Ключевые слова: algae, background, blue, cascade, clean, cool, curve, dam, dike, drop, ecology, element, environment, fall, flood, flow, foam, gate, hydro, lake, landscape, liquid, motion, nature, outdoors, overflow, pattern, plunge, pour, pure, rapid, reservoir, river, riverside, sewage, speed, splash, spray, steep, stream, supply, technology, texture, view, wall, water, waterfall, weir, wet, white,