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Johns Lake

Johns Lake


located within Ocklawaha River Watershed

Associated Names

  • There are no associated names for this body of water.

2018 Fish Advisory In Effect

This water resource has a fish advisory in effect. Please see the Florida Fish Advisories publication.

Water Resource Characteristics

Size and Volume

Surface Area 2,439 acres
Mean Depth 12.0 feet
Maximum Depth Not Available
Approximate Volume 9,139,643,794 gallons


Watershed Ocklawaha River Watershed
Latitude 28° 31' 43"
Longitude 81° 37' 10"
Section-Township-Range 33-22-27
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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

    Data Summary

    Data Summary Icon

    This water resource is monitored by 25 sampling locations, which have collected a total of 25,192 samples ranging from 7/1/1959 to 3/11/2019. The sites sampling this water resource are:

    Datasource (click for details)Station ID
    FDEP Central Regional Operations Center20020276
    FDEP Central Regional Operations Center20020277
    FDEP Central Regional Operations Center20020278
    FDEP Central Regional Operations Center20020279
    FDEP Central Regional Operations Center20020280
    FDEP Central Regional Operations Center20020505
    FDEP Central Regional Operations Center20020506
    FDEP Watershed Monitoring Section36619
    FDEP Watershed Monitoring Section38198
    Lake County Surface Water Quality889
    LAKEWATCH Supplemental Water Quality SamplingJohn's-Orange
    LAKEWATCH Volunteer Water Quality MonitoringJohn's-Orange
    Legacy Orange County Surface Water QualityA50E
    Legacy Orange County Surface Water QualityA50W
    Orange County Environmental Protection DivisionAAL99
    Orange County Stormwater Water Levels SamplingJOHNS
    Orange County Surface Water QualityA50E
    Orange County Surface Water QualityA50W
    Orange County Surface Water QualityA50E
    Orange County Surface Water QualityA50W
    SJRWMD Water Quality Data404626
    SJRWMD Water Quality Data56422
    SJRWMD Water Quality Data56423
    USGS National Water Information System02237540
    Watershed Action Volunteer Water Quality Data845

    Report Algal Blooms and Other Environmental Issues


    Every one of us contributes pollution to our streams, lakes, bays and oceans. The wastewater, dirt, and debris of our lives eventually drains downstream. Each of us must minimize our contribution to keep our waterways healthy and enjoyable. Some materials are powerful pollutants like raw sewage, petroleum, or pesticides, but even natural, biodegradable plant materials can add nitrogen to water resources and cause algal blooms and fish kills. Please use the information below to assist you in reporting an incident to the correct agency. Learn More about Reporting Pollution »

    To Report Algal Blooms and Other Environmental Issues:

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    Who to call about environmental concerns and to report environmentally harmful activities. For potentially life threatening emergencies dial 911.

    Concern or Activity Contact(s)
    Dangerous Boating / Accidents

    FWCC, Division of Boating Safety
    1-850-488-5600 (to report an accident) or
    1-888-404-3922 (to report unsafe boating)

    Algal Blooms

    FDEP 1-850-305-3903

    Fish Kill

    FWCC, Fish Kills

    General Concerns/Complaints


    Industrial Waste/Spill

    FDEP State Watch Office

    Injured Wildlife or Illegal Activities

    FWCC, Wildlife Violations
    or via cell phone, dial *FWC or #FWC depending on service carrier

    Shoreline Alterations, Wetland Impacts


    Aquatic Plant Removal


    Water Pollution, Residuals Landspreading


    Wetlands Issues/Dredge and Fill


    Source(s): USF Water Institute

    FWCC - Fish and Wildlife Conservation Commission
    FDEP - Florida Department of Enviromental Protection

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      Get Involved


      Lake County needs you to help manage and protect its natural resources! Fill out this form, and we will contact you with more information about becoming a volunteer. Learn more about volunteering »

      1 volunteer on Johns Lake has submitted a water quality sample for this water resource within the last 18 months.

      Become a Volunteer! Click here to sign up for volunteering.

      Click here to learn more about Lake County's Adopt-a-Lake Program.

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      Historic Information

      Historic Information

      Visit the following links to view historical information on this water resource:

      Learn more about historic information »
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      Related Links

      Related Links
      Visit the Digital Library to view additional documents related to this water resource – Once at the Digital Library, type in a specific keyword such as "water quality" to narrow the search.
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