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Manatee River Watershed

Manatee River Watershed

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Description

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

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Water Quality Sampling Sites
Hydrology Sampling Sites
Other Sampling Sites
 

Groundwater Quantity: Aquifer Resource Indicator

Groundwater Quantity

Southwest Florida Water Management District calculates the Aquifer Resource Indicator (ARI) for their three groundwater regions each month. The ARI was created to provide the public with a gauge of groundwater levels in their area, so they can develop an understanding of the severity and cycles of drought and recovery. The three regions include: North (Citrus, Hernando, Lake, Levy, Marion and Sumter counties), Central (Hillsborough, Pasco, Pinellas, and Polk counties), and South (Charlotte, DeSoto, Hardee, Highlands, Manatee, and Sarasota counties). Learn More about the Aquifer Resource Indicator >>

To determine the ARI for a region, each well is compared weekly to its respective low-normal value and the difference is calculated. The weekly differences are reduced to a monthly value for all monitoring wells within a region, and the resulting ARI value represents how far water levels in the aquifer must rise or fall to reach their respective low-normal values.

One Year Graph of ARI
Source: SWFWMD Hydrologic Data Section Data
Click here to view a period of record graph for the central, north, and south groundwater regions


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    Water Quality

    Water Quality

    The following data are summarized as seasonal average values for lake and river sampling locations located within the watershed. While these data are useful to serve as a general picture of watershed health, these data must be viewed with caution because these samples have been taken from ecologically different water resources.

    Rivers:
    Samples from most rivers located in this watershed are averaged as part of these data summaries.
    Season Total Nitrogen Nitrate (NO3) Total Phosphorus Orthophosphate Number of Sample Stations Number of Samples
    JAN-MAR 2016 No Data Available 355.2 ug/l 377 ug/l 0.33 mg/l 16 16
    OCT-DEC 2015 No Data Available 400.9 ug/l 283 ug/l 0.29 mg/l 33 88
    JUL-SEP 2015 No Data Available 295.0 ug/l 374 ug/l 0.39 mg/l 34 94
    APR-JUN 2015 898 ug/l 336.5 ug/l 313 ug/l 0.33 mg/l 33 79
    JAN-MAR 2015 No Data Available 366.8 ug/l 269 ug/l 0.31 mg/l 33 95
    OCT-DEC 2014 No Data Available 515.5 ug/l 268 ug/l 0.28 mg/l 36 98
    JUL-SEP 2014 No Data Available 471.6 ug/l 311 ug/l 0.33 mg/l 34 95
    APR-JUN 2014 No Data Available 351.2 ug/l 326 ug/l 0.33 mg/l 35 83
    JAN-MAR 2014 No Data Available 358.9 ug/l 267 ug/l 0.33 mg/l 34 95
    Five Year Seasonal Graph
    Five Year Graph of All Samples

    Source(s): FDEP Historic Data from Legacy STORET, Lower watershed program (LWP), FDEP Ambient Monitoring Sampling Data, Manatee County Environmental Management Sampling Data, SWFWMD Water Quality Sampling Data (STORET), FDEP Southwest District Sampling Data, USGS National Water Information System

    Lakes:
    Samples from most lakes located in this watershed are averaged as part of these data summaries.
    Season Total Nitrogen Nitrate (NO3) Total Phosphorus Orthophosphate Number of Sample Stations Number of Samples
    JAN-MAR 2016 No Data Available 354.5 ug/l 359 ug/l 0.33 mg/l 2 2
    OCT-DEC 2015 No Data Available 287.7 ug/l 216 ug/l 0.32 mg/l 4 12
    JUL-SEP 2015 No Data Available 148.0 ug/l 222 ug/l 0.32 mg/l 4 12
    APR-JUN 2015 No Data Available 140.5 ug/l 167 ug/l 0.23 mg/l 4 12
    JAN-MAR 2015 No Data Available 362.7 ug/l 222 ug/l 0.31 mg/l 4 12
    OCT-DEC 2014 No Data Available 413.0 ug/l 238 ug/l 0.34 mg/l 4 11
    JUL-SEP 2014 No Data Available No Data Available 292 ug/l 0.28 mg/l 3 9
    APR-JUN 2014 No Data Available 133.5 ug/l 206 ug/l 0.2 mg/l 4 10
    JAN-MAR 2014 No Data Available 258.8 ug/l 202 ug/l 0.22 mg/l 4 12
    Five Year Seasonal Graph No Data Available
    Five Year Graph of All Samples No Data Available

    Source(s): Lower watershed program (LWP), FDEP Ambient Monitoring Sampling Data, Manatee County Environmental Management Sampling Data, USGS National Water Information System

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      Stream Flow and Levels

      Stream level and flow data for the Manatee River Watershed. Learn More about Stream Flow »

      Stream Flow and Levels
      River Flows Whole River Range Flows Data by Segment Levels Whole River Range Levels Data By Segment
      Cypress Strand In the past 30 days
      NO DATA
      Recent river flow data is unavailable.
        No data table or graph available
      In the past 30 days
      up Average water levels are higher than they have been historically.
      Gamble Creek In the past 30 days
      down Average river flow is slower than it has been historically.
      In the past 30 days
      down Average water levels are lower than they have been historically.
      Wares Creek In the past 30 days
      NO DATA
      Recent river flow data is unavailable.
        No data table or graph available
      In the past 30 days
      up Average water levels are higher than they have been historically.
      Upper Manatee River In the past 30 days
      up Average river flow is faster than it has been historically.
      In the past 30 days
      NO DATA
      Recent water level data is unavailable.
        No data table or graph available
      Braden River In the past 30 days
      NO DATA
      Recent river flow data is unavailable.
        No data table or graph available
      In the past 30 days
      up Average water levels are higher than they have been historically.

      Source(s): Hillsborough County Environmental Protection Commission, Manatee County Department of Environmental Management, Southwest Florida Water Management District, Southwest Florida Water Management District, USGS National Water Information System

      Source(s): Not Available
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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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