04/28/2023
Parker Dam is the deepest dam in the world; 73 percent of its structural height of 320 feet is below the original riverbed. Men and machines excavated 235 feet into the Colorado riverbed before concrete was placed for the dam's foundation. About 85 feet of the dam are visible. However, the dam's superstructure rises another 62 feet above the roadway across the top of the dam. https://www.usbr.gov/lc/hooverdam/parkerdam.html #:~:text=The%20Dam%20and%20Powerplant,is%20below%20the%20original%20riverbed.