The "'Port of Saint John "'is a port complex that occupies of land along of waterfront of the Saint John Harbour at the mouth of the semi-diurnal tides and the river influence, slack water occurs at approximately half tide and not at high or low water as at most other ports.
22.
At the Chesapeake Bay Bridge Tunnel ( CBBT ) site, which lies at the southernmost point of the Bay where it meets the Atlantic Ocean near Norfolk, Virginia and the capes of Henry, there is a distinct semi-diurnal tide throughout the lunar month, with small amplitude modulations during spring ( new / full moon ) vs . neap ( one / three quarter moon ) tidal periods.
23.
The estuary is a highly dynamic environment, ranging from the high outflows of freshwater during the spring freshet, to the low outflow and rising saltwater content during the summer period, to fall ocean storms and nor'easters which reshape the barrier islands and the old river channel which forms the navigation channel for ocean-going ships heading to ports at diurnal tide cycle ranges only 1 m on average.
