TNAG-1174-FCO40-1476-Proposed-replacement-airport-for-Hong-Kong-at-Deep-Bay-or-Ch-1982 — Page 113

CONFIDENTIAL

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5. TIDAL CONSIDERATONS

According to tide tables (Ref. 4), the mean high high water level at

Tsim Bei Tsui is 0.6 m higher than that at the Hong Kong Harbour (measured at

North Point) while the mean low low water is 0.2 m higher at Tsim Bei Tsui than

at North Point. It is understood that the differences mentioned above are based

on fairly scanty data.

A tide gauge was installed by the Port Works Division at Tsim Bei Tsui

in April 1974. The highest water level recorded so far was 3.55 metres (hourly

reading) which occurred on 13 October 1974 when Typhoon Bess was about 190

nautical miles south of Hong Kong.

CONFIDENTIAL