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Vermont Assessment Summary for Reporting Year 2008

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Good Waters	5,158.7	32,019.0
Previously impaired waters       now attaining all uses	485.4
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	396.5	197,703.0
TMDL completed	56.6	19,340.0
TMDL alternative	6.6
Non-pollutant impairment	85.0	6,711.0
TMDL needed	248.3	171,652.0
New TMDLs completed	6.4	.0
Remaining TMDLs needed	241.9	171,652.0
Total Assessed Waters	5,555.2	229,722.0
Total Waters	7,099.0	229,498.0
Percent of Waters Assessed	78.3	100.1

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

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

Description of this table Assessed Status Miles Assessed 5,555.2 Unassessed 1,543.8 Total Miles 7,099.0

Description of this table Attainment Status Miles Good 5,158.7 Threatened .0 Impaired 396.5 Total Miles Assessed 5,555.2

Description of this table TMDL Development Status Miles All TMDLs completed 63.0 TMDL alternative 6.6 Non-pollutant impairment 85.0 TMDL needed 241.9 Total Threatened and Impaired 396.5

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Vermont 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
Aesthetic	2,909.1	95.9	.0	4.1
Aquatic Biota, Wildlife, And Aquatic Habitat	2,876.6	91.1	.0	8.9
Boating, Fishing, And Other Recreational Uses	3,453.3	99.0	.0	1.0
Fish Consumption	5,437.9	98.8	.0	1.2
Public Water Supply	2.0	.0	.0	100.0
Swimming And Other Primary Contact Recreation	1,926.3	94.2	.0	5.8

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Vermont 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	103.9
Flow Alteration(s)	Flow Alteration(s)	74.2
Mercury in Fish Tissue	Mercury	56.0
Ag Runoff	Cause Unknown	52.9
Temperature, Water	Temperature	34.8
Sedimentation/Siltation	Sediment	32.1
Stormwater	Other Cause	30.1
pH, Low	pH/Acidity/Caustic Conditions	28.4
Metals	Metals (other than Mercury)	15.5
Nutrients	Nutrients	12.5
Toxics	Total Toxics	11.8
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	7.0
Dissolved Oxygen Saturation	Organic Enrichment/Oxygen Depletion	6.0
Low Flow Alterations	Flow Alteration(s)	4.0
Iron	Metals (other than Mercury)	3.9
Asbestos	Toxic Inorganics	1.3
Zinc	Metals (other than Mercury)	.2
Arsenic	Metals (other than Mercury)	.2

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

Probable Source	Probable Source Group	Miles Threatened or Impaired
Dam Or Impoundment	Hydromodification	5.5
Agriculture	Agriculture	5.2
Mine Tailings	Resource Extraction	5.2
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	2.8
Combined Sewer Overflows	Municipal Dishcarges/Sewage	2.5
Impacts From Resort Areas (Winter And Non-Winter Resorts)	Recreation And Tourism (Non-Boating)	1.9
Site Clearance (Land Development Or Redevelopment)	Construction	.7
Silviculture Activities	Silviculture (Forestry)	.7
Landfills	Land Application/Waste Sites/Tanks	.4

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

Description of this table Assessed Status Acres Assessed 229,722.0 Unassessed -224.0 Total Acres 229,498.0

Description of this table Attainment Status Acres Good 32,019.0 Threatened .0 Impaired 197,703.0 Total Acres Assessed 229,722.0

Description of this table TMDL Development Status Acres All TMDLs completed 19,340.0 TMDL alternative .0 Non-pollutant impairment 6,711.0 TMDL needed 171,652.0 Total Threatened and Impaired 197,703.0

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Vermont 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
Aesthetic	228,568.0	34.5	.0	65.5
Aquatic Biota, Wildlife, And Aquatic Habitat	228,546.0	81.9	.0	18.1
Boating, Fishing, And Other Recreational Uses	227,567.0	87.0	.0	13.0
Fish Consumption	229,685.0	20.6	.0	79.4
Public Water Supply	165,560.0	90.5	.0	9.5
Swimming And Other Primary Contact Recreation	227,543.0	34.5	.0	65.5

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Vermont 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
Mercury in Fish Tissue	Mercury	182,290.0
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	163,678.0
Phosphorus, Total	Nutrients	139,927.0
Zebra Mussel, Dreissena Polymorph	Nuisance Exotic Species	21,740.0
Eurasian Water Milfoil, Myriophyllum Spicatum	Nuisance Exotic Species	18,211.0
Flow Alteration(s)	Flow Alteration(s)	5,985.0
pH	pH/Acidity/Caustic Conditions	4,420.0
Organic Enrichment/Low Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	700.0
Exotic Species	Nuisance Exotic Species	628.0
Sedimentation/Siltation	Sediment	100.0
Escherichia Coli (E. Coli)	Pathogens	9.0

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

Probable Source	Probable Source Group	Acres Threatened or Impaired
Atmospheric Deposition - Toxics	Atmospheric Deposition	182,290.0
Inappropriate Waste Disposal	Spills/Dumping	163,678.0
Non-Point Source	Unspecified Nonpoint Source	133,509.0
Municipal Point Source Discharges	Municipal Dishcarges/Sewage	73,869.0
Natural Sources	Natural/Wildlife	67,992.0
Agriculture	Agriculture	33,315.0
Other Shipping Releases (Wastes And Detritus)	Commercial Harbor And Port Activities	23,046.0
Other Marina/Boating On-Vessel Discharges	Recreational Boating And Marinas	17,942.0
Post-Development Erosion And Sedimentation	Hydromodification	14,177.0
Highway/Road/Bridge Runoff (Non-Construction Related)	Urban-Related Runoff/Stormwater	13,725.0
Combined Sewer Overflows	Municipal Dishcarges/Sewage	13,725.0
Flow Alterations From Water Diversions	Hydromodification	7,997.0
Source Unknown	Unknown	4,455.0
Industrial Point Source Discharge	Industrial	4,423.0
Atmospheric Deposition - Acidity	Atmospheric Deposition	4,420.0
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	2,198.0
Non-Irrigated Crop Production	Agriculture	1,908.0
Managed Pasture Grazing	Agriculture	1,854.0
Animal Feeding Operations (Nps)	Agriculture	1,456.0
Streambank Modifications/Destabilization	Hydromodification	100.0
Internal Nutrient Recycling	Natural/Wildlife	54.0

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Vermont Causes of Impairment for Reporting Year 2008

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Vermont Probable Sources Contributing to Impairments
for Reporting Year 2008

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Vermont TMDL Alternatives by Cause of Impairment 2008

NOTE: Click on the underlined "Number of TMDL Alternatives by Cause of Impairment " value to see a listing of those Causes of Impairment.
Cause of Impairment	Number of TMDL Alternatives	Rivers and Streams (Miles)
Metals	2	1
Sedimentation/Siltation	2	3
Dissolved Oxygen Saturation	1	6
Temperature, Water	1	4
Toxics	1	0

Total: 7 TMDL Alternatives

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Vermont 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
2004	9	11
2007	4	4

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Vermont 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
Pathogens	31
Polychlorinated Biphenyls (PCBs)	27
Cause Unknown	18
Metals (other than Mercury)	17
Sediment	15
Other Cause	14
Nutrients	12
pH/Acidity/Caustic Conditions	7
Temperature	5
Total Toxics	5
Toxic Inorganics	2

Total: 153 Causes of Impairment

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Vermont 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
Acid	37	37
Mercury	31	31
Pollutants in Urban Stormwater	12	12
Phosphorus, Total	10	10
Sediment	2	2
Pathogens	1	1
Phosphorus	1	1

Total: 94 TMDLs; 94 Causes of Impairment Addressed

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Vermont 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
2001	2	2
2002	3	3
2003	39	39
2004	6	6
2007	5	5
2008	35	35
2009	4	4

Total: 94 TMDLs; 94 Causes of Impairment Addressed

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TMDL Document Search

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