Luke Gianni with California American Water walks across the 94-year-old San Clemente Dam in Carmel Valley, California, September 27, 2013. Built on the Carmel River, the 106-foot-tall (32-metre-tall) dam is being torn down in stages over three years. The seismically unsafe dam's removal, estimated at $84 million including wildlife restoration, will enable the reopening of 25 miles of creeks and tributaries in the Carmel River watershed, allowing Central California Coast steelhead trout, listed as a threatened species, to return to native spawning areas. The project is the biggest ever dam removal in California. REUTERS/Michael Fiala (UNITED STATES - Tags: ENVIRONMENT BUSINESS CONSTRUCTION ENERGY)