Ключевые слова: arch, archgravity dam, architecture, arizona, boulder, building, canyon, colorado, colorado river, concrete, dam, drain, electric, electricity, energy, engineering, environment, historic, hoover, hoover dam, horizontal, hydro, hydro power plant, hydroelectric, hydroelectric power, industry, lake, lake mead, landmark, mead, meade, nevada, nevada intake tower, penstock, penstock towers, plant, power, power plant, renewable, renewable energy, reservoir, river, steel, structure, technology, tower, towers, usa, water,