Hillsborough County Water Atlas


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Lower Hillsborough River Watershed

Lower Hillsborough 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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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
OCT-DEC 2023 352 ug/l No Data Available 140 ug/l 0.09 mg/l 6 18
JUL-SEP 2023 808 ug/l No Data Available 210 ug/l 0.2 mg/l 8 16
APR-JUN 2023 462 ug/l No Data Available 149 ug/l 0.1 mg/l 8 24
JAN-MAR 2023 482 ug/l No Data Available 99 ug/l 0.1 mg/l 8 24
OCT-DEC 2022 875 ug/l No Data Available 139 ug/l 0.17 mg/l 9 26
JUL-SEP 2022 672 ug/l No Data Available 99 ug/l 0.11 mg/l 9 25
APR-JUN 2022 485 ug/l No Data Available 103 ug/l 0.12 mg/l 8 24
JAN-MAR 2022 343 ug/l No Data Available 86 ug/l 0.11 mg/l 9 25
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, EPC Water Quality Data, EPC Water Quality data gathered from reports, LAKEWATCH Volunteer Water Quality Monitoring, FDEP Historic Data from Legacy STORET, FDEP Watershed Monitoring Section, Tampa Bay Water, FDEP Southwest Regional Operations Center, Stream Waterwatch Water Quality Data, Volunteer , USGS National Water Information System, FDEP Watershed Monitoring Section, Environmental Protection Commission of Hillsborough County, 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
JUL-SEP 2023 1,628 ug/l No Data Available 153 ug/l 0.03 mg/l 1 2
APR-JUN 2023 2,358 ug/l No Data Available 208 ug/l 0.03 mg/l 1 3
JAN-MAR 2023 2,402 ug/l No Data Available 156 ug/l 0.02 mg/l 1 3
OCT-DEC 2022 1,292 ug/l No Data Available 71 ug/l 0.02 mg/l 1 3
JUL-SEP 2022 1,110 ug/l No Data Available 81 ug/l 0.02 mg/l 1 3
APR-JUN 2022 988 ug/l No Data Available 77 ug/l 0.04 mg/l 1 3
JAN-MAR 2022 1,642 ug/l No Data Available 176 ug/l 0.1 mg/l 1 3
Five Year Seasonal Graph No Data Available
Five Year Graph of All Samples No Data Available

Source(s): EPC Water Quality data gathered from reports, LAKEWATCH Supplemental Water Quality Sampling, LAKEWATCH Volunteer Water Quality Monitoring, FDEP Watershed Monitoring Section, SWFWMD Water Quality Sampling Data (Ken Romie), SWFWMD Water Quality Monitoring Program Data, USGS National Water Information System, Environmental Protection Commission of Hillsborough County

  • Water Quality Sampling Locations - View a map showing the point locations of water quality monitoring stations which collect data being presented on the Water Atlas.
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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 Lower Hillsborough River Watershed. Learn More about Stream Flow »

    River Flows Whole River Range Flows Data by Segment Levels Whole River Range Levels Data By Segment
    Hillsborough 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.

    Source(s): Not Available

    Source(s): Not Available
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