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U.S. EPA National Wetland Condition Assessment 2016
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2016 % of Area (Good)
Change†
Change in Pct. Points (2011 to 2016)
Estimates are not available for this combination of settings.
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†Change from the first survey in 2011 to the second survey in 2016.
* Indicates statistically significant difference (95% confidence) between surveys. Also indicated by darker color and solid fill, in both the slope graph in the middle column and the diamond in the right-hand column of the dashboard.
Data availability: (1) For microcystins and the three chemical indicators, due to improvements in sample collection protocols, the area assessed in 2016 changed compared to 2011. Change is not presented for these four indicators because it is not possible to determine whether changes are related to the increase in area assessed or an actual change in condition for the indicator. (2) Some subpopulations did not include enough sites to allow for statistically robust estimates. Enhancements EPA made to the survey design in NWCA 2021 will address this for most subpopulations.
U.S. Environmental Protection Agency (USEPA). 2023. National Wetland Condition Assessment 2016: The Second Collaborative Survey. Interactive NWCA Dashboard. https://wetlandassessment.epa.gov/dashboard/. Accessed on . Last modified on .
To learn more about NWCA 2016, read EPA's summary report. For detailed information about survey design, indicator development, and benchmark development for NWCA 2016, see EPA's technical support document.
2016 % of Wetland Area (Good)
Change†
Change in Pct. Points (2011 to 2016)
Estimates are not available for this combination of settings.
Please change your settings.
†Change from the first survey in 2011 to the second survey in 2016.
* Indicates statistically significant difference (95% confidence) between surveys. Also indicated by darker color and solid fill, in both the slope graph in the middle column and the diamond in the right-hand column of the dashboard.
Data availability: (1) For microcystins and the three chemical indicators, due to improvements in sample collection protocols, the area assessed in 2016 changed compared to 2011. Change is not presented for these four indicators because it is not possible to determine whether changes are related to the increase in area assessed or an actual change in condition for the indicator. (2) Some subpopulations did not include enough sites to allow for statistically robust estimates. Enhancements EPA made to the survey design in NWCA 2021 will address this for most subpopulations.
U.S. Environmental Protection Agency (USEPA). 2023. National Wetland Condition Assessment 2016: The Second Collaborative Survey. Interactive NWCA Dashboard. https://wetlandassessment.epa.gov/dashboard/. Accessed on . Last modified on .
To learn more about NWCA 2016, read EPA's summary report. For detailed information about survey design, indicator development, and benchmark development for NWCA 2016, see EPA's technical support document.
The Condition Matrix view is not available with acreage scale.
Please choose Percent scale.
Data availability: Some subpopulations did not include enough sites to allow for statistically robust estimates. Enhancements EPA made to the survey design in NWCA 2021 will address this for most subpopulations.
U.S. Environmental Protection Agency (USEPA). 2023. National Wetland Condition Assessment 2016: The Second Collaborative Survey. Interactive NWCA Dashboard. https://wetlandassessment.epa.gov/dashboard/. Accessed on . Last modified on .
To learn more about NWCA 2016, read EPA's summary report. For detailed information about survey design, indicator development, and benchmark development for NWCA 2016, see EPA's technical support document.
Relative Extent (% of Wetland Area in Poor Condition)
Relative Risk
Attributable Risk
Risk Estimates are not available with acreage scale.
Please choose Percent scale.
* Where attributable risk point estimates and confidence intervals are all equal to zero, “None” is displayed.
Data availability: Some subpopulations did not include enough sites to allow for statistically robust estimates.
U.S. Environmental Protection Agency (USEPA). 2023. National Wetland Condition Assessment 2016: The Second Collaborative Survey. Interactive NWCA Dashboard. https://wetlandassessment.epa.gov/dashboard/. Accessed on . Last modified on .
To learn more about NWCA 2016, read EPA's summary report. For detailed information about survey design, indicator development, and benchmark development for NWCA 2016, see EPA's technical support document.
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U.S. EPA National Wetland Condition Assessment 2016
Condition Categories Bases On Regional Thresholds
Condition
2016 % of Wetland Area
Change†
Change in Pct. Points (2011 to 2016)
†Change from the first survey in 2011 to the second survey in 2016.
* Indicates statistically significant difference (95% confidence) between surveys. Also indicated by darker color and solid fill, in both the slope graph in the middle column and the diamond in the right-hand column of the dashboard.
Data availability: (1) For microcystins and the three chemical indicators, due to improvements in sample collection protocols, the area assessed in 2016 changed compared to 2011. Change is not presented for these four indicators because it is not possible to determine whether changes are related to the increase in area assessed or an actual change in condition for the indicator. (2) Some subpopulations did not include enough sites to allow for statistically robust estimates. Enhancements EPA made to the survey design in NWCA 2021 will address this for most subpopulations.
U.S. Environmental Protection Agency (USEPA). 2023. National Wetland Condition Assessment 2016: The Second Collaborative Survey. Interactive NWCA Dashboard. https://wetlandassessment.epa.gov/dashboard/. Accessed on . Last modified on .
To learn more about NWCA 2016, read EPA's summary report. For detailed information about survey design, indicator development, and benchmark development for NWCA 2016, see EPA's technical support document.
