Tide Tables

Published predictions of tidal times and heights for stated locations, dates and reference datums.

Tables commonly list high and low water for standard ports and provide corrections or direct predictions for secondary locations. They may also include tidal curves, coefficients, time-zone information and explanatory notes, but tidal streams are often published separately.

The correct year, port, time zone, daylight-saving convention and chart datum must be checked. Wind, pressure, river flow and local effects can alter actual water level, so tables are predictions rather than measured guarantees and require an appropriate safety margin.