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Tennessee Assessment Summary for Reporting Year 2008

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Good Waters	19,258.6	383,880.0
Previously impaired waters       now attaining all uses	23.8
Threatened Waters	46.9
TMDL completed
TMDL alternative
Non-pollutant impairment	16.9
TMDL needed	30.0
Impaired Waters	11,777.5	181,925.4
TMDL completed	2,694.7	6,259.0
TMDL alternative
Non-pollutant impairment	119.6
TMDL needed	8,963.3	175,666.4
New TMDLs completed	813.2	.0
Remaining TMDLs needed	8,150.1	175,666.4
Total Assessed Waters	31,083.0	565,805.4
Total Waters	61,075.0	538,060.0
Percent of Waters Assessed	50.9	105.2

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

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

Description of this table Assessed Status Miles Assessed 31,083.0 Unassessed 29,992.0 Total Miles 61,075.0

Description of this table Attainment Status Miles Good 19,258.6 Threatened 46.9 Impaired 11,777.5 Total Miles Assessed 31,083.0

Description of this table TMDL Development Status Miles All TMDLs completed 3,507.8 TMDL alternative .0 Non-pollutant impairment 136.5 TMDL needed 8,180.1 Total Threatened and Impaired 11,824.4

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Tennessee 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.

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Domestic Water Supply	3,381.3	99.3	.0	.7
Fish And Aquatic Life	30,467.7	69.7	.2	30.1
Industrial Water Supply	3,225.3	100.0	.0	.0
Irrigation	30,936.9	100.0	.0	.0
Livestock Watering And Wildlife	30,961.5	100.0	.0	.0
Naturally Reproducing Trout Stream	275.3	100.0	.0	.0
Recreation	15,401.2	60.6	.0	39.4

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

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Escherichia Coli (E. Coli)	Pathogens	5,673.7
Sedimentation/Siltation	Sediment	5,525.8
Physical Substrate Habitat Alterations	Habitat Alterations	3,892.6
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	1,794.4
Alteration in Stream-Side or Littoral Vegetative Covers	Habitat Alterations	1,365.0
Nitrates	Nutrients	926.1
Phosphate	Nutrients	877.0
Other Anthropogenic Substrate Alterations	Habitat Alterations	488.8
Nitrate/Nitrite (Nitrite + Nitrate as N)	Nutrients	444.7
pH	pH/Acidity/Caustic Conditions	409.6
Low Flow Alterations	Flow Alteration(s)	378.5
Phosphorus, Total	Nutrients	340.8
Nutrient/Eutrophication Biological Indicators	Nutrients	326.8
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	299.3
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	256.1
Mercury	Mercury	253.0
Chlordane	Pesticides	247.7
Iron	Metals (other than Mercury)	224.4
Cause Unknown	Cause Unknown	164.4
Manganese	Metals (other than Mercury)	160.0
Temperature, Water	Temperature	104.6
Lead	Metals (other than Mercury)	95.5
Arsenic	Metals (other than Mercury)	84.0
RDX (Hexahydro-1,3,5-Trinitro-1,2,5-Triazine	Toxic Organics	62.9
Oil and Grease	Oil and Grease	56.1
Copper	Metals (other than Mercury)	51.0
Zinc	Metals (other than Mercury)	50.8
Ammonia, Un-ionized	Ammonia	43.5
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	31.3
Polycyclic Aromatic Hydrocarbons (PAHs) (Aquatic Ecosystems)	Toxic Organics	31.0
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	22.4
Solids (Suspended/Bedload)	Sediment	16.9
Strontium	Metals (other than Mercury)	7.3
Creosote	Toxic Organics	7.1
Odor Threshold Number	Taste, Color and Odor	6.7
Sulfide-Hydrogen Sulfide	Toxic Inorganics	6.7
Cesium	Radiation	5.3
Color	Taste, Color and Odor	5.0
Whole Effluent Toxicity (WET)	Total Toxics	4.3
Chromium, Hexavalent	Metals (other than Mercury)	3.8
Chlorine	Chlorine	3.3
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	1.0
Toluene	Toxic Organics	.5

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

Probable Source	Probable Source Group	Miles Threatened or Impaired
Grazing In Riparian Or Shoreline Zones	Agriculture	4,635.8
Channelization	Hydromodification	3,084.7
Non-Irrigated Crop Production	Agriculture	2,306.5
Discharges From Municipal Separate Storm Sewer Systems (Ms4)	Urban-Related Runoff/Stormwater	2,066.6
Source Unknown	Unknown	1,010.4
Site Clearance (Land Development Or Redevelopment)	Construction	939.6
Municipal Point Source Discharges	Municipal Dishcarges/Sewage	573.2
Sanitary Sewer Overflows (Collection System Failures)	Municipal Dishcarges/Sewage	533.7
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	454.0
Upstream Impoundments (E.G., Pl-566 Nrcs Structures)	Hydromodification	414.0
Municipal (Urbanized High Density Area)	Urban-Related Runoff/Stormwater	343.0
Contaminated Sediments	Legacy/Historical Pollutants	336.0
Unrestricted Cattle Access	Agriculture	312.1
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Dishcarges/Sewage	292.7
Sources Outside State Jurisdiction Or Borders	Other	220.7
Animal Feeding Operations (Nps)	Agriculture	210.4
Dredging (E.G., For Navigation Channels)	Hydromodification	207.3
Atmospheric Deposition - Toxics	Atmospheric Deposition	174.6
Industrial Point Source Discharge	Industrial	170.7
Rcra Hazardous Waste Sites	Industrial	120.1
Loss Of Riparian Habitat	Habitat Alterations (Not Directly Related To Hydromodification)	118.6
Sand/Gravel/Rock Mining Or Quarries	Resource Extraction	113.3
Highways, Roads, Bridges, Infrastructure (New Construction)	Construction	104.8
Streambank Modifications/Destabilization	Hydromodification	97.5
Coal Mining Discharges (Permitted)	Resource Extraction	59.3
Silviculture Harvesting	Silviculture (Forestry)	52.3
Landfills	Land Application/Waste Sites/Tanks	47.2
Mill Tailings	Industrial	35.4
Nps Pollution From Military Base Facilities (Other Than Port Facilities)	Military Bases	35.2
Mine Tailings	Resource Extraction	35.1
Cercla Npl (Superfund) Sites	Legacy/Historical Pollutants	30.3
Irrigated Crop Production	Agriculture	29.3
Dredge Mining	Resource Extraction	26.7
Industrial/Commercial Site Stormwater Discharge (Permitted)	Urban-Related Runoff/Stormwater	25.9
Channel Erosion/Incision From Upstream Hydromodifications	Hydromodification	24.8
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	24.5
Permitted Runoff From Confined Animal Feeding Operations (Cafos)	Agriculture	21.6
Package Plant Or Other Permitted Small Flows Discharges	Municipal Dishcarges/Sewage	16.7
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	16.7
Specialty Crop Production	Agriculture	13.9
Other Spill Related Impacts	Spills/Dumping	13.3
Dairies (Outside Milk Parlor Areas)	Agriculture	12.4
Atmospheric Deposition - Acidity	Atmospheric Deposition	12.3
Combined Sewer Overflows	Municipal Dishcarges/Sewage	9.8
Land Application Of Wastewater Biosolids (Non-Agricultural)	Land Application/Waste Sites/Tanks	9.4
Subsurface (Hardrock) Mining	Resource Extraction	9.1
Leaking Underground Storage Tanks	Land Application/Waste Sites/Tanks	8.9
Livestock (Grazing Or Feeding Operations)	Agriculture	6.5
Surface Mining	Resource Extraction	5.0
Illicit Connections/Hook-Ups To Storm Sewers	Municipal Dishcarges/Sewage	3.9
Off-Road Vehicles	Recreation And Tourism (Non-Boating)	3.9
Aquaculture (Permitted)	Aquaculture	2.7
Forest Roads (Road Construction And Use)	Silviculture (Forestry)	2.1
Petroleum/Natural Gas Production Activities (Permitted)	Industrial	1.4
Manure Runoff	Agriculture	1.1
Above Ground Storage Tank Leaks (Tank Farms)	Spills/Dumping	.5
Golf Courses	Recreation And Tourism (Non-Boating)	.5

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

Description of this table Assessed Status Acres Assessed 565,805.4 Unassessed -27,745.4 Total Acres 538,060.0

Description of this table Attainment Status Acres Good 383,880.0 Threatened .0 Impaired 181,925.4 Total Acres Assessed 565,805.4

Description of this table TMDL Development Status Acres All TMDLs completed 6,259.0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 175,666.4 Total Threatened and Impaired 181,925.4

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Tennessee 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.

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Domestic Water Supply	526,863.7	100.0	.0	.0
Fish And Aquatic Life	563,904.4	92.8	.0	7.2
Industrial Water Supply	428,976.4	100.0	.0	.0
Irrigation	563,904.4	100.0	.0	.0
Livestock Watering And Wildlife	561,795.4	100.0	.0	.0
Navigation	1,971.0	100.0	.0	.0
Recreation	565,125.4	70.2	.0	29.8

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

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Polychlorinated Biphenyls (PCBs)	Polychlorinated Biphenyls (PCBs)	95,595.7
Mercury	Mercury	66,461.0
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	37,978.7
Temperature, Water	Temperature	20,459.0
Sedimentation/Siltation	Sediment	18,174.7
Nutrient/Eutrophication Biological Indicators	Nutrients	15,635.7
Chlordane	Pesticides	14,030.7
Low Flow Alterations	Flow Alteration(s)	11,444.0
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	10,370.0
Aquatic Plants - Native	Nuisance Native Species	4,550.0
Iron	Metals (other than Mercury)	2,254.0
Copper	Metals (other than Mercury)	2,254.0
Zinc	Metals (other than Mercury)	2,254.0
Escherichia Coli (E. Coli)	Pathogens	2,044.0
Taste and Odor	Taste, Color and Odor	45.0

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

Probable Source	Probable Source Group	Acres Threatened or Impaired
Contaminated Sediments	Legacy/Historical Pollutants	97,849.7
Atmospheric Deposition - Toxics	Atmospheric Deposition	66,320.0
Industrial Thermal Discharges	Industrial	20,459.0
Non-Irrigated Crop Production	Agriculture	15,587.0
Internal Nutrient Recycling	Natural/Wildlife	15,500.0
Site Clearance (Land Development Or Redevelopment)	Construction	10,950.0
Drainage/Filling/Loss Of Wetlands	Habitat Alterations (Not Directly Related To Hydromodification)	10,950.0
Industrial Point Source Discharge	Industrial	8,766.7
Sources Outside State Jurisdiction Or Borders	Other	4,757.0
Upstream Impoundments (E.G., Pl-566 Nrcs Structures)	Hydromodification	2,468.7
Mill Tailings	Industrial	2,254.0
Mine Tailings	Resource Extraction	2,254.0
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	2,254.0
Grazing In Riparian Or Shoreline Zones	Agriculture	1,531.0
Sanitary Sewer Overflows (Collection System Failures)	Municipal Dishcarges/Sewage	1,050.0
Discharges From Municipal Separate Storm Sewer Systems (Ms4)	Urban-Related Runoff/Stormwater	994.0
Combined Sewer Overflows	Municipal Dishcarges/Sewage	994.0
Municipal (Urbanized High Density Area)	Urban-Related Runoff/Stormwater	45.0
Animal Feeding Operations (Nps)	Agriculture	34.0
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Dishcarges/Sewage	3.7

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Tennessee Causes of Impairment for Reporting Year 2008

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Tennessee Probable Sources Contributing to Impairments
for Reporting Year 2008

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Tennessee TMDL Alternatives by Cause of Impairment 2008

No TMDL Alternatives reported.

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Tennessee Previously Impaired Waters Now Attaining All Uses

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
2007	6	6
2008	1	2

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Tennessee Causes of Impairment for 303(d) Listed Waters

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
Habitat Alterations	346
Sediment	341
Nutrients	279
Pathogens	211
Organic Enrichment/Oxygen Depletion	137
Metals (other than Mercury)	80
pH/Acidity/Caustic Conditions	33
Mercury	31
Polychlorinated Biphenyls (PCBs)	28
Temperature	19
Cause Unknown	19
Dioxins	13
Pesticides	13
Toxic Organics	12
Oil and Grease	8
Ammonia	5
Turbidity	5
Salinity/Total Dissolved Solids/Chlorides/Sulfates	4
Taste, Color and Odor	4
Nuisance Native Species	2
Radiation	1
Toxic Inorganics	1
Chlorine	1
Total Toxics	1

Total: 1,594 Causes of Impairment

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Tennessee Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

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
Escherichia Coli (E. Coli)	396	401
Siltation	342	476
Fecal Coliform	62	62
Other Habitat Alteration(s)	60	61
Nitrogen, Total	41	52
Phosphorus, Total	40	40
Carbonaceous Bod	14	15
Polychlorinated Biphenyls (PCBs)	13	13
Iron	12	13
pH	10	10
Chlordane	8	18
Low pH	7	7
Alkalinity	6	7
Chlordane in Fish Tissue	6	6
Dioxin in Fish Tissue	6	7
Manganese	5	6
Ammonia, Un-ionized	2	3
Antimony	1	1
Arsenic	1	1
Cadmium	1	1
Copper	1	1
Dioxins	1	1
Lead	1	1
PCB(s) in Fish Tissue	1	2
Salinity/Total Dissolved Solids/Chlorides	1	1
Zinc	1	1

Total: 1,039 TMDLs; 1,207 Causes of Impairment Addressed

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Tennessee Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.

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
1999	1	1
2001	8	8
2002	13	13
2003	51	72
2004	65	66
2005	80	97
2006	319	383
2007	90	100
2008	311	324
2009	101	143

Total: 1,039 TMDLs; 1,207 Causes of Impairment Addressed

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