Ключевые слова: area, autumn, change, civil, cloudy, colors, conservation, current, ecology, ecosystem, efficiency, energy, engineering, environment, environmental, facility, flow, flowing, generation, hydro, hydrodynamics, hydroelectric, industrial, infrastructure, installation, landscape, machinery, maintenance, management, natural, nature, plans, power, renewable, resources, river, riverbank, rural, scenic, seasonal, setting, site, sustainable, system, technology, treatment, trees, turbine, view, water, wetlands,