Sarasota County Water Atlas


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Myakka River

Myakka River

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located within Myakka River Watershed

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Description

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

The data on this page are designed to give you a picture of the total health of this waterbody. Click the "Learn More" text to learn more about each parameter shown and how it indicates Water Quality.

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Water Quality Sampling Sites
Hydrology Sampling Sites
Other Sampling Sites
 

Water Quality Index

Water Quality Index (WQI) is an average of 5 different parameters giving a river a good (0-45), fair (45-60), or poor (60+) rating. Learn more about the Water Quality Index »

 
Water Quality Index

Whole River Range

48 - 71
Fair - Poor
Oct-Dec 2016

Data by River Segment



 
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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 »

Nutrient Chemistry
Parameter Latest Value Historic Range Additional Information
Total Nitrogen (TN) 2,087.0 ug/l
12/13/2016
Source: Sarasota County Coastal Creeks
110.0 - 162,300.0 ug/L
6/11/1970 - 12/13/2016
3,058 samples
Total Phosphorus (TP) 498.0 ug/L
12/13/2016
Source: Sarasota County Coastal Creeks
20.0 - 3,680.0 ug/L
10/2/1962 - 12/13/2016
3,387 samples
Chlorophyll a,
uncorrected for
pheophytin help icon
3.6 ug/L
9/7/2016
Source: FDEP Ambient Monitoring Sampling Data
0.0 - 270.0 ug/L
1/13/1975 - 9/7/2016
1,015 samples
Chlorophyll a,
corrected for
pheophytin help icon
3.8 ug/L
12/13/2016
Source: Sarasota County Coastal Creeks
0.0 - 260.0 ug/L
10/26/1981 - 12/13/2016
1,862 samples
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    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

    Whole River Range

    As of 12/11/2013,
    up Average turbidity is higher than it has been historically.

    Data by River Segment


     
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      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 110 CFU/100ml
      12/13/2016
      Source: Sarasota County Coastal Creeks
      1 - 49,000 CFU/100ml
      9/4/1973 - 12/13/2016
      6,230 samples
      Total Coliform 120 CFU/100ml
      1/26/2004
      Source: FDEP Southwest District Sampling Data
      1 - 41,000 CFU/100ml
      9/4/1973 - 1/26/2004
      674 samples
      Enterococcus 190 CFU/100ml
      12/2/2015
      Source: Manatee County Environmental Management Sampling Data
      1 - 8,300 CFU/100ml
      1/6/2000 - 12/2/2015
      229 samples
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        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 6.1 mg/l
        12/13/2016
        Source: Sarasota County Coastal Creeks
        -60.4 - 817.0 mg/l
        5/1/1967 - 12/13/2016
        9,861 samples
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          Salinity

          Salinity
          Salinity measures the amount of salts dissolved in water. An estuary can exhibit a change in salinity throughout its length as fresh water entering from the tributaries mixes with seawater from the ocean. Learn more about salinity »
          Parameter Latest Value Historic Range Additional Information
          Salinity 0.3 ppt
          12/13/2016
          Source: Sarasota County Coastal Creeks
          0.0 - 32.3 ppt
          6/12/1973 - 12/13/2016
          6,242 samples
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          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.

          Impaired

          This waterbody is impaired according to the State of Florida's Impaired Waters Rule (IWR) Chapter 62-303 F.A.C. that governs the Total Maximum Daily Loads (TMDL) Program or according to the U.S. Environmental Protection Agency (EPA). Identification of Impaired Surface Waters (IWR) is a new scientific approach for guiding Florida Department of Environmental Protection process for identifying and prioritizing impaired surface waters in Florida. The rule evaluates whether waters meet their designated uses for a particular analyte, which include aquatic life use support, primary contact and recreation use support, fish and shellfish consumption use support, and drinking water use support. 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. As part of the terms of a court order related to the 1998 303(d) list of impaired waters, some waters are listed as impaired by EPA but not listed by the State of Florida. Learn more about impaired waters »

          Pollutants

          This waterbody has been associated with the following WBIDs deemed impaired by the Florida Department of Environmental Protection:

          WBID Basin Impairment(s)
          1869B MYAKKA RIVER (UPPER SEGMENT) FECAL COLIFORM, MERCURY (IN FISH TISSUE)
          1869C MYAKKA RIVER (UPPER SEGMENT) MERCURY (IN FISH TISSUE)
          1877A MYAKKA RIVER (UPPER SEGMENT) FECAL COLIFORM, MERCURY (IN FISH TISSUE)
          1877B MYAKKA RIVER (UPPER SEGMENT) MERCURY (IN FISH TISSUE)
          1877C MYAKKA RIVER (NORTH FORK) MERCURY (IN FISH TISSUE)
          1981B MYAKKA RIVER DISSOLVED OXYGEN, MERCURY (IN FISH TISSUE), NUTRIENTS (CHLOROPHYLL-A)

          Source(s): Florida Department of Environmental Protection


          This waterbody has been associated with the following WBIDs deemed impaired by the Environmental Protection Agency's 303(d) list:

          WBID Basin Impairment(s) EPA Details
          1869B MYAKKA RIVER (UPPER SEGMENT) FECAL COLIFORM, MERCURY IN FISH TISSUE View additional EPA information »
          1869C MYAKKA RIVER (UPPER SEGMENT) DISSOLVED OXYGEN, MERCURY IN FISH TISSUE View additional EPA information »
          1877A MYAKKA RIVER (UPPER SEGMENT) DISSOLVED OXYGEN, FECAL COLIFORM, MERCURY IN FISH TISSUE View additional EPA information »
          1877B MYAKKA RIVER (UPPER SEGMENT) MERCURY IN FISH TISSUE View additional EPA information »
          1877C MYAKKA RIVER (NORTH FORK) DISSOLVED OXYGEN, MERCURY IN FISH TISSUE View additional EPA information »
          1981B MYAKKA RIVER CHLOROPHYLL-A, DISSOLVED OXYGEN, MERCURY IN FISH TISSUE View additional EPA information »

          Source(s): US Environmental Protection Agency

           
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          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.

           
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