aerial view of a dam with high walls surrounded by lush green hills and a serene lake

aerial agriculture architecture blue bright civil cloudy coastline communities construction control dam development eco energy engineering environment environmental flanked flood floodgate flowing friendly generation generator green greenery high hills hydro hydroelectric hydrology industrial industry infrastructure lake land landscape large lush management mountains natural nature outdoor outdoors overflow planning power public reflection regional reservoir resources river rolling scenic science serene skies sky stretches structure surrounded sustainability technology tourism tranquil tranquility travel urban use vast view walls water works