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…showed last 75 words of 430 total…of 2 to 10 parts per thousand (ppt), compared with the salinity of salt water, which is about 35 ppt. Where there is a large tidal range but little freshwater inflow mixing is more complete. In coastal lagoons, where there are large open waters, small tidal range, and low freshwater inputs, wind is usually a more important mixing agent than tides. It is truly evident the awesome role estauries play in the transition between salt and fresh water.