Infrastructure systems face increasing hazards due to climate change that current policies and practices are ill-equipped to handle. Dams and water systems built in the 20th century face new stresses as climate models project temperature increases of 5 degrees Celsius or more and precipitation changes of -5 to -8% for some areas. The disconnect between policymakers and scientists over these challenges has grown into a chasm, leaving infrastructure vulnerable at a time when it is described as increasingly fragile. Adaptation will require rethinking assumptions of human domination over the environment.