Hillsborough County Water Atlas


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Alafia River Watershed

Alafia 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
JUL-SEP 2022 1,370 ug/l No Data Available 930 ug/l 0.83 mg/l 19 19
APR-JUN 2022 1,023 ug/l 383.7 ug/l 843 ug/l 0.73 mg/l 42 73
JAN-MAR 2022 1,215 ug/l 530.8 ug/l 653 ug/l 0.58 mg/l 46 85
OCT-DEC 2021 1,321 ug/l 460.8 ug/l 852 ug/l 0.64 mg/l 48 86
JUL-SEP 2021 1,309 ug/l 307.2 ug/l 994 ug/l 62.16 mg/l 51 114
APR-JUN 2021 1,127 ug/l 337.8 ug/l 713 ug/l 72.24 mg/l 44 104
JAN-MAR 2021 1,210 ug/l 423.8 ug/l 903 ug/l 56.02 mg/l 56 117
OCT-DEC 2020 1,233 ug/l 332.1 ug/l 931 ug/l 70.19 mg/l 54 121
JUL-SEP 2020 1,187 ug/l 234.6 ug/l 1,255 ug/l 147.88 mg/l 55 104
APR-JUN 2020 1,094 ug/l 348.8 ug/l 998 ug/l 91.02 mg/l 34 51
JAN-MAR 2020 1,307 ug/l No Data Available 545 ug/l 25.36 mg/l 47 73
Five Year Seasonal Graph
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, LAKEWATCH Volunteer Water Quality Monitoring, FDEP Historic Data from Legacy STORET, Polk County Parks & Natural Resources Division, FDEP Watershed Monitoring Section, IMC Agrico (Florida), SWFWMD Water Quality Sampling Data, Tampa Bay Water, 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, Environmental Protection Commission of Hillsborough County, Polk County Parks & Natural Resources Department, Southwest Florida Water Management District, Tampa Bay Water, 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 2022 1,273 ug/l No Data Available 522 ug/l No Data Available 2 2
APR-JUN 2022 2,073 ug/l No Data Available 251 ug/l No Data Available 5 11
JAN-MAR 2022 2,160 ug/l No Data Available 266 ug/l No Data Available 5 5
OCT-DEC 2021 1,793 ug/l No Data Available 144 ug/l No Data Available 5 8
JUL-SEP 2021 1,730 ug/l No Data Available 207 ug/l No Data Available 8 11
APR-JUN 2021 2,638 ug/l No Data Available 292 ug/l 234.5 mg/l 5 8
JAN-MAR 2021 2,086 ug/l No Data Available 264 ug/l 168.5 mg/l 5 5
OCT-DEC 2020 1,570 ug/l No Data Available 225 ug/l 266.5 mg/l 5 5
JUL-SEP 2020 1,990 ug/l No Data Available 173 ug/l 292 mg/l 7 10
APR-JUN 2020 1,515 ug/l No Data Available 437 ug/l 173 mg/l 2 2
JAN-MAR 2020 1,680 ug/l No Data Available 172 ug/l 130.5 mg/l 7 11
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, Polk County Parks & Natural Resources Division, Florida Fish and Wildlife Conservation Commission Water Quality Data, FDEP Watershed Monitoring Section, SWFWMD Water Quality Sampling Data, FDEP Southwest Regional Operations Center, SWFWMD Water Quality Monitoring Program Data, USGS National Water Information System, Hillsborough County Environmental Services Division, Florida LAKEWATCH, Polk County Parks & Natural Resources Department, FDEP - Southwest Regional Operations Center, FDEP - Watershed Assessment Section

  • 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 Alafia River Watershed. Learn More about Stream Flow »

    River Flows Whole River Range Flows Data by Segment Levels Whole River Range Levels Data By Segment
    Little Alafia 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): Not Available

    Source(s): Not Available
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