Ключевые слова: background, balance, bank, bath, beautiful, blue, calder, calm, cascade, chrystal, clean, clear, clouds, columbia, conserve, construction, cool, copy, current, dam, deep, detail, ditch, down, drop, drowned, ecology, electrical, embankment, energy, fall, flow, kent, lasher, lock, overflow, rationing, river, saving, sky, smooth, space, spike, storage, stream, streaming, structure, water, weir, white,