Ключевые слова: activity, alternative, architecture, blue, built, cement, concepts, concrete, construction, dam, development, electricity, energy, engineering, fitness, flowing, fuel, generation, grand, hydroelectric, ideas, industrial, industry, lake, landscapes, line, locations, made, natural, nature, nobody, outdoors, overflowing, pattern, perspective, place, power, rapid, reservoir, river, station, stream, structure, summer, supply, surf, technology, water, waterfall,