While the U.S. has seen a slight decline in total energy production from hydro resources over the last two decades, the industry is gearing up to reverse that trend and ride the wave of growth seen throughout the other renewable energy industries.

"There's growing interest in trying to find ways to bring more hydropower online responsibly," she says. "It's a good -- and sometimes complicated -- time for the industry." -- Linda Church Ciocci, Executive Director of the National Hydropower Association