Water Quality Hotspots

The purpose of this "hotspot analysis" is to quickly identify where very high or very low values have been measured for selected water quality parameters, relative to other locations throughout Sarasota County. The map uses color-coding to represent relative frequency distribution, showing for each monitoring station where the median value for a parameter falls, relative to the median values at other stations of the same type. For example, "< 10%" means that fewer than 10% of stations have median values that are lower. "50-75%" means that at least half of all stations have a lower median value, and at least a quarter have a higher value.

The locations shown are the same as those displayed on the Water Quality Trends page of the Water Atlas. Taken together, the two pages can help you to gain a more complete perspective on water quality. For example, while the Water Quality Trends page might show that a particular measure of water quality is increasing at a certain monitoring location, the Water Quality Hotspots page may reveal that compared to the county as a whole, the values measured at that location are still very low.

This analysis will be performed annually, with results presented in summary form on the map, and detailed results downloadable as an Access database. Each year new results will be viewable on this page as they become available.

Nitrogen, Total - 2020

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Note: Most recent hotspot analyses were performed on April 1, 2021 using the latest available data. Results presented replace all previous editions.

The map shows water quality hotspots at the long-term monitoring stations spread throughout the Sarasota County area.

View Data Source Details

Map Legend

  • > 90%
  • 75–90%
  • 50–75%
  • 25–50%
  • 10–25%
  • < 10%
  • Sarasota County Watershed Boundaries

Map Legend

  • < 10%
  • 10–25%
  • 25–50%
  • 50–75%
  • 75–90%
  • > 90%
  • Sarasota County Watershed Boundaries

Map Legend

  • > 90%
  • 75–90%
  • 50–75%
  • 25–50%
  • 10–25%
  • < 10%
  • Sarasota County Watershed Boundaries

Downloads

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.

Download (ZIP)

Note: Most recent hotspot analyses were performed on April 1, 2021 using the latest available data. Results presented replace all previous editions.

Contacts

For more information, please contact:

Related Links

For more information, please see the links below: