<p>The sun rises over the dam at Lake Red Rock, Monday, Aug. 26, 2013, near Pella, Iowa.</p>
September 13, 2013
Stories this photo appears in:
September 13, 2013 9 p.m.
Hydroelectric power makes big comeback at U.S. dams
DES MOINES, Iowa - On a typical summer weekend, hundreds of boats glide across the shimmering surface of Iowa's Lake Red Rock, the state's largest body of water.