Pinellas County Water Atlas


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Old Tampa Bay Watershed

Old Tampa Bay 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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Map Legend

Water Quality sampling site
Hydrology sampling site
Closest Rainfall site
Rainfall sampling site
Multi-type sampling site
Other sampling site
 

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
APR-JUN 2019 1,215 ug/l No Data Available 310 ug/l 0.23 mg/l 1 1
JAN-MAR 2019 909 ug/l No Data Available 120 ug/l 0.08 mg/l 2 2
OCT-DEC 2018 974 ug/l No Data Available 173 ug/l 0.08 mg/l 17 33
JUL-SEP 2018 1,031 ug/l No Data Available 152 ug/l 0.09 mg/l 17 34
APR-JUN 2018 1,211 ug/l No Data Available 308 ug/l 0.1 mg/l 17 32
JAN-MAR 2018 825 ug/l No Data Available 120 ug/l 0.06 mg/l 17 26
OCT-DEC 2017 1,014 ug/l No Data Available 150 ug/l 0.09 mg/l 20 35
JUL-SEP 2017 999 ug/l No Data Available 165 ug/l 0.11 mg/l 24 48
APR-JUN 2017 874 ug/l No Data Available 228 ug/l 0.15 mg/l 19 34
JAN-MAR 2017 811 ug/l No Data Available 161 ug/l 0.09 mg/l 20 35
Five Year Seasonal Graph No Data Available
Five Year Graph of All Samples No Data Available

Source(s): Legacy Pinellas Water Quality Data, FDEP Historic Data from Legacy STORET, PINELLAS Water Quality Data, Biological Research Associates , FDEP Watershed Monitoring Section, FDEP Southwest Regional Operations Center, FDEP, Water Quality Standards and Special Projects (Florida), FDEP - Southwest Regional Operations Center

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
OCT-DEC 2018 700 ug/l No Data Available 70 ug/l 0.04 mg/l 2 4
JUL-SEP 2018 690 ug/l No Data Available 75 ug/l 0.04 mg/l 2 4
APR-JUN 2018 700 ug/l No Data Available 104 ug/l 0.06 mg/l 2 5
JAN-MAR 2018 687 ug/l No Data Available 103 ug/l 0.05 mg/l 2 3
OCT-DEC 2017 825 ug/l No Data Available 71 ug/l 0.05 mg/l 3 6
JUL-SEP 2017 753 ug/l No Data Available 58 ug/l 0.05 mg/l 3 9
APR-JUN 2017 819 ug/l No Data Available 78 ug/l 0.07 mg/l 3 7
JAN-MAR 2017 733 ug/l No Data Available 47 ug/l 0.04 mg/l 3 7
Five Year Seasonal Graph No Data Available
Five Year Graph of All Samples No Data Available

Source(s): LAKEWATCH Volunteer Water Quality Monitoring, Legacy Pinellas Water Quality Data, FDEP Historic Data from Legacy STORET, PINELLAS Water Quality Data, FDEP Watershed Monitoring Section, SWFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, SWFWMD Water Quality Monitoring Program Data

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    Groundwater Quantity: Aquifer Resource Indicator

    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.

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    Source: SWFWMD Hydrologic Data Section Data


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      Stream Flow and Levels

      Stream level and flow data for the Old Tampa Bay Watershed. Learn More about Stream Flow »

      River Flows Whole River Range Flows Data by Segment Levels Whole River Range Levels Data By Segment
      Alligator Creek In the past 30 days
      up Average river flow is faster than it has been historically.
      In the past 30 days
      up Average water levels are higher than they have been historically.
      Lake Tarpon Outfall Canal In the past 30 days
      up Average river flow is faster than it has been historically.
      In the past 30 days
      down Average water levels are lower than they have been historically.
      Longbranch Creek In the past 30 days
      up Average river flow is faster than it has been historically.
      In the past 30 days
      up Average water levels are higher than they have been historically.
      Pinebrook Canal 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.
      Roosevelt Canal In the past 30 days
      up Average river flow is faster than it has been historically.
      In the past 30 days
      up Average water levels are higher than they have been historically.

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

      Source(s): Not Available
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