Colorado has so many deficient dams restricted from holding water that, if owners were to fix them, the state would gain four Chatfield Reservoirs worth of coveted water-storage capacity.
A review of state dam safety records also shows that a breach at any of 21 “high hazard” dams today likely would kill people living or working nearby. Failures at another 33 deficient “significant hazard” dams would cause major property damage.