Perth Harbour Tidal Information |
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HSWT is 4.6 metres. Depth at low water varies according to the height of the water in the river, but the harbour never dries out. The harbour has a NAABSA (Not Always Afloat but Safe Aground) classification. Heights of Spring and Neap tides can vary with barometric pressure and wind direction. After periods of heavy rain or melting snow, a spate is experienced and this can considerably increase the height of the river and the strength of current. Under normal conditions the tidal current rate is typically: Half Flood: Spring 3 knots, Neap 1.5 knots
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