Water pours over the old Eagle and Phenix Mill dam on the Chattahoochee River as it flows through Columbus, Ga. Wednesday afternoon, March 14, 2012. Uptown Columbus President Richard Bishop said during a news conference the target date for the whitewater rafting course's first dam breach is Wednesday, March 21, from 2 to 4 p.m. The breaching is part of an ongoing construction project to build a whitewater course on the river. (AP Photo/The Ledger-Enquirer, Mike Haskey)