Home Explore Ocklawaha River Watershed Dora, Lake
| Share

Lake Dora

Dora, Lake

Map It!

located within Ocklawaha River Watershed

Description

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

Map Legend
 

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 »

Water Quality Index
Latest Value Limiting Nutrient Historic Range Additional Information
69 (Fair)
10/18/2013
Source: LAKEWATCH Volunteer Water Quality Monitoring
PHOSPHORUS 12 (Good) - 96 (Poor)
11/6/1979 - 10/18/2013
3486 samples
Legend:
Water Quality Trophic State Index Trophic State Classification
GOOD0 - 59Oligotrophic through Mid-Eutrophic
FAIR60 - 69Mid-Eutrophic through Eutrophic
POOR70 - 100Hypereutrophic
 
    Return to Top

    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 »

    Nutrient Chemistry
    Parameter Latest Value Historic Range Additional Information
    Total Nitrogen (TN) 2,580.0 ug/l
    10/18/2013
    Source: LAKEWATCH Volunteer Water Quality Monitoring
    970.0 - 21,800.0 ug/L
    1/23/1973 - 10/18/2013
    2,195 samples
    Total Phosphorus (TP) 30.0 ug/L
    10/18/2013
    Source: LAKEWATCH Volunteer Water Quality Monitoring
    -6.3 - 990.0 ug/L
    6/5/1973 - 10/18/2013
    2,420 samples
    Chlorophyll a,
    uncorrected for
    pheophytin help icon
    92.0 ug/L
    1/15/2014
    Source: LAKEWATCH Volunteer Water Quality Monitoring
    0.0 - 347.0 ug/L
    11/6/1979 - 1/15/2014
    2,023 samples
    Chlorophyll a,
    corrected for
    pheophytin help icon
    71.3 ug/L
    9/18/2013 10:50:00 AM
    Source: SJRWMD Water Quality Data
    0.0 - 310.4 ug/L
    2/12/1985 - 9/18/2013
    437 samples
      Return to Top

      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 »

      Water Clarity
      Parameter Latest Value Historic Range Additional Information
      Secchi Depth 1.5 ft
      1/15/2014
      Source: LAKEWATCH Volunteer Water Quality Monitoring
      0.1 - 10.5 ft
      6/12/1978 - 1/15/2014
      3,510 samples
      Turbidity 19.1 NTU
      9/18/2013 10:50:00 AM
      Source: SJRWMD Water Quality Data
      2.0 NTU - 76.0 NTU
      2/12/1985 - 9/18/2013
      517 samples
      Light Attenuation 0.29 Alpha/M
      5/10/1994
      Source: Mote Marine Historic Data from Legacy STORET
      No Data Available No Data Available
       
        Return to Top

        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 »

        Bacteria
        Parameter Latest Value Historic Range Additional Information
        Fecal Coliform 2 CFU/100ml
        4/3/2012 2:15:00 PM
        Source: SJRWMD Water Quality Data
        0 - 260 CFU/100ml
        7/30/1974 - 4/3/2012
        82 samples
        Total Coliform 62 CFU/100ml
        6/10/2004 11:12:00 AM
        Source: Lake County Surface Water Quality
        0 - 300 CFU/100ml
        7/30/1974 - 6/10/2004
        28 samples
        Enterococcus 2 CFU/100ml
        4/3/2012 2:15:00 PM
        Source: SJRWMD Water Quality Data
        2 - 2 CFU/100ml
        4/3/2012 - 4/3/2012
        2 samples
          Return to Top

          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 »

          Additional Parameters
          Parameter Latest Value Historic Range Additional Information
          Dissolved Oxygen 6.8 mg/l
          9/18/2013 10:50:00 AM
          Source: SJRWMD Water Quality Data
          0.1 - 15.6 mg/l
          6/5/1973 - 9/18/2013
          2,366 samples
            Return to Top

            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.

            Pollution

            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.

             
            Return to Top
             

            Advanced Data Features

            Files Graphs

            Data Download and Advanced Graphing Tool
            Download and/or graph water quality, hydrology, and rainfall trends using the data presented on the Atlas for use in your own analyses and reports.

             
            Return to Top
            An Edition of wateratlas.org
            Get Involved
            Education
            Popular Tools
            Connect With Us