POLLUTION LOCATOR| Water | State Clean Water Act Status Report

Clean Water Act Status: OREGON
 
 
  • 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 OREGON or in the U.S. by assessed use impairments.
    Rank watersheds in OREGON 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
    OREGON contains a portion of 88 watersheds.
    Percentage of Surface Waters with Reported Problems (state + EPA data): 13%
    Number of Waterbodies with Reported Problems (as reported by the state): 1183
    Beneficial uses not reported for 100% of waterbodies.

    Priority for Regulation     Number of Waterbodies
    Targeted 0
    High 0
    Medium 0
    Low 0
    Not Assessed for TMDL Priority 1134
    Not Reported to US EPA for TMDL Priority 49
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  • Leading Pollutants/Stressors of Surface Waters
    Rivers, Streams, and Creeks
    Number of impaired waterbodies: 1118 (cause not reported for 0%)
    Percent of Rivers, Streams and Creeks in OREGON assessed by agencies for 1997-98 reporting period: 47%
      Percent Waterbodies Affected
    Temperature 84%
    Other Habitat Alterations 18%
    Pathogens 11%
    Sediments 10%
    Low Dissolved Oxygen/Organic Enrichment 5%
    More...

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


    Lakes, Reservoirs, and Ponds
    Number of impaired waterbodies: 32
    Percent of Lakes, Reservoirs and Ponds in OREGON assessed by agencies for 1997-98 reporting period: 94%
      Percent Waterbodies Affected
    Nutrients 75%
    pH 47%
    Mercury 12%
    Low Dissolved Oxygen/Organic Enrichment 12%
    Sediments 6%
    More...

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


    Estuaries, Bays, and Coasts
    Number of impaired waterbodies: 30
    Percent of Estuaries and Bays in OREGON assessed by agencies for 1997-98 reporting period: 26%
    Percent of Coastal Shorelines in OREGON assessed by agencies for 1997-98 reporting period: 0%
      Percent Waterbodies Affected
    Pathogens 97%
    Temperature 10%
    Low Dissolved Oxygen/Organic Enrichment 10%
    Nutrients 7%
    pH 7%
    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: 1118 (cause not reported for 100%)
    Percent of Rivers, Streams and Creeks in OREGON 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: 32 (cause not reported for 100%)
    Percent of Lakes, Reservoirs and Ponds in OREGON assessed by agencies for 1997-98 reporting period: 94%
      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: 30 (cause not reported for 100%)
    Percent of Estuaries and Bays in OREGON assessed by agencies for 1997-98 reporting period: 26%
    Percent of Coastal Shorelines in OREGON assessed by agencies for 1997-98 reporting period: 0%
      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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