Implementation of adaptation initiatives and specific actions in US cities has increased in the approximately 5 years between the 3rd US National Climate Assessment   and the 4th Assessment , and adaptation responses have been observed widely . ICLEI-USA provides numerous resources for adaptation planning and implementation for cities, Indigenous Peoples and Regional Governments11. The Georgetown Center for Climate maintains a comprehensive resource for tracking adaptation progress for States12. As of 2021, 18 US states have completed climate adaptation plans, and six states have plans underway as of
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report