At Yarmouth a visual estimate of the high water leve[ was obtained from the harbour master's observation. taken with reference to the harbour wall as a height benchmark, as 2.12mODN (1.1m skew surge). The high water levels at Lymington were: 2.05mODN (1.06m skew surge) (CCO gauge); 2.l7mODN (1.18m skew surge) (EA gauge).