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Tampa Bay Water Atlas


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Coastal Old Tampa Bay Watershed

Coastal 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 2022 750 ug/l No Data Available 60 ug/l 0.05 mg/l 25 25
JAN-MAR 2022 830 ug/l No Data Available 78 ug/l 0.13 mg/l 43 73
OCT-DEC 2021 866 ug/l No Data Available 132 ug/l 0.05 mg/l 48 98
JUL-SEP 2021 941 ug/l No Data Available 133 ug/l 0.06 mg/l 51 104
APR-JUN 2021 812 ug/l No Data Available 168 ug/l 0.05 mg/l 49 97
JAN-MAR 2021 819 ug/l No Data Available 119 ug/l 0.04 mg/l 50 91
OCT-DEC 2020 846 ug/l No Data Available 131 ug/l 0.04 mg/l 50 99
JUL-SEP 2020 901 ug/l No Data Available 149 ug/l 0.06 mg/l 46 95
APR-JUN 2020 762 ug/l No Data Available 179 ug/l 0.07 mg/l 30 40
JAN-MAR 2020 858 ug/l No Data Available 129 ug/l 0.03 mg/l 28 44
Five Year Seasonal Graph No Data Available
Five Year Graph of All Samples No Data Available

Source(s): Quarterly Routine Water Monitoring, EPC Monthly Routine Water Monitoring, Hillsborough County Lake Assessments, EPC Water Quality Data, EPC Water Quality data gathered from reports, Hillsborough County Environmental Management Division, LAKEWATCH Volunteer Water Quality Monitoring, Legacy Pinellas Water Quality Data, FDEP Historic Data from Legacy STORET, PINELLAS Water Quality Data, Biological Research Associates , FDEP Watershed Monitoring Section, Pinellas County Department of Environmental Management, SWFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, FDEP, Water Quality Standards and Special Projects (Florida), Stream Waterwatch Water Quality Data, Volunteer , USGS National Water Information System, FDEP Watershed Monitoring Section, Hillsborough County Environmental Services Division, Environmental Protection Commission of Hillsborough County, Florida LAKEWATCH, Pinellas County Department of Environmental Management, Southwest Florida Water Management District, 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
JAN-MAR 2022 787 ug/l No Data Available 26 ug/l No Data Available 49 52
OCT-DEC 2021 764 ug/l No Data Available 32 ug/l No Data Available 55 66
JUL-SEP 2021 850 ug/l No Data Available 32 ug/l No Data Available 85 122
APR-JUN 2021 860 ug/l No Data Available 28 ug/l No Data Available 77 121
JAN-MAR 2021 752 ug/l No Data Available 32 ug/l No Data Available 83 108
OCT-DEC 2020 739 ug/l No Data Available 33 ug/l No Data Available 55 76
JUL-SEP 2020 867 ug/l No Data Available 27 ug/l No Data Available 62 91
APR-JUN 2020 736 ug/l No Data Available 26 ug/l No Data Available 58 77
JAN-MAR 2020 794 ug/l No Data Available 22 ug/l No Data Available 109 228
Five Year Seasonal Graph No Data Available
Five Year Graph of All Samples No Data Available

Source(s): Hillsborough County Lake Assessments, EPC Water Quality data gathered from reports, Hillsborough County Environmental Management Division, LAKEWATCH Supplemental Water Quality Sampling, LAKEWATCH Volunteer Water Quality Monitoring, Legacy Pinellas Water Quality Data, FDEP Historic Data from Legacy STORET, PINELLAS Water Quality Data, Florida Fish and Wildlife Conservation Commission Water Quality Data, FDEP Watershed Monitoring Section, SWFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, FDEP, Water Quality Standards and Special Projects (Florida), SWFWMD Water Quality Sampling Data (Ken Romie), SWFWMD Water Quality Monitoring Program Data, USGS National Water Information System, FDEP Watershed Monitoring Section, Hillsborough County Environmental Services Division, Florida LAKEWATCH, Pinellas County Department of Environmental Management, Southwest Florida Water Management District, FDEP - Southwest Regional Operations Center

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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 Coastal 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
      Brooker Creek In the past 30 days
      down Average river flow is slower than it has been historically.
      In the past 30 days
      up Average water levels are higher than they have been historically.
      Brushy Creek In the past 30 days
      down Average river flow is slower than it has been historically.
      In the past 30 days
      up Average water levels are higher than they have been historically.
      Double Branch 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
      down Average water levels are lower than they have been historically.
      Henry Street 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
      down Average water levels are lower than they have been historically.
      Rocky 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.
      Sweetwater 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.
      Curiosity Creek In the past 30 days
      same Average river flow is the same as it has been historically.
      In the past 30 days
      same Average water levels are the same as they have been historically.
      Lake Magdalene Outlet 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.
      Channel G 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.
      Alligator Creek In the past 30 days
      same Average river flow is the same as 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
      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.
      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.

      Source(s): Not Available

      Source(s): Not Available
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