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 Orange County area.

View Data Source Details

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Note: Trends were prepared on August 27, 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 a Microsoft Access database and multiple PDF maps, and R script.

Download (ZIP, ~ 154MB)

Note: Trends were prepared on August 27, 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
  • Orange 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
  • Orange County Watershed Boundaries

Map Legend

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

Contacts

For more information, please contact:

Data Source Summary

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

Datasource Period of Record Data Last Loaded Max Year
Orange County Environmental Protection Division (WIN_21FLORAN) 9/4/2012 - 3/30/2021 9/25/2021 2020
City of Orlando Ambient Surface Water Quality (WIN_21FLORL) 1/4/2017 - 12/22/2020 9/25/2021 2020