POLLUTION LOCATOR| Water | Watershed Impairment

Clean Water Act Status: Big Sunflower 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
    Big Sunflower contains a portion of 9 counties:
    BOLIVAR County, MS
    COAHOMA County, MS
    HUMPHREYS County, MS
    LEFLORE County, MS
    SHARKEY County, MS
    SUNFLOWER County, MS
    TALLAHATCHIE County, MS
    WASHINGTON County, MS
    YAZOO County, MS
    Percentage of Surface Waters with Reported Problems (state + EPA data): 100%
    Number of Waterbodies with Reported Problems (as reported by the state): 46
    Beneficial Use Most Frequently Impaired Percent of All Impairments
    Aquatic Life Support 100%
    SecondaryContact Recreation (Boating) 7%


    Priority for Regulation     Number of Waterbodies
    Targeted 0
    High 0
    Medium 3
    Low 5
    Not Assessed for TMDL Priority 38
    Not Reported to US EPA for TMDL Priority 0
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 37
    Percent of Rivers, Streams and Creeks in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 47%
      Percent Waterbodies Affected
    Sediments 76%
    Nutrients 70%
    Pesticides 70%
    Low Dissolved Oxygen/Organic Enrichment 59%
    Impaired Biological Community 16%
    More...

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 8
    Percent of Lakes, Reservoirs and Ponds in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 58%
      Percent Waterbodies Affected
    Nutrients 100%
    Sediments 100%
    Pesticides 88%
    Low Dissolved Oxygen/Organic Enrichment 62%

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


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 1
    Percent of Estuaries and Bays in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 28%
    Percent of Coastal Shorelines in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 55%
      Percent Waterbodies Affected
    Low Dissolved Oxygen/Organic Enrichment 100%
    Nutrients 100%
    Pesticides 100%
    Sediments 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: 37(cause not reported for 100%)
    Percent of Rivers, Streams and Creeks in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 47%
      Percent Waterbodies Affected
    Impairment source not reported 100%

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 8(cause not reported for 100%)
    Percent of Lakes, Reservoirs and Ponds in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 58%
      Percent Waterbodies Affected
    Impairment source not reported 100%

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


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 1(cause not reported for 100%)
    Percent of Estuaries and Bays in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 28%
    Percent of Coastal Shorelines in MISSISSIPPI assessed by agencies for 1997-98 reporting period: 55%
      Percent Waterbodies Affected
    Impairment source not reported 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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