This is the real reason most of these are removed. No one wants a 100+ year old dam that need several million dollars worth of work and the ROI is negative. S

This is the real reason most of these are removed. No one wants a 100+ year old dam that need several million dollars worth of work and the ROI is negative. So they remove them and everyone is happy. Most of the ones that are removed are well past their use by sticker date.