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Oklahoma Assessment Summary for Reporting Year 2008

Description of this table

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Good Waters	2,042.8	22,052.0
Previously impaired waters       now attaining all uses	195.3
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	10,372.9	600,124.5
TMDL completed	468.9
TMDL alternative
Non-pollutant impairment
TMDL needed	9,904.1	600,124.5
New TMDLs completed	187.9	.0
Remaining TMDLs needed	9,716.2	600,124.5
Total Assessed Waters	12,415.7	622,176.5
Total Waters	78,778.0	1,041,884.0
Percent of Waters Assessed	15.8	59.7

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2008

Oklahoma Assessed Waters
Summary of Water Quality Attainment for Rivers and Streams
Reporting Year 2008

Description of this table Assessed Status Miles Assessed 12,415.7 Unassessed 66,362.3 Total Miles 78,778.0

Description of this table Attainment Status Miles Good 2,042.8 Threatened .0 Impaired 10,372.9 Total Miles Assessed 12,415.7

Description of this table TMDL Development Status Miles All TMDLs completed 656.8 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 9,716.2 Total Threatened and Impaired 10,372.9

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Oklahoma Assessed Waters
Designated Use Support for Rivers and Streams
Reporting Year 2008*

* 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	5,257.0	90.5	.0	9.5
Agriculture	10,907.5	66.5	.0	33.5
Emergency Water Supply	1,520.5	100.0	.0	.0
Fish And Wildlife Propagation-Cool Water Aquatic Community Subcategory	828.9	48.4	.0	51.6
Fish And Wildlife Propagation-Habitat Limited Aquatic Community Subcategory	190.4	12.7	.0	87.3
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	7,738.3	24.6	.0	75.4
Fish Consumption	2,832.2	61.7	.0	38.3
Hqw-High Quality Water	86.8	100.0	.0	.0
Navigation	213.5	100.0	.0	.0
Primary Body Contact Recreation	8,455.5	8.9	.0	91.1
Public And Private Water Supply	1,463.1	73.0	.0	27.0
Secondary Body Contact Recreation	286.4	43.0	.0	57.0

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Oklahoma Causes of Impairment
for Threatened and Impaired Rivers and Streams
Reporting Year 2008

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Enterococcus Bacteria	Pathogens	6,977.5
Turbidity	Turbidity	4,013.6
Escherichia Coli (E. Coli)	Pathogens	3,495.0
Fecal Coliform	Pathogens	3,094.0
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	2,546.8
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	2,299.4
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	2,137.0
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	1,981.8
Lead	Metals (other than Mercury)	1,437.1
pH	pH/Acidity/Caustic Conditions	762.2
Fish Bioassessments	Cause Unknown - Impaired Biota	633.0
Oil and Grease	Oil and Grease	544.9
Selenium	Metals (other than Mercury)	273.1
Phosphorus, Total	Nutrients	160.2
Sedimentation/Siltation	Sediment	150.7
Nitrates	Nutrients	117.7
Ammonia, Un-ionized	Ammonia	115.5
Cadmium	Metals (other than Mercury)	100.6
Copper	Metals (other than Mercury)	95.3
Zinc	Metals (other than Mercury)	83.4
Chlorpyrifos	Pesticides	42.0
Chromium, Total	Metals (other than Mercury)	42.0
Diazinon	Pesticides	28.9
DDT	Pesticides	18.6
Toxaphene	Pesticides	18.6
Arsenic	Metals (other than Mercury)	6.0
Barium	Radiation	4.4
Total Coliform	Pathogens	4.2
Dieldrin	Pesticides	3.9
Silver	Metals (other than Mercury)	2.2

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Oklahoma Probable Sources of Impairments
for Threatened and Impaired Rivers and Streams
Reporting Year 2008

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Source Unknown	Unknown	9,897.8
Grazing In Riparian Or Shoreline Zones	Agriculture	7,091.3
Rangeland Grazing	Agriculture	6,904.6
Wildlife Other Than Waterfowl	Natural/Wildlife	6,886.7
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Dishcarges/Sewage	6,740.2
Wastes From Pets	Urban-Related Runoff/Stormwater	4,872.8
Residential Districts	Urban-Related Runoff/Stormwater	4,486.3
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	4,111.0
Non-Irrigated Crop Production	Agriculture	4,005.6
Municipal Point Source Discharges	Municipal Dishcarges/Sewage	3,274.4
Impacts From Land Application Of Wastes	Land Application/Waste Sites/Tanks	2,513.3
Petroleum/Natural Gas Activities	Resource Extraction	2,206.5
Total Retention Domestic Sewage Lagoons	Municipal Dishcarges/Sewage	1,244.7
Clean Sediments	Hydromodification	1,094.2
Agriculture	Agriculture	1,091.2
Other Spill Related Impacts	Spills/Dumping	676.4
Permitted Runoff From Confined Animal Feeding Operations (Cafos)	Agriculture	618.2
Animal Feeding Operations (Nps)	Agriculture	509.9
Industrial Point Source Discharge	Industrial	464.6
Atmospheric Deposition - Acidity	Atmospheric Deposition	380.2
Mine Tailings	Resource Extraction	236.0
Sources Outside State Jurisdiction Or Borders	Other	176.6
Municipal (Urbanized High Density Area)	Urban-Related Runoff/Stormwater	169.7
Landfills	Land Application/Waste Sites/Tanks	166.6
Discharges From Municipal Separate Storm Sewer Systems (Ms4)	Urban-Related Runoff/Stormwater	126.9
Silviculture Harvesting	Silviculture (Forestry)	94.9
Dredging (E.G., For Navigation Channels)	Hydromodification	66.7
Land Application Of Wastewater Biosolids (Non-Agricultural)	Land Application/Waste Sites/Tanks	46.4
Releases From Waste Sites Or Dumps	Land Application/Waste Sites/Tanks	33.2
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	30.4
Leaking Underground Storage Tanks	Land Application/Waste Sites/Tanks	27.9
Natural Sources	Natural/Wildlife	21.2
Spills From Trucks Or Trains	Spills/Dumping	17.2
Discharges From Biosolids (Sludge) Storage, Application Or Disposal	Land Application/Waste Sites/Tanks	17.1
Surface Mining	Resource Extraction	14.4
Cercla Npl (Superfund) Sites	Legacy/Historical Pollutants	11.7
Acid Mine Drainage	Resource Extraction	7.7

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Oklahoma Assessed Waters
Summary of Water Quality Attainment for Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table Assessed Status Acres Assessed 622,176.5 Unassessed 419,707.5 Total Acres 1,041,884.0

Description of this table Attainment Status Acres Good 22,052.0 Threatened .0 Impaired 600,124.5 Total Acres Assessed 622,176.5

Description of this table TMDL Development Status Acres All TMDLs completed .0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 600,124.5 Total Threatened and Impaired 600,124.5

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Oklahoma Assessed Waters
Designated Use Support for Lakes, Reservoirs, and Ponds
Reporting Year 2008*

* 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	389,038.5	71.8	.0	28.2
Agriculture	480,560.5	96.7	.0	3.3
Fish And Wildlife Propagation-Warm Water Aquatic Community Subcategory	594,774.5	1.5	.0	98.5
Navigation	84,440.0	100.0	.0	.0
Primary Body Contact Recreation	161,456.0	86.5	.0	13.5
Public And Private Water Supply	66,386.5	.2	.0	99.8

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Oklahoma Causes of Impairment
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	389,498.0
Turbidity	Turbidity	370,016.0
Color	Taste, Color and Odor	92,803.0
Chlorophyll-A	Algal Growth	66,221.5
pH	pH/Acidity/Caustic Conditions	30,953.0
Phosphorus, Total	Nutrients	24,317.0
Enterococcus Bacteria	Pathogens	21,780.0
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	15,015.0
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	8,700.0
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	6,330.0

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Oklahoma Probable Sources of Impairments
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Source Unknown	Unknown	600,089.5
Rangeland Grazing	Agriculture	40,593.0
Wildlife Other Than Waterfowl	Natural/Wildlife	40,593.0
Grazing In Riparian Or Shoreline Zones	Agriculture	32,153.0
Wastes From Pets	Urban-Related Runoff/Stormwater	20,553.0
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Dishcarges/Sewage	12,915.0
Animal Feeding Operations (Nps)	Agriculture	12,884.0
Sources Outside State Jurisdiction Or Borders	Other	12,884.0
Impacts From Land Application Of Wastes	Land Application/Waste Sites/Tanks	12,884.0
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 2008

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.
Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Algal Growth		66,221.5
Ammonia	115.5
Cause Unknown - Impaired Biota	633.0
Metals (other than Mercury)	1,726.6
Nutrients	278.0	24,317.0
Oil and Grease	544.9
Organic Enrichment/Oxygen Depletion	2,546.8	389,498.0
Pathogens	7,840.9	21,780.0
Pesticides	93.4
pH/Acidity/Caustic Conditions	762.2	30,953.0
Radiation	4.4
Salinity/Total Dissolved Solids/Chlorides/Sulfates	3,649.7	15,955.0
Sediment	150.7
Taste, Color and Odor		92,803.0
Turbidity	4,013.6	370,016.0

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Oklahoma Probable Sources Contributing to Impairments
for Reporting Year 2008

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	7,971.9	40,593.0
Atmospheric Deposition	380.2
Hydromodification	1,161.0
Industrial	464.6
Land Application/Waste Sites/Tanks	2,787.6	12,884.0
Legacy/Historical Pollutants	11.7
Municipal Dishcarges/Sewage	7,677.7	12,915.0
Natural/Wildlife	6,907.9	40,593.0
Other	176.6	12,884.0
Resource Extraction	2,480.6	35.0
Silviculture (Forestry)	94.9	25.0
Spills/Dumping	693.6
Unknown	9,897.8	600,089.5
Urban-Related Runoff/Stormwater	6,573.8	20,553.0

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Oklahoma TMDL Alternatives by Cause of Impairment 2008

No TMDL Alternatives reported.

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Oklahoma Previously Impaired Waters Now Attaining All Uses

Description of this table

NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those waters now attaining all uses.
Cycle Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
2004	1	1
2005	24	57
2006	1	3
2007	4	12

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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	534
Salinity/Total Dissolved Solids/Chlorides/Sulfates	425
Turbidity	249
Organic Enrichment/Oxygen Depletion	246
Metals (other than Mercury)	97
pH/Acidity/Caustic Conditions	58
Oil and Grease	33
Cause Unknown - Impaired Biota	28
Taste, Color and Odor	26
Algal Growth	24
Nutrients	21
Pesticides	9
Ammonia	6
Sediment	5
Radiation	1

Total: 1,762 Causes of Impairment

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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
Fecal Coliform	92	92
Enterococcus Bacteria	73	73
Escherichia Coli (E. Coli)	27	27
Dissolved Oxygen	15	15
Organic Enrichment/Low Dissolved Oxygen	7	7
Ammonia	3	3
Turbidity	3	3
Chlorine, Residual (Chlorine Demand)	1	1
Oxygen Demand	1	1
Phosphorus	1	1

Total: 223 TMDLs; 223 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

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	50	50
2009	61	61

Total: 223 TMDLs; 223 Causes of Impairment Addressed

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