Key Findings from the 2011 NWCA:
- Nearly half of wetland area (48%) is in good condition, 20% is in fair condition, and 32% is in poor condition.
- Physical disturbances to wetlands and their surrounding habitat are the most widespread problems across the country, such as compacted soil, ditching, and removal or loss of vegetation. Wetlands with high levels of compacted soil are about twice as likely to have poor plant communities.
- Nonnative plants are a problem across the country, particularly in the interior plains and west. 46% of wetland area in the interior plains and 72% of wetland area in the west have high or very high levels of stress from nonnative plants.