Assessment and Listing

Color coded map of priority streams

The Monitoring, Assessment and Planning Program conducts various Assessment and Listing activities to characterize the quality of Vermont's surface waters:


Assessment of the Condition of Vermont Waters

In accordance with the federal Water Pollution Control Act (also known as the Clean Water Act), the Monitoring, Assessment and Planning Program periodically publishes assessment reports concerning the quality of Vermont’s surface waters. The purpose of Water Quality Assessment reports is to interpret water quality monitoring information from sites within an area of interest, and, where appropriate, relate that information to causes of observed problems and sources of pollutants. Surface waters are assessed using the Surface Water Assessment and Listing Methodology. See below for links to individual basin and subwatershed assessment reports.

Map of Vermont's Tactical Planning BasinsIndividual Basin Assessment Reports:

-Battenkill, Hoosic, and Walloomsac River Watersheds
-Southern Lake Champlain Watersheds
-Otter, Little Otter, and Lewis Creek Watersheds
-Northern Lake Champlain Watersheds
-Missisquoi Bay Basin
-Lamoille River Basin
-Winooski River Basin
-White River Basin
-Black, Ottauquechee River (and adjacent) Watersheds
-West, Williams, and Saxtons Rivers plus adjacent Lower  CT River Tributary Watersheds
-Deerfield River and adjacent Lower Connecticut River  Tributary Watersheds
-Stevens, Wells, Waits, Ompompanoosuc Rivers plus  adjacent CT River Tributary Watersheds
-Passumpsic River Basin
-Upper Connecticut River Watersheds
-Lake Memphremagog Basin

 

Section 305(b) Water Quality Integrated Assessment Report

​Section 305(b) of the Federal Water Pollution Control Act (also known as the Clean Water Act or CWA) requires each state to submit a report about the quality of the state's surface and ground waters to the US Environmental Protection Agency (EPA) on a biennial basis.


Priority Listing of Vermont Waters

For the purposes of identifying and tracking important water quality problems where the Vermont Water Quality Standards (VTWQS) are not met, VTDEC has developed the Vermont Priority Waters List. This list is composed of several parts, each identifying a group of waters with unique water quality concerns that are either impaired or altered:

Impaired
Part A (303d list):​ These waters are assessed as impaired due to one or more pollutants for which a TMDL is required to be developed.  This list is developed in even-numbered years and submitted to EPA for approval according federal Clean Water Act regulations.
Part B: These waters are assessed as impaired by a pollutant but because other pollution control mechanisms are in place, no TMDL is required to be developed. Water Quality Remediation Plans are one potential tool for addressing impairments.
Part D: These waters are assessed as impaired by a pollutant and have a completed TMDL that has been approved by EPA.

Altered
Part E: These waters are assessed as altered where aquatic habitat and/or other designated uses are not supported due to the extent of invasive aquatic species.
Part F: These waters are assessed as altered due to hydrologic factors.  These often include a lack of flow, water level or flow fluctuations or some other modified hydrologic condition.

 

 

 

 

Final 2016 Documents:

Altered
Part E: Waters altered by aquatic invasive species
Part F:  Waters altered by flow regulation

 

 

Other
Stressed Waters ListThese waters have been assessed as stressed where stressors are present that prohibit the waters from attaining higher water quality.

Additional Listing Documents:


Water Quality Remediation Plans

Pursuant to 40 C.F.R. §130.7(b), the State may use a Water Quality Remediation Plan (WQRP) in lieu of a TMDL for an impaired water when the State determines that the pollution control requirements of the WQRP are stringent enough to meet State Water Quality Standards within a reasonable period of time. The WQRP procedure is described here

Specific WQRPs

Jay Peak Resort:

Killington:

Mount Snow Resort:

Stowe Mountain Resort:

Stratton Mountain Resort:

Sugarbush Resort:


Additional Assessments

  • National Aquatic Resource Survey Initiative- MAPP participates in EPA’s National Aquatic Resource Survey Initiative, which provides the opportunity to conduct statewide water quality assessments separately for streams, lakes, and wetlands for both a state and national picture of water quality.
     
  • Probability Assessments- MAPP characterizes the biological condition of Vermont’s wadeable streams based on the results of statewide probability-based surveys, which are conducted jointly with US EPA’s National Rivers and Streams Assessment.
  • ​ Stream Geomorphic Assessments- VTDEC also assesses geomorphologic conditions through the Stream Geomorphic Assessment efforts of our Rivers Program.
     

Individual basin and subwatershed assessment reports

 

Battenkill, Hoosic, and Walloomsac River Watersheds
Map of Vermont with Battenkill-Hoosic-Walloomsac highlighted

Previous assessments: Battenkill, Hoosic, and Walloomsac River Watersheds (August 2002)

Updated assessment reports: Hoosic River Watershed (December 2014)

 

 

Southern Lake Champlain Watersheds
Map of VT with Southern Lake Champlain Basins highlighted

Previous assessments: Poultney - Mettawee Watersheds (December 1999)

Updated assessment reports: Poultney - Mettawee Watersheds (January 2013)

 

Otter, Little Otter, and Lewis Creek Watersheds
Map of VT with Otter, Little Otter, and Lewis Creek watersheds highlighted

Previous assessments: Otter, Little Otter, and Lewis Creeks (June 1998)

Updated assessment reports: Scheduled for 2017

 

 

Northern Lake Champlain Watersheds
Map of VT with Otter, Little Otter, and Lewis Creek watersheds highlighted

Previous assessments: Northern Lake Champlain Basins, Including Pike and Rock Rivers (December 2003)*

Updated assessment reports: Shelburne Bay Watershed (June 2013); St. Albans Bay Watershed (June 2013); Malletts Bay Watershed (July 2013)

*Note: Rock and Pike Rivers were included in the 2003 report, but are addressed as part
of the
 Missisquoi Bay Basin in subsequent assessments. 

 

Missisquoi Bay Basin
Map of VT with Missisquoi Bay Basin highlighted

Previous assessments: Missisquoi River Watershed (November 2004)*

Updated assessment reports: Missisquoi Bay Basin (August 2015)

*Note: Rock and Pike Rivers were included in the 2003 Northern Lake Champlain Basins report, but are addressed as part of the Missisquoi Bay Basin in subsequent assessments. 

 

Lamoille River Basin
Map of VT with Lamoille River Basin highlighted

Previous assessments: Lamoille River Basin (February 2001)

Updated assessment reports: Lamoille River Watershed Assessment Report February 2016 

 

 

Winooski River Basin
Map of VT with Winooski River Basin highlighted

Previous assessments: Winooski River Basin (April 2008)

Updated assessment reports: Scheduled for 2016

 

 

White River Basin
Map of VT with White River Basin highlighted

Previous assessments: White River Basin (November 1997); White River Basin (November 2002)

Updated assessment reports: White River Basin (November 2012)

 

 

Black, Ottauquechee River (and adjacent CT River tributary) Watersheds
Map of VT with Ottauquechee, Black, and adjacent watersheds highlighted

Previous assessments: Black and Ottauquechee River Watersheds (June 2000)*

Updated assessment reports:  Black River Watershed (October 2016); Ottauquechee River Watershed including Mills Brook and Lulls Brook (October 2016)

*Note: Only the Black and Ottauquechee Rivers were included in the 2000 report, but adjacent CT River direct drainages will be included in subsequent reports.

 

West, Williams, and Saxtons Rivers plus adjacent Lower CT River Tributary Watersheds
Map of VT with Ottauquechee, Black, and adjacent watersheds highlighted

Previous assessments: West, Williams, and Saxtons River Watersheds (November 2001)Lower CT River Tributary Watersheds (April 2002)*

Updated assessment reports: West River Watershed (October 2014)Williams River Watershed (October 2014)Saxtons River Watershed (October 2014)Lower CT River Tributary Watersheds (October 2014)*

*Note: Only the West, Williams, and Saxtons Rivers were included in the 2001 report, but adjacent Lower CT River direct drainages were assessed separately in 2002 and 2014, and will now be included in subsequent reports.

 

Deerfield River and adjacent Lower Connecticut River Tributary Watersheds 
Map of VT with Deerfield River and adjacent Lower Connecticut River Tributaries highlighted

Previous assessments: Deerfield River Watershed (March 2003)*

Updated assessment reports: Deerfield River Watershed (December 2012)*

*Note: Only the Deerfield River watershed was included in the 2003 and 2012 reports, but adjacent Lower CT River direct drainages were assessed with other direct drainages in 2002 and 2014 (see above) and will now be included with the Deerfield in subsequent reports.

 

Stevens, Wells, Waits, Ompompanoosuc Rivers plus adjacent CT River Tributary Watersheds
Map of VT with Stevens, Wells, Waits, Ompompanoosuc Rivers plus adjacent CT River Tributary Watersheds highlighted

Previous assessments: Stevens, Wells, Waits and Ompompanoosuc Rivers Watersheds (April 1999)*

Updated assessment reports: Stevens River Watershed (June 2014); Wells River Watershed (August 2014); Waits River and Halls Brook Watersheds (August 2014)Ompompanoosuc River and adjacent CT River Tributary Watersheds (December 2014)*

*Note: The Stevens, Wells, Waits and Ompompanoosuc Rivers Watersheds were assessed as a group in 1999. Adjacent direct CT River drainages were assessed with the Upper CT River watersheds in 2011 (see below) and again in 2014 in conjunction with the Ompompanoosuc.  These will continue to be assessed with the Ompompanoosuc in subsequent reports.

 

Passumpsic River Basin
Map of VT with Passumpsic River highlighted

Previous assessments: Passumpsic River Basin (June 2009)

Updated assessment reports: Passumpsic River Basin (February 2013)

 

 

Upper Connecticut River Watersheds 
Map of VT with Upper CT River watersheds highlighted

Previous assessments: Upper Connecticut River Watersheds (March 2011)*

Updated assessment reports: Scheduled for 2016

*Note: Some more southerly CT River direct drainages included in the 2011 report were assessed again in 2014 in conjunction with the Ompompanoosuc River Basin, and will continue to be assessed with the Ompompanoosuc in subsequent reports.

 

Lake Memphremagog Basin
Map of VT with Lake Memphremagog Basin highlighted

Previous assessments: Lake Memphremagog (March 2006)*

Updated assessment reports: Lake Memphremagog Basin Assessment Report 2015

*Note: The Lake Memphremagog Basin includes two international watersheds (the Tomifobia and Coaticook Rivers) that do not flow directly to the lake, though are also part of the greater Saint Lawrence River Basin.