Ключевые слова: agriculture, building, canal, concrete, control, dam, electric, electricity, energy, engineering, environment, environmental, floodgate, flow, flowing, gate, green, horizontal, hydro, hydroelectric, industrial, nature, opening, outfall, pouring, power, recycling, reservoir, river, runoff, sky, station, sustainability, system, technology, turbine, urban, water, waterfall, weir,