Ключевые слова: background, border, change, climate, collect, concept, control, controlling, copy space, dam, depth, downstream, drought, ecology, environment, environmental, flood, galicia, gauge, high, hydrometer, hydrometre, lake, level, level marker, liquid, marker, measure, measurement, metallic, natural, nature, post, rain, rainfall, reservoir, river, scale, shore, sounding line, source, spain, store, structure, sustainability, villarino de conso, water, watersources, waterways,