Today's tidal curve.
30 mins at 1.75m, 150 mins up, 30 mins at 3.25m, 150 mins down, 30 mins at 1.75m
This is a symmetrical tide which the pump software has been pre-programmed to perform. It's a very slow tidal run (0.5cm/min or 30cm/hr) compared to the rate at which the pump systems can vary the water levels (at least twice this speed). This way the tide is more realistic in terms of its shape (flood/ebb times relative to slack), groundwater levels in the beach have ample time to respond to the sea levels
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