Extreme weather events are causing increasing levels of loss and damage, including to natural assets and associated nature-based tourism economies. This article provides estimates of the economic impacts on public conservation lands and waters in New Zealand's North Island from the flooding events of Cyclone Hale and Cyclone Gabrielle in early 2023. Losses and damage are estimated in four buckets: regional tourism GDP losses from cancelled visitor bookings at Department of Conservation accommodation facilities; lost business revenue of companies operating in protected areas; lost value of government-managed visitor assets; and regional tourism GDP losses from estimated reductions in visitor numbers at three iconic protected area sites. The research also attributes a proportion of these losses to climate change, assisting learning and future planning for New Zealand's conservation agency.