Vermont Water Quality Assessment Report
On This Page
- Vermont 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
2006
2008
2010
2012
Waterbody Changes from Prior Cycle
For More Information:
Download Excel compatible information
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Site-specific Targeted Monitoring Summary Results
Vermont (2014)
Description of this table| Size of Water | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rivers and Streams (Miles) |
Lakes, Reservoirs, and Ponds (Acres) |
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| Good Waters | 6,048.6 | 29,382.0 | |||||||||||||
| Previously impaired waters now attaining all uses |
26.0 | ||||||||||||||
| Threatened Waters | |||||||||||||||
| TMDL completed | |||||||||||||||
| TMDL alternative | |||||||||||||||
| Non-pollutant impairment | |||||||||||||||
| TMDL needed | |||||||||||||||
| Impaired Waters | 530.2 | 200,366.0 | |||||||||||||
| TMDL completed | 128.9 | 18,401.0 | |||||||||||||
| TMDL alternative | 8.2 | ||||||||||||||
| Non-pollutant impairment | 235.8 | 8,537.0 | |||||||||||||
| TMDL needed | 157.3 | 173,428.0 | |||||||||||||
| New TMDLs completed | .0 | .0 | |||||||||||||
| Remaining TMDLs needed | 157.3 | 173,428.0 | |||||||||||||
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| Total Assessed Waters | 6,578.8 | 229,748.0 | |||||||||||||
| Total Waters | 7,099.0 | 229,774.0 | |||||||||||||
| Percent of Waters Assessed | 92.7 | 100.0 | |||||||||||||
Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2014
Site-specific Targeted Monitoring Results
Vermont Rivers and Streams 2014
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Site-specific Targeted Monitoring Results
Individual Designated Use Support
Vermont Rivers and Streams 2014
* 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 | |
|---|---|---|---|---|---|
| Aesthetic | 4,323.4 | 95.7 | .0 | 4.3 | ![]() ![]() |
| Aquatic Biota, Wildlife, And Aquatic Habitat | 4,355.7 | 90.9 | .0 | 9.1 | ![]() ![]() |
| Boating, Fishing, And Other Recreational Uses | 4,384.2 | 98.1 | .0 | 1.9 | ![]() ![]() |
| Fish Consumption | 6,578.8 | 98.7 | .0 | 1.3 | ![]() ![]() |
| Swimming And Other Primary Contact Recreation | 2,677.9 | 94.6 | .0 | 5.4 | ![]() ![]() |
Site-specific Targeted Monitoring Results
Causes of Impairment
Vermont Rivers and Streams 2014
Description of this table
| Cause of Impairment | Cause of Impairment Group | Miles Threatened or Impaired |
|---|---|---|
| Flow Alteration(s) | Flow Alteration(s) | 215.0 |
| Escherichia Coli (E. Coli) | Pathogens | 130.7 |
| Mercury in Fish Tissue | Mercury | 75.6 |
| Sedimentation/Siltation | Sediment | 63.0 |
| Nutrients | Nutrients | 50.7 |
| Stormwater | Other Cause | 31.8 |
| pH, Low | pH/Acidity/Caustic Conditions | 31.6 |
| Direct Habitat Alterations | Habitat Alterations | 23.2 |
| Temperature, Water | Temperature | 15.5 |
| Metals, Acid - Mining | Metals (other than Mercury) | 8.4 |
| PCB(s) in Fish Tissue | Polychlorinated Biphenyls (PCBs) | 7.0 |
| Iron | Metals (other than Mercury) | 6.3 |
| Dissolved Oxygen Saturation | Organic Enrichment/Oxygen Depletion | 6.0 |
| Exotic Species | Nuisance Exotic Species | 3.8 |
| Asbestos | Toxic Inorganics | 2.3 |
| Toxics | Total Toxics | 1.9 |
| Loss of Instream Cover | Habitat Alterations | 1.8 |
| Organic Enrichment (Sewage) Biological Indicators | Organic Enrichment/Oxygen Depletion | 1.2 |
| Eurasian Water Milfoil, Myriophyllum Spicatum | Nuisance Exotic Species | 1.0 |
| Turbidity | Turbidity | |
| Manganese | Metals (other than Mercury) | |
| Chloride | Salinity/Total Dissolved Solids/Chlorides/Sulfates | |
| Arsenic | Metals (other than Mercury) | |
| Zinc | Metals (other than Mercury) | |
| Ag Runoff | Cause Unknown |
Site-specific Targeted Monitoring Results
Probable Sources
Vermont Rivers and Streams 2014
Description of this table
| Probable Source | Probable Source Group | Miles Threatened or Impaired |
|---|---|---|
| Agriculture | Agriculture | 55.1 |
| Atmospheric Deposition - Acidity | Atmospheric Deposition | 34.7 |
| Combined Sewer Overflows | Municipal Discharges/Sewage | 33.9 |
| Dam Or Impoundment | Hydromodification | 32.5 |
| Urban Runoff/Storm Sewers | Urban-Related Runoff/Stormwater | 21.7 |
| Atmospheric Deposition - Toxics | Atmospheric Deposition | 11.0 |
| Mine Tailings | Resource Extraction | 9.7 |
| Channelization | Hydromodification | 6.2 |
| Impacts From Resort Areas (Winter And Non-Winter Resorts) | Recreation And Tourism (Non-Boating) | 5.3 |
| Land Development | Construction | 4.0 |
| Site Clearance (Land Development Or Redevelopment) | Construction | 4.0 |
| Acid Mine Drainage | Resource Extraction | 2.9 |
| Landfills | Land Application/Waste Sites/Tanks | 2.9 |
| Rcra Hazardous Waste Sites | Industrial | 2.0 |
| Agricultural Runoff | Agriculture | .5 |
| Inappropriate Waste Disposal | Spills/Dumping | .5 |
| Accidental Release/Spill | Spills/Dumping | .5 |
| Sand/Gravel/Rock Mining Or Quarries | Resource Extraction | |
| Unspecified Land Disturbance | Other |
Site-specific Targeted Monitoring Results
Vermont Lakes, Reservoirs, and Ponds 2014
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Site-specific Targeted Monitoring Results
Individual Designated Use Support
Vermont Lakes, Reservoirs, and Ponds 2014
* 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 | |
|---|---|---|---|---|---|
| Aesthetic | 228,746.0 | 33.2 | .0 | 66.8 | ![]() ![]() |
| Aquatic Biota, Wildlife, And Aquatic Habitat | 228,724.0 | 80.7 | .0 | 19.3 | ![]() ![]() |
| Boating, Fishing, And Other Recreational Uses | 227,745.0 | 85.8 | .0 | 14.2 | ![]() ![]() |
| Fish Consumption | 229,748.0 | 20.6 | .0 | 79.4 | ![]() ![]() |
| Public Water Supply | 165,554.0 | 91.8 | .0 | 8.2 | ![]() ![]() |
| Swimming And Other Primary Contact Recreation | 227,721.0 | 33.3 | .0 | 66.7 | ![]() ![]() |
Site-specific Targeted Monitoring Results
Causes of Impairment
Vermont Lakes, Reservoirs, and Ponds 2014
Description of this table
| Cause of Impairment | Cause of Impairment Group | Acres Threatened or Impaired |
|---|---|---|
| Mercury in Fish Tissue | Mercury | 182,340.0 |
| PCB(s) in Fish Tissue | Polychlorinated Biphenyls (PCBs) | 166,171.0 |
| Phosphorus | Nutrients | 139,927.0 |
| Eurasian Water Milfoil, Myriophyllum Spicatum | Nuisance Exotic Species | 22,179.0 |
| Zebra Mussel, Dreissena Polymorph | Nuisance Exotic Species | 21,503.0 |
| Flow Alteration(s) | Flow Alteration(s) | 6,485.0 |
| pH | pH/Acidity/Caustic Conditions | 4,468.0 |
| Water Chestnut | Noxious Aquatic Plants | 2,746.0 |
| Variable-Leaved Watermilfoil, Myriophyllum Heterophyllum | Nuisance Exotic Species | 1,617.0 |
| Brittle Naiad, Najas Minor | Nuisance Exotic Species | 839.0 |
| Sedimentation/Siltation | Sediment | 839.0 |
| Organic Enrichment/Low Dissolved Oxygen | Organic Enrichment/Oxygen Depletion | 700.0 |
| Curly-Leaf Pondweed | Algal Growth | |
| Xylenes - Total, Mixed | Pesticides | |
| Toluene | Toxic Organics |
Site-specific Targeted Monitoring Results
Probable Sources
Vermont Lakes, Reservoirs, and Ponds 2014
Description of this table
| Probable Source | Probable Source Group | Acres Threatened or Impaired |
|---|---|---|
| Atmospheric Deposition - Toxics | Atmospheric Deposition | 182,340.0 |
| Inappropriate Waste Disposal | Spills/Dumping | 166,171.0 |
| Non-Point Source | Unspecified Nonpoint Source | 139,475.0 |
| Natural Sources | Natural/Wildlife | 68,040.0 |
| Agriculture | Agriculture | 33,315.0 |
| Other Marina/Boating On-Vessel Discharges | Recreational Boating And Marinas | 27,793.0 |
| Post-Development Erosion And Sedimentation | Hydromodification | 14,177.0 |
| Combined Sewer Overflows | Municipal Discharges/Sewage | 13,725.0 |
| Highway/Road/Bridge Runoff (Non-Construction Related) | Urban-Related Runoff/Stormwater | 13,725.0 |
| Flow Alterations From Water Diversions | Hydromodification | 7,977.0 |
| Atmospheric Deposition - Acidity | Atmospheric Deposition | 4,468.0 |
| Industrial Point Source Discharge | Industrial | 4,423.0 |
| Impacts From Hydrostructure Flow Regulation/Modification | Hydromodification | 2,178.0 |
| 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 | |
| Internal Nutrient Recycling | Natural/Wildlife | |
| Contaminated Sediments | Legacy/Historical Pollutants |
Vermont Causes of Impairment for Reporting Year 2014
Description of this table
Vermont Probable Sources Contributing to Impairments
for Reporting Year 2014
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) |
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| Agriculture | 55.6 | 33,767.0 | |||||||||||||
| Atmospheric Deposition | 45.7 | 183,116.0 | |||||||||||||
| Construction | 7.0 | ||||||||||||||
| Hydromodification | 38.7 | 22,254.0 | |||||||||||||
| Industrial | 2.0 | 4,423.0 | |||||||||||||
| Land Application/Waste Sites/Tanks | 2.9 | ||||||||||||||
| Legacy/Historical Pollutants | 6.0 | ||||||||||||||
| Municipal Discharges/Sewage | 33.9 | 13,725.0 | |||||||||||||
| Natural/Wildlife | 68,546.0 | ||||||||||||||
| Other | .2 | ||||||||||||||
| Recreation And Tourism (Non-Boating) | 5.3 | ||||||||||||||
| Recreational Boating And Marinas | 27,793.0 | ||||||||||||||
| Resource Extraction | 9.9 | ||||||||||||||
| Spills/Dumping | 1.0 | 166,171.0 | |||||||||||||
| Unspecified Nonpoint Source | 139,475.0 | ||||||||||||||
| Urban-Related Runoff/Stormwater | 21.7 | 13,725.0 | |||||||||||||
Vermont TMDL Alternatives by Cause of Impairment 2014
Description of this table
| 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) |
Lakes, Reservoirs, and Ponds (Acres) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sedimentation/Siltation | 5 |
4 | ||||||||||||
| Iron | 3 |
1 | ||||||||||||
| Arsenic | 0 | |||||||||||||
| Dissolved Oxygen Saturation | 6 | |||||||||||||
| Nutrients | 0 | |||||||||||||
| Stormwater | 1 | |||||||||||||
| Temperature, Water | 4 | |||||||||||||
| Toluene | 6 | |||||||||||||
| Toxics | 0 | |||||||||||||
| Turbidity | 1 | |||||||||||||
| Xylenes - Total, Mixed | 6 | |||||||||||||
Total: 17 TMDL Alternatives
Vermont 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 | 9 |
11 |
| 2007 | 4 |
4 |
| 2011 | 8 |
11 |
| 2012 | 3 |
4 |
| 2014 | 2 |
3 |
Vermont 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 |
|---|---|
| Polychlorinated Biphenyls (PCBs) | 28 |
| Sediment | 26 |
| Nutrients | 21 |
| Metals (other than Mercury) | 17 |
| Pathogens | 14 |
| pH/Acidity/Caustic Conditions | 8 |
| Other Cause | 4 |
| Toxic Inorganics | 4 |
| Total Toxics | 3 |
| Temperature | 2 |
| Organic Enrichment/Oxygen Depletion | 2 |
| Cause Unknown | 2 |
| Salinity/Total Dissolved Solids/Chlorides/Sulfates | 1 |
Total: 132 Causes of Impairment
Vermont 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 |
|---|---|---|
| Acid | 37 |
37 |
| Mercury | 31 |
31 |
| Escherichia Coli (E. Coli) | 22 |
22 |
| Phosphorus, Total | 22 |
22 |
| Pollutants in Urban Stormwater | 12 |
12 |
| Dichlorvos | 2 |
2 |
| Phosphorus | 2 |
2 |
| Sediment | 2 |
2 |
| Pathogens | 1 |
1 |
Total: 131 TMDLs; 131 Causes of Impairment Addressed
Vermont 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 |
|---|---|---|
| 2001 | 2 |
2 |
| 2002 | 2 |
2 |
| 2003 | 39 |
39 |
| 2004 | 7 |
7 |
| 2007 | 5 |
5 |
| 2008 | 35 |
35 |
| 2009 | 4 |
4 |
| 2010 | 1 |
1 |
| 2011 | 22 |
22 |
| 2012 | 2 |
2 |
| 2016 | 12 |
12 |
Total: 131 TMDLs; 131 Causes of Impairment Addressed


