Ecoregional Results - National Lakes Assessment 2022
For each ecoregion, the National Lakes Assessment 2022 assessed information on a number of important indicators related to lake condition.
To highlight key findings from each ecoregion, the user can examine and compare results across condition categories for:
- trophic state
- key stressors
- changes in lakes between the 2017 and 2022 report*
Results for the "good" category for all indicators are also presented in a graphical format to allow users to examine and compare results more fully across this category.
Additional ecoregion-level results are available on our interactive NLA Dashboard, including information on individual indicators across all four condition categories. General descriptions of the ecoregions are available on the NARS Ecoregions page.
- Coastal Plains
- Northern Appalachians
- Northern Plains
- Southern Appalachians
- Southern Plains
- Temperate Plains
- Upper Midwest
- Western Mountains
- Xeric
- Return to NLA Results
*Changes are presented for lakes 4 hectares and larger only because lakes between 1 and 4 hectare were not assessed in 2007.