From the San Clemente Dam Removal & Carmel River Reroute Project Website: The San Clemente Dam is a 106-foot-high concrete arch dam located approximately 18.5 miles from the Pacific Ocean on the Carmel River in Monterey County. The confluence of the Carmel River and San Clemente Creek is located just upstream of the dam. When the dam was constructed in 1921, it had a reservoir storage capacity of approximately 1,425 acre-feet. Today the reservoir has been filled by more than 2.5 million cubic yards of sediment, leaving a reservoir storage capacity of approximately 70 acre-feet as of 2008. California American Water (CAW) owns and operates the dam. San Clemente Dam currently serves no useful purpose now that water is no longer diverted from upstream of the dam.