With the National Hydropower Association declaring August 24, 2023, as National Hydropower Day, the Kansas City District wants to celebrate our hydropower plants at Harry S. Truman Lake and Stockton Lake in central Missouri. The NHA theme for this year: hydropower is the key. What does that mean? Well, hydropower is key to cleaner communities. Hydropower production does not add to greenhouse gasses that contribute to higher temperatures on earth. Water runs through turbines in the dam and produces energy by turning the turbines with assistance from gravity.