Here is a link to an item from CityLab on Jan. 17, 2018, noting that disaster mitigation offers $6 in savings for every $1 spent.

https://www.citylab.com/environment/2018/01/disaster-resilience-saves-six-times-as-much-as-it-costs/550712/?utm_source=nl__link3_011818&silverid=MzgxMjk5MTA1NzU3S0&utm_source=citylab-daily&silverid=MzgxMjk5MTA1NzU3S0