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 - Period of Record (All Available Data)

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 raw and calculated data, methods documentation, and an R script.

Download (ZIP, ~ 10MB)

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 2021
CCHMN - City of Cape Coral 3/17/1986 - 5/19/2022 10/3/2022 2022
CCHMN - Coastal Charlotte Harbor Monitoring Network (CCHMN) - Matlacha Pass 3/20/2002 - 8/25/2022 10/3/2022 2022
CCHMN - Lee County Environmental Laboratory 5/10/1989 - 9/7/2022 10/1/2022 2022
CCHMN - SWFWMD Water Quality Sampling Data 1/1/1991 - 2/3/2022 10/3/2022 2022
Charlotte Harbor Estuaries Volunteer Water Quality Monitoring Network 11/4/1996 - 5/2/2022 6/27/2022 2022
City of Sanibel, Natural Resources Department 1/22/2002 - 12/9/2021 10/3/2022 2021
EPC Monthly Routine Water Monitoring 1/3/1972 - 3/11/2020 3/15/2020 2020
FDEP Charlotte Harbor Aquatic/Buffer Preserves Sampling Data 11/4/1996 - 7/5/2022 10/3/2022 2022
FDEP South District Sampling Data 1/26/1999 - 7/27/2022 10/3/2022 2022
FDEP Southwest Regional Operations Center 5/14/1997 - 8/3/2022 10/3/2022 2022
FDEP Watershed Monitoring Section 10/5/1998 - 8/10/2022 10/3/2022 2022
Florida LAKEWATCH 1/15/1988 - 8/1/2022 10/3/2022 2022
Lee County Pondwatch 1/1/2000 - 12/1/2019 3/24/2020 2019
Manatee County Environmental Management Sampling Data 1/11/1995 - 6/23/2022 10/3/2022 2022
Peace River Manasota Regional Water Supply Authority (FL) 2/9/1993 - 12/28/2021 10/3/2022 2021
Polk County Parks & Natural Resources Department 7/25/1984 - 9/1/2022 10/3/2022 2022
Sarasota County Coastal Creeks 2/24/1998 - 12/22/2021 2/24/2022 2021
Sarasota County Environmental Services Department Sampling Data 2/24/1998 - 8/3/2022 10/3/2022 2022
SWFWMD Hydrologic Data Section Data 5/1/1930 - 10/3/2022 10/3/2022 2022
USGS National Water Information System 10/25/1907 - 10/3/2022 10/3/2022 2022
Water quality data collected by the City of Lakeland 8/10/1966 - 6/8/2021 9/24/2021 2021