Oroville Dam, CA (Major Coord: 39-121)
Impounds Feather River to create Lake Oroville (3.5 Million Acre Feet or about 3.5 Lake Norman's)
Earthfill (Tallest Earthen Dam, Tallest Dam, in USA)
770 Feet Tall (Yes they built an Earthen Dam 770 ft. tall; Joccassee Dam, SC is Earthen and 440 Ft.)
The destruction of this dam will flood and kill hundreds of thousands of people in just a few hours. It will flood and kill nearly all of Oroville, CA in less than 30 minutes. It will continue on down to Sacramento and be on of the 3 huge reservoirs that is unleased upon Sacramento, CA. Note highway's 162 and 70.
https://en.wikipedia.org/wiki/Oroville_Dam_crisis
https://www.foxnews.com/us/california-dam-spillway-in-danger-of-collapsing
https://www.foxnews.com/us/if-oroville-dam-failed-residents-likely-would-not-be-advised-in-time