POLLUTION LOCATOR| Water | Watershed Impairment

Clean Water Act Status: Upper Connecticut-Mascoma Watershed
 
 
  • Clean Water Act Comparative Ranking
    Cleanest/Best Watersheds National Average Dirtiest/Worst Watersheds
    0%         50%         100%

    Percentage of Surface Waters with Impaired or Threatened Uses (state + EPA data):
    Number of Impaired Waterbodies (as reported by the state):

    NOTE: Data limitations affect the accuracy of these rankings.

    Rank watersheds by assessed use impairments
    Rank counties by assessed use impairments.
    Rank states by assessed use impairments, impairments due to specific causes, or impairments due to specific sources

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  • 1998 Clean Water Act Status
    Upper Connecticut-Mascoma contains a portion of 6 counties:
    CHESHIRE County, NH
    GRAFTON County, NH
    ORANGE County, VT
    SULLIVAN County, NH
    WINDHAM County, VT
    WINDSOR County, VT
    Percentage of Surface Waters with Reported Problems (state + EPA data): 15%
    Number of Waterbodies with Reported Problems (as reported by the state): 16
    Beneficial Use Most Frequently Impaired Percent of All Impairments
    Not Reported 81%
    Aquatic Life Support 12%
    Primary Contact Recreation (Swimming) 6%


    Priority for Regulation     Number of Waterbodies
    Targeted 0
    High 8
    Medium 2
    Low 2
    Not Assessed for TMDL Priority 0
    Not Reported to US EPA for TMDL Priority 4
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 15
    Percent of Rivers, Streams and Creeks in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 24%
    Percent of Rivers, Streams and Creeks in VERMONT assessed by agencies for 1997-98 reporting period: 16%
      Percent Waterbodies Affected
    Pathogens 73%
    Organic Compounds 13%
    Metals 7%
    Nutrients 7%
    Sediments 7%
    More...

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 1
    Percent of Lakes, Reservoirs and Ponds in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 95%
    Percent of Lakes, Reservoirs and Ponds in VERMONT assessed by agencies for 1997-98 reporting period: 7%
      Percent Waterbodies Affected
    pH 100%

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.




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  • Leading Sources of Water Quality Problems
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 15(cause not reported for 26%)
    Percent of Rivers, Streams and Creeks in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 24%
    Percent of Rivers, Streams and Creeks in VERMONT assessed by agencies for 1997-98 reporting period: 16%
      Percent Waterbodies Affected
    Agriculture 27%
    Impairment source not reported 27%
    Unknown Sources 27%
    Combined Sewer Overflows 20%

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 1
    Percent of Lakes, Reservoirs and Ponds in NEW HAMPSHIRE assessed by agencies for 1997-98 reporting period: 95%
    Percent of Lakes, Reservoirs and Ponds in VERMONT assessed by agencies for 1997-98 reporting period: 7%
      Percent Waterbodies Affected
    Atmospheric Deposition 100%

    NOTE: Possible inconsistencies between data on (a) impaired waterbodies and (b) percentage of waterbodies assessed.




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  • Links
    U.S. EPA Watershed Health Index
    U.S. EPA Condition and Vulnerability Indicators
    U.S. EPA Watershed Profile
    U.S. Geological Survey: Water Resources Links
    USGS report on the National Water-Quality Assessment (NAWQA) study unit this watershed is in.
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