U.S. takes unprecedented steps to replenish Colorado River's Lake Powell
> One acre-foot, about 326,000 gallons (1.23 million liters), is enough water to supply one or two households for a year.This is mind-blowing. Is this true? Each house in American (roughly) uses this much water? I assume it's certainly not an issue in, say, Ohio where my monthly water bill I think has never exceeded $25 - but there's just no way this is sustainable in places out west prone to drought, right?Am I over-appreciating this seemingly large number?> "We are never going to see these reservoirs filled again in our lifetime," said Denielle Perry, a professor at Northern Arizona University's School of Earth and Sustainability.