unassessed	437,290.5
Total Acres	1,041,884.0

Description of this table

Attainment Status	Acres

Good	25,034.0
Threatened	.0
Impaired	579,559.5
Total Acres Assessed	604,593.5

Description of this table

TMDL Development Status	Acres

All TMDLs completed	.0
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	579,559.5
Total Threatened and Impaired	579,559.5

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Oklahoma Lakes, Reservoirs, and Ponds 2010

* 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	511,624.5	72.7	.0	27.3
Agriculture	495,970.5	94.8	.0	5.2
Emergency Water Supply	12,950.0	100.0	.0	.0
Fish And Wildlife Propagation-Warm Water Aquatic Community Subcategory	587,142.5	1.9	.0	98.1
Fish Consumption	46,517.0	.0	.0	100.0
Navigation	84,440.0	100.0	.0	.0
Primary Body Contact Recreation	251,860.5	60.0	.0	40.0
Public And Private Water Supply	215,729.5	68.2	.0	31.8

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Site-specific Targeted Monitoring Results

Causes of Impairment
Oklahoma Lakes, Reservoirs, and Ponds 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	396,260.5
Turbidity	Turbidity	382,541.0
Color	Taste, Color and Odor	126,294.0
Enterococcus Bacteria	Pathogens	95,635.5
Chlorophyll-A	Algal Growth	68,540.5
Lead	Metals (other than Mercury)	46,967.0
pH	pH/Acidity/Caustic Conditions	30,705.0
Phosphorus, Total	Nutrients	20,907.0
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	17,610.0
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	7,176.0
Escherichia Coli (E. Coli)	Pathogens	6,346.0
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	6,325.0
Fecal Coliform	Pathogens	260.0

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Site-specific Targeted Monitoring Results

Probable Sources
Oklahoma Lakes, Reservoirs, and Ponds 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Source Unknown	Unknown	579,507.5
Mine Tailings	Resource Extraction	46,517.0
Wildlife Other Than Waterfowl	Natural/Wildlife	37,183.0
Rangeland Grazing	Agriculture	37,183.0
Grazing In Riparian Or Shoreline Zones	Agriculture	32,153.0
Wastes From Pets	Urban-Related Runoff/Stormwater	20,553.0
Natural Sources	Natural/Wildlife	18,512.0
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	12,915.0
Impacts From Land Application Of Wastes	Land Application/Waste Sites/Tanks	9,474.0
Animal Feeding Operations (Nps)	Agriculture	9,474.0
Sources Outside State Jurisdiction Or Borders	Other	9,474.0
Petroleum/Natural Gas Activities	Resource Extraction	35.0
Silviculture Harvesting	Silviculture (Forestry)	25.0

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Oklahoma Causes of Impairment for Reporting Year 2010

Description of this table

Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
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	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Algal Growth		68,540.5
Ammonia	101.9
Cause Unknown - Impaired Biota	911.9
Metals (other than Mercury)	2,861.4	46,967.0
Nutrients	231.1	20,907.0
Oil and Grease	281.1
Organic Enrichment/Oxygen Depletion	2,120.8	396,260.5
Pathogens	6,875.8	100,839.5
Pesticides	93.3
pH/Acidity/Caustic Conditions	665.3	30,705.0
Radiation	4.4
Salinity/Total Dissolved Solids/Chlorides/Sulfates	3,348.0	25,711.0
Sediment	928.1
Taste, Color and Odor		126,294.0
Turbidity	3,293.6	382,541.0

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Oklahoma Probable Sources Contributing to Impairments
for Reporting Year 2010

Description of this table

Probable Source Group	Size of Assessed Waters with Probable Sources of Impairments
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	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Agriculture	7,834.9	37,183.0
Atmospheric Deposition	2,233.3
Hydromodification	855.6
Industrial	350.2
Land Application/Waste Sites/Tanks	2,801.7	9,474.0
Legacy/Historical Pollutants	11.7
Municipal Discharges/Sewage	7,411.1	12,915.0
Natural/Wildlife	6,523.3	55,695.0
Other	162.8	9,474.0
Resource Extraction	2,323.5	46,552.0
Silviculture (Forestry)	66.8	25.0
Spills/Dumping	524.4
Unknown	9,664.6	579,507.5
Urban-Related Runoff/Stormwater	6,628.9	20,553.0

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Oklahoma TMDL Alternatives by Cause of Impairment 2010

No TMDL Alternatives reported.

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Oklahoma Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards

Description of this table

Year Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
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.
2004	1	1
2005	24	65
2006	1	3
2007	4	12
2009	17	22
2012	23	47

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Oklahoma Causes of Impairment for 303(d) Listed Waters

Description of this table

Cause of Impairment Group Name	Number of Causes of Impairment Reported
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.
Salinity/Total Dissolved Solids/Chlorides/Sulfates	415
Pathogens	376
Organic Enrichment/Oxygen Depletion	231
Turbidity	221
Metals (other than Mercury)	176
pH/Acidity/Caustic Conditions	53
Cause Unknown - Impaired Biota	38
Sediment	31
Taste, Color and Odor	28
Algal Growth	26
Oil and Grease	23
Nutrients	20
Pesticides	13
Ammonia	5
Radiation	1

Total: 1,657 Causes of Impairment

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Oklahoma Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

Description of this table

Pollutant	Number of TMDLs	Number of Causes of Impairment Addressed
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.
Enterococcus Bacteria	218	218
Fecal Coliform	136	136
Escherichia Coli (E. Coli)	104	104
Total Suspended Solids (TSS)	92	92
Turbidity	34	34
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: 622 TMDLs; 622 Causes of Impairment Addressed

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Oklahoma Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.

Description of this table

Fiscal Year	Number of TMDLs	Number of Causes of Impairment Addressed
NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
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	15	15

Total: 622 TMDLs; 622 Causes of Impairment Addressed

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TMDL Document Search

Full Text Search of TMDL Documents

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