Tidal Current Predictions 2004

This system will allow you to calculate tidal current predictions for the more than 2700 tidal current stations predicted by CO-OPS. The publication of full daily predictions is necessarily limited to a comparatively small number of stations. These stations are refered to as "reference stations". The remaining stations are refered to as "subordinate stations". Tidal current predictions at the subordinate stations can be obtained by applying specific differences to the time and speed of maximum and minimum currents at a specified reference station.

These pages provide a listing of the more than 2700 subordinate stations for which predictions can be made, the differences for each, and a link to the appropriate reference station. The list of subordinate stations has been broken down into states and other areas for which there are tide stations. Each state is further broken into regions for your selection. Each region will present a list of the tidal current stations in the area. These stations have been listed geographically; thus stations which are near each other will be near each other in the listing. This will make finding the location you are interested in, or a nearby station, simpler.

Unlike tide stations, which are normally located along the shoreline, most tidal current stations are located offshore in the channels, rivers, and bays. Tidal current stations are often named for the channel, river, or bay in which they are located or for a near by navigational reference point. A map or some personal knowledge of the area may be necessary to help in identifying stations in the area you are interrested in.

Instructions on how to apply the time and height differences can be found by "clicking" on one of the found in multiple places within the listing of subordinate stations.

Depth of stations: Although current measurements may have been recorded at various depths in the past, the data listed for many subordinate stations are mean values determined to have been representative of the current at each location. For that reason, no specific current meter depths for those stations are listed. Beginning with the Boston Harbor tidal current survey in 1971, data for individual meter depths were published and subsequent data will be presented in a similar manner. Most historic tidal current data is collected from meters suspended from survey vessels or anchored buoys, the listed depths for these stations are those measured downward from the surface. More recent tidal current data are collected from meters anchored at fixed depths from the bottom, the listed depths for these stations are defined as depth below chart datum and will be accompanied by the small letter "d". All depths listed are in units of feet.

For you convenience, the predicted times are given with Daylight Saving Time incorporated from April to October when appropriate. Speeds are provided in knots.

Click here for the one year reference station current predictions page.