Saturday, July 26, 8 a.m.-5 p.m. Float in a kayak, canoe or raft, and beat the heat in your six-mile journey of discovery down the Chattahoochee River. Bring your own ride, or rent one. Journey takes approximately three hours. Paddlers float from Morgan Falls Dam to Cochran Shoals. Enjoy an afternoon of free music, food and fun at Powers Island festivities. Reservations required; call 678-538-1200. Park at MEAG Power parking lot, 1470 River Edge Parkway, Sandy Springs, 30328. Shuttle buses provided. For more details, visit: www.nps.gov.