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 CHNEP area.

View Data Details

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Note: Trends were prepared on November 2, 2021 using the latest available data. Results presented replace all previous editions.

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.

We are packaging up the raw data, maps, and help documentation now. The download link will be available soon.

Note: Trends were prepared on November 2, 2021 using the latest available data. Results presented replace all previous editions.

Map Legend

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

Map Legend

  • Increasing Trend, Larger Rate
  • Increasing Trend, Smaller Rate
  • No Trend
  • Decreasing Trend, Smaller Rate
  • Decreasing Trend, Larger Rate
  • CHNEP Watershed Boundaries

Contacts

For more information, please contact the Coastal & Heartland National Estuary Partnership:

Agency Summary

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

Agency Period of Record Data Last Loaded Max Year
Cape Coral Canal Watch 5/3/1995 - 3/3/2021 9/24/2021 2020
Charlotte Harbor Estuaries Volunteer Water Quality Monitoring Network 11/4/1996 - 8/2/2021 9/27/2021 2020
EPC Monthly Routine Water Monitoring 1/3/1972 - 3/11/2020 3/15/2020 2020
Water quality data collected by the City of Lakeland 8/10/1966 - 6/8/2021 9/24/2021 2020
Lee County Pondwatch 1/1/2000 - 12/1/2019 3/24/2020 2019
Lee County Environmental Laboratory 5/10/1989 - 11/16/2021 11/27/2021 2020
Sarasota County Coastal Creeks 2/24/1998 - 5/20/2021 9/24/2021 2020
Sarasota County Environmental Services Department Sampling Data 2/24/1998 - 10/13/2021 12/5/2021 2020
SWFWMD Hydrologic Data Section Data 5/1/1930 - 12/5/2021 12/7/2021 2016
USGS National Water Information System 10/25/1907 - 12/6/2021 12/6/2021 2020
FDEP Charlotte Harbor Aquatic/Buffer Preserves Sampling Data 11/4/1996 - 6/7/2021 9/24/2021 2020
FDEP South District Sampling Data 1/26/1999 - 7/12/2021 9/24/2021 2017
FDEP Watershed Monitoring Section 10/5/1998 - 4/14/2021 8/19/2021 2020
Florida LAKEWATCH 1/15/1988 - 6/29/2021 9/24/2021 2020
Manatee County Environmental Management Sampling Data 1/11/1995 - 12/15/2020 9/24/2021 2020
Polk County Parks & Natural Resources Department 7/25/1984 - 12/17/2015 12/18/2018
City of Sanibel, Natural Resources Department 1/22/2002 - 6/14/2021 9/24/2021 2020
SWFWMD Water Quality Sampling Data 1/1/1991 - 12/28/2020 8/19/2021 2020
FDEP Southwest Regional Operations Center 5/14/1997 - 3/8/2021 9/24/2021 2018
City of Cape Coral 3/17/1986 - 3/17/2021 9/24/2021 2020
Coastal Charlotte Harbor Monitoring Network (CCHMN) - Matlacha Pass 3/20/2002 - 3/23/2021 9/24/2021 2020
Peace River Manasota Regional Water Supply Authority (FL) 2/9/1993 - 12/21/2020 8/19/2021 2020