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Manatee County Water Atlas


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Ward Lake

Ward Lake

Map

located within Manatee River 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 Sites
Hydrology Sampling Sites
Other Sampling Sites
 

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
58 (Good)
12/9/2015
Source: Manatee County Environmental Management Sampling Data
BALANCED 30 (Good) - 79 (Poor)
1/11/1995 - 12/9/2015
302 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 »

    Nutrient Chemistry
    Parameter Latest Value Historic Range Additional Information
    Total Nitrogen (TN) 910.0 ug/l
    12/9/2015
    Source: Manatee County Environmental Management Sampling Data
    100.0 - 6,700.0 ug/L
    12/23/1981 - 12/9/2015
    459 samples
    Total Phosphorus (TP) 56.0 ug/L
    12/9/2015
    Source: Manatee County Environmental Management Sampling Data
    39.0 - 2,000.0 ug/L
    12/23/1981 - 12/9/2015
    530 samples
    Chlorophyll a,
    uncorrected for
    pheophytin help icon
    19.4 ug/L
    12/9/2015
    Source: Manatee County Environmental Management Sampling Data
    1.6 - 74.9 ug/L
    7/13/1998 - 12/9/2015
    292 samples
    Chlorophyll a,
    corrected for
    pheophytin help icon
    1.0 ug/L
    1/17/2007
    Source: Manatee County Environmental Management Sampling Data
    0.3 - 47.8 ug/L
    1/11/1995 - 1/17/2007
    83 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
      Parameter Latest Value Historic Range Additional Information
      Secchi Depth 4.3 ft
      12/9/2015
      Source: Manatee County Environmental Management Sampling Data
      0.0 ft - 11.2 ft
      1/11/1995 - 12/9/2015
      275 samples
      Turbidity 4.7 NTU
      12/9/2015
      Source: Manatee County Environmental Management Sampling Data
      0.1 NTU - 37.0 NTU
      1/11/1995 - 12/9/2015
      410 samples
      Light Attenuation NO DATA NO DATA NO DATA
       
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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 1 CFU/100ml
        12/9/2015
        Source: Manatee County Environmental Management Sampling Data
        0 - 2,800 CFU/100ml
        1/11/1995 - 12/9/2015
        330 samples
        Total Coliform 0 CFU/100ml
        12/11/2002
        Source: Manatee County Environmental Management Sampling Data
        0 - 94,000 CFU/100ml
        1/11/1995 - 12/11/2002
        161 samples
        Enterococcus 1 CFU/100ml
        12/9/2015
        Source: Manatee County Environmental Management Sampling Data
        1 - 1,119 CFU/100ml
        10/22/2001 - 12/9/2015
        50 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 8.1 mg/l
          12/9/2015
          Source: Manatee County Environmental Management Sampling Data
          0.3 - 364.0 mg/l
          5/9/1967 - 12/9/2015
          420 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.

            Pollution

            All natural water resources in this county are designated as Class III waters except for parts of the Manatee River and its tributaries upstream of the Rye Road Bridge and parts of the Braden River and its tributaries upstream of the Evers Reservoir dam which are Class I. The Gulf and Coastal Waters of Tampa Bay, including the coastal waters of Manatee County and the lower Manatee River which are all Class II. Class III waters are considered recreational use waters, which means that the water should be fishable and swimmable. Class II waters are predominately marine waters suitable for shellfish propagation and harvesting. Class I waters are freshwaters considered suitable for potable (drinkable) water supplies.
            Many water resources exist in Manatee County whose primary purposes are the treatment and conveyance of stormwater. These water resources include ditches, canals, and ponds that are designed and maintained for flood control or stormwater management. In addition, some water resources have been created for industrial wastewater treatment. These are identified in the "Industrial Waterbodies" theme on the Water Atlas map. State water classifications do not normally apply to the above water resources. None should be considered "fishable or swimmable." Learn more about impaired waters »

            Pollutants

            This waterbody has no known pollutants.

             
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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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