Hydroelectric power and water supply issues:As the water flows down rivers it is often used to generate our electricity and accounts for less than 20% of our electricity on the grid, in South America is over 80%. Washington State is also about 80% from hydro along the Columbian River with Bonneville Power. If we look at Niagara, Columbia River, Colorado River, Grand Coulee Dam, Tennessee river Valley Authority and Roosevelt Dam. Tesla, the great inventor of hydro-electric power, would be proud o.