Ключевые слова: above, alone, background, black, change, climate, dam, damage, depth, disaster, drought, eco, ecology, environment, flood, gauge, green, high, hurricane, indicator, level, lined, lines, low, mark, marker, measure, measurement, monitor, natural, outdoors, outside, pillar, pole, pollution, pond, reservoir, river, rule, ruler, scale, sign, summer, swim, vertical, water, weather, wind, wood, yellow,