Seminole County Water Atlas


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Mirror Lake

Mirror Lake

Map

located within Little Wekiva Watershed

Description

Explore general as well as scientific information about the movement, chemistry and biology of area surface water environments.

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Map Legend

Water Quality sampling site
Hydrology sampling site
Closest Rainfall site
Rainfall sampling site
Multi-type sampling site
Other sampling site
 

Overall Trophic State Index

"Trophic" means "relating to nutrition." The Trophic State Index (TSI) takes into account chlorophyll, nitrogen, and phosphorus, which are nutrients required by plant life. The Florida Department of Environmental Protection (FDEP) uses this information to determine a rating for the waterbody. Learn more about the Trophic State Index »

Latest Value Limiting Nutrient Historic Range Additional Information
48 (Good)
7/11/2019 11:30:00 AM
Source: Seminole County Water Quality Data
PHOSPHORUS 11 (Good) - 70 (Poor)
10/20/1994 - 7/11/2019
88 samples
Legend:
Water Quality Trophic State Index Trophic State Classification
GOOD0 - 59Oligotrophic through Mid-Eutrophic
FAIR60 - 69Mid-Eutrophic through Eutrophic
POOR70 - 100Hypereutrophic
 
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    Nutrient Chemistry

    Although present in all surface waters, nutrients are among the leading causes of degradation of Florida water resources. Learn more about nutrient chemistry »

    Parameter Latest Value Historic Range Additional Information
    Total Nitrogen (TN) 841.0 ug/l
    7/11/2019 11:30:00 AM
    Source: Seminole County Water Quality Data
    115.0 - 2,404.0 ug/L
    10/20/1994 - 7/11/2019
    92 samples
    Total Phosphorus (TP) 21.0 ug/L
    7/11/2019 11:30:00 AM
    Source: Seminole County Water Quality Data
    3.9 - 315.0 ug/L
    3/9/1982 - 7/11/2019
    95 samples
    Chlorophyll a,
    uncorrected for
    pheophytin help icon
    7.9 ug/L
    1/28/2009
    Source: Seminole County Water Quality Data
    0.6 - 84.0 ug/L
    6/18/1974 - 1/28/2009
    48 samples
    Chlorophyll a,
    corrected for
    pheophytin help icon
    8.8 ug/L
    7/11/2019 11:30:00 AM
    Source: Seminole County Water Quality Data
    1.0 - 22.0 ug/L
    1/16/2007 - 7/11/2019
    46 samples

      Water Clarity

      Water clarity or turbidity measures the degree to which light is blocked because the water is cloudy or contains suspended particles, such as algae. Water clarity is one indicator of a waterbody's ability to sustain plants and wildlife. Learn more about water clarity »

      Parameter Latest Value Historic Range Additional Information
      Secchi Depth 4.9 ft
      4/1/2019
      Source: Seminole County Water Quality Data
      0.5 ft - 12.5 ft
      3/9/1982 - 4/1/2019
      46 samples
      Turbidity 1.9 NTU
      7/11/2019 11:30:00 AM
      Source: Seminole County Water Quality Data
      0.0 NTU - 32.0 NTU
      3/9/1982 - 7/11/2019
      91 samples
      Light Attenuation NO DATA NO DATA NO DATA
       

        Bacteria

        The currently used bacterial indicators for recreational waters include total coliform, fecal coliform and enterococcus. Indicator organisms themselves are not necessarily pathogenic but their presence "indicates" or suggests recent contamination by human sewage or other waste which may result in human illness. Sources of contamination include storm water runoff, sewage overflows and feces from wild and domestic animals. Learn more about bacteria »

        Parameter Latest Value Historic Range Additional Information
        Fecal Coliform 11 CFU/100ml
        1/28/2014
        Source: Seminole County Water Quality Data
        1 - 460 CFU/100ml
        6/18/1974 - 1/28/2014
        72 samples
        Total Coliform 187 CFU/100ml
        6/18/1974
        Source: FDEP Historic Data from Legacy STORET
        154 - 187 CFU/100ml
        6/18/1974 - 6/18/1974
        2 samples
        Enterococcus NO DATA NO DATA NO DATA
        E. coli NO DATA NO DATA NO DATA

          Dissolved Oxygen

          Dissolved Oxygen (DO) is one of the most important indicators of water quality. It is essential for the survival of fish and other aquatic organisms. Learn more about dissolved oxygen »

          Parameter Latest Value Historic Range Additional Information
          Dissolved Oxygen 8.0 mg/l
          4/1/2019
          Source: Seminole County Water Quality Data
          2.5 - 14.8 mg/l
          6/18/1974 - 4/1/2019
          98 samples

            Impaired Waters

            The Impaired Waters Data is the most recent available data from FDEP, but it may not reflect the current FDEP impaired list. These data are updated when and as soon as they are made available from FDEP.

            This waterbody is not impaired according to the Impaired Waters Rule (IWR) Chapter 62-303 F.A.C.. Impairment is a status given to waters that are not supporting their designated uses for a particular analyte. All water resources in this county are designated as Class III waters. Class III waters are considered recreational use waters, which means that the water should be fishable and swimmable. Class II waters are for shellfish propagation and harvesting. Class I waters are considered potable (drinkable) water supplies. Learn more about impaired waters »

            Pollutants

            This waterbody has no known pollutants.

             

             

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