Water Quality Trends

Explore short- and long-term trends for those water quality parameters that are most useful in evaluating the extent of nutrient pollution.

Total Nitrogen for the Period of Record

The map below shows the trend being experienced at the long-term monitoring stations spread throughout the Hillsborough County area.

View Data Details

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Note: Trends were prepared on September 20, 2021 using the latest available data.

Download Trend Analysis Output

You can download raw data for your own analysis by clicking on the link below. The data is formatted as a ZIP file containing raw and calculated data, methods documentation, and an R script.

Download (ZIP, ~ 1MB)

Note: Trends were prepared on September 20, 2021 using the latest available data.

Archived Analyses

Map Legend

  • Increasing Trend, Larger Rate Improving
  • Increasing Trend, Smaller Rate Improving
  • No Trend
  • Decreasing Trend, Smaller Rate Declining
  • Decreasing Trend, Larger Rate Declining
  • Hillsborough County Watershed Boundaries

Map Legend

  • Increasing Trend, Larger Rate Declining
  • Increasing Trend, Smaller Rate Declining
  • No Trend
  • Decreasing Trend, Smaller Rate Improving
  • Decreasing Trend, Larger Rate Improving
  • Hillsborough County Watershed Boundaries

Map Legend

  • Increasing Trend, Larger Rate
  • Increasing Trend, Smaller Rate
  • No Trend
  • Decreasing Trend, Smaller Rate
  • Decreasing Trend, Larger Rate
  • Hillsborough County Watershed Boundaries

Contacts

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Agency Summary

Data collected by the following agencies were used in preparation of these reports.

Agency Period of Record Data Last Loaded Max Year
Hillsborough County Environmental Services Division 1/28/2019 - 3/18/2021 6/6/2022 2020