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Tampa Bay Water Atlas


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Middle Tampa Bay Watershed

Middle 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
JUL-SEP 2022 1,234 ug/l No Data Available 317 ug/l 0.33 mg/l 7 14
APR-JUN 2022 965 ug/l No Data Available 311 ug/l 0.29 mg/l 27 58
JAN-MAR 2022 772 ug/l No Data Available 251 ug/l 0.35 mg/l 25 50
OCT-DEC 2021 945 ug/l 345.0 ug/l 301 ug/l 0.28 mg/l 30 52
JUL-SEP 2021 1,077 ug/l No Data Available 356 ug/l 0.33 mg/l 27 55
APR-JUN 2021 1,006 ug/l No Data Available 289 ug/l 0.26 mg/l 31 53
JAN-MAR 2021 1,029 ug/l No Data Available 278 ug/l 0.25 mg/l 29 53
OCT-DEC 2020 1,061 ug/l No Data Available 271 ug/l 0.27 mg/l 27 45
JUL-SEP 2020 939 ug/l No Data Available 460 ug/l 0.34 mg/l 22 39
APR-JUN 2020 973 ug/l No Data Available 438 ug/l 0.4 mg/l 24 30
JAN-MAR 2020 988 ug/l No Data Available 276 ug/l 0.16 mg/l 15 35
Five Year Seasonal Graph No Data Available
Five Year Graph of All Samples

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, FDEP Watershed Monitoring Section, IMC Agrico (Florida), Florida LAKEWATCH, Manatee County Environmental Management Sampling Data, 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, City of St. Petersburg, FDEP Watershed Monitoring Section, Hillsborough County Environmental Services Division, Environmental Protection Commission of Hillsborough County, Florida LAKEWATCH, Manatee County Environmental Management Sampling Data, 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
APR-JUN 2022 677 ug/l No Data Available 103 ug/l No Data Available 3 3
JAN-MAR 2022 937 ug/l No Data Available 81 ug/l No Data Available 3 6
OCT-DEC 2021 1,243 ug/l No Data Available 43 ug/l No Data Available 4 4
JUL-SEP 2021 988 ug/l No Data Available 87 ug/l No Data Available 6 12
APR-JUN 2021 1,209 ug/l No Data Available 108 ug/l No Data Available 11 22
JAN-MAR 2021 1,943 ug/l No Data Available 157 ug/l No Data Available 14 33
OCT-DEC 2020 1,749 ug/l No Data Available 136 ug/l No Data Available 11 11
APR-JUN 2020 1,232 ug/l No Data Available 10 ug/l No Data Available 5 5
JAN-MAR 2020 1,529 ug/l No Data Available 76 ug/l No Data Available 9 14
Five Year Seasonal Graph No Data Available No Data Available
Five Year Graph of All Samples No Data Available No Data Available

Source(s): EPC Water Quality data gathered from reports, LAKEWATCH Supplemental Water Quality Sampling, LAKEWATCH Volunteer Water Quality Monitoring, FDEP Historic Data from Legacy STORET, PINELLAS 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, City of St. Petersburg, FDEP Watershed Monitoring Section, Florida LAKEWATCH, FDEP - Southwest Regional Operations Center, FDEP - Watershed Assessment Section

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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 Middle 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
      Little Manatee River 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.
      Little Manatee River - South Fork 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.
      Sawgrass Lake East Outfall 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.

      Source(s): Not Available

      Source(s): Not Available
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