Flushing characteristics of Amba river estuary, west coast of India
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Tide dominated Amba River Estuary was studied to evaluate its flushing characteristics. Although, spring tidal range of 3.4 m was observed at 40 km inland, the seawater component here at high tide was less than 1%. The wet weather flushing time of 22 tidal cycles for neap, 6 to 7 tidal cycles for spring and dry weather flushing time of 45 tidal cycles for neap, 6 to 7 tidal cycles for spring based on modified tidal prism method indicated that the load retained in the estuary after infinite number of tidal cycles was 17 times and 33 times for neap during wet and dry weather conditions and 2 times the load introduced per tidal cycle for spring during both the weather conditions. The flushing times calculatEd. by the classical tidal prism method were shorter than those obtainEd. by the modified tidal prism method.
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