Orange County Water Atlas


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Lake Irma

Irma, Lake

Map

located within Little Econ 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
33 (Good)
3/11/2019 10:40:00 AM
Source: Orange County Surface Water Quality
PHOSPHORUS 27 (Good) - 70 (Poor)
10/17/1994 - 3/11/2019
260 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) 520.0 ug/l
    3/11/2019 10:40:00 AM
    Source: Orange County Surface Water Quality
    4.0 - 1,540.0 ug/L
    11/13/1972 - 3/11/2019
    310 samples
    Total Phosphorus (TP) 8.0 ug/L
    6/3/2019 10:25:00 AM
    Source: Orange County Surface Water Quality
    1.0 - 290.0 ug/L
    7/3/1969 - 6/3/2019
    362 samples
    Chlorophyll a,
    uncorrected for
    pheophytin help icon
    2.3 ug/L
    6/3/2019 10:25:00 AM
    Source: Orange County Surface Water Quality
    0.6 - 90.0 ug/L
    10/17/1994 - 6/3/2019
    284 samples
    Chlorophyll a,
    corrected for
    pheophytin help icon
    2.2 ug/L
    6/3/2019 10:25:00 AM
    Source: Orange County Surface Water Quality
    0.6 - 77.7 ug/L
    2/17/2005 - 6/3/2019
    68 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 8.0 ft
      6/3/2019 10:25:00 AM
      Source: Orange County Surface Water Quality
      0.3 ft - 18.0 ft
      3/16/1970 - 6/3/2019
      378 samples
      Turbidity 0.8 NTU
      6/3/2019 10:25:00 AM
      Source: Orange County Surface Water Quality
      0.1 NTU - 22.0 NTU
      11/13/1972 - 6/3/2019
      131 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 4 CFU/100ml
        6/3/2019 10:25:00 AM
        Source: Orange County Surface Water Quality
        0 - 300 CFU/100ml
        6/5/1973 - 6/3/2019
        79 samples
        Total Coliform 40 CFU/100ml
        3/27/2007
        Source: Orange County Surface Water Quality
        2 - 3,000 CFU/100ml
        7/14/1970 - 3/27/2007
        25 samples
        Enterococcus NO DATA NO DATA NO DATA
        E. coli 2 CFU/100ml
        6/3/2019 10:25:00 AM
        Source: Orange County Surface Water Quality
        1 - 36 CFU/100ml
        7/11/2017 - 6/3/2019
        12 samples

          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 7.2 mg/l
          6/3/2019 10:25:00 AM
          Source: Orange County Surface Water Quality
          1.4 - 10.9 mg/l
          7/3/1969 - 6/3/2019
          136 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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