POLLUTION LOCATOR| Water | State Clean Water Act Status Report

Clean Water Act Status: WYOMING
 
 
  • Clean Water Act Comparative Ranking
    Cleanest/Best States National Average Dirtiest/Worst States
    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 counties in WYOMING or in the U.S. by assessed use impairments.
    Rank watersheds in WYOMING 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
    WYOMING contains a portion of 76 watersheds.
    Percentage of Surface Waters with Reported Problems (state + EPA data): 2%
    Number of Waterbodies with Reported Problems (as reported by the state): 63
    Beneficial Use Most Frequently Impaired Percent of All Impairments
    Aquatic Life Support 86%
    Primary Contact Recreation (Swimming) 27%
    SecondaryContact Recreation (Boating) 17%
    Wildlife Support 6%
    Agriculture 5%
    Beneficial uses not reported for 100% of waterbodies.


    Priority for Regulation     Number of Waterbodies
    Targeted 31
    High 9
    Medium 3
    Low 19
    Not Assessed for TMDL Priority 0
    Not Reported to US EPA for TMDL Priority 1
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 58
    Percent of Rivers, Streams and Creeks in WYOMING assessed by agencies for 1997-98 reporting period: 87%
      Percent Waterbodies Affected
    Pathogens 45%
    Inorganics 41%
    Ammonia 38%
    Sediments 29%
    Nutrients 9%
    More...

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 4
    Percent of Lakes, Reservoirs and Ponds in WYOMING assessed by agencies for 1997-98 reporting period: 0%
      Percent Waterbodies Affected
    Sediments 50%
    Impaired Biological Community 25%
    Nutrients 25%
    Pathogens 25%
    Ammonia 25%
    More...

    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: 58 (cause not reported for 46%)
    Percent of Rivers, Streams and Creeks in WYOMING assessed by agencies for 1997-98 reporting period: 87%
      Percent Waterbodies Affected
    Impairment source not reported 47%
    Nonpoint Sources 33%
    Unknown Sources 19%
    Municipal Point Sources 5%
    Natural Sources 3%

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 4 (cause not reported for 25%)
    Percent of Lakes, Reservoirs and Ponds in WYOMING assessed by agencies for 1997-98 reporting period: 0%
      Percent Waterbodies Affected
    Nonpoint Sources 50%
    Impairment source not reported 25%
    Natural Sources 25%

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




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