Galveston, Pier 21 NOAA Tide Station 8771450

About NOAA station 8771450

The Galveston station measures water levels near Pier 21 in Galveston Channel, serving the harbor, bay, jetties, piers, passes, and Gulf approaches.

Why people check this station

Anglers use it to plan bay and channel stages, dock and ramp depth, shoreline access, jetty trips, and the effect of incoming or outgoing water near structure.

How to interpret the prediction locally

Persistent wind can raise or lower Galveston Bay beyond the astronomical prediction. Jetties, passes, and shallow bays each need local wind and current context.

Tide height is not current speed

A high or low prediction describes the expected water level at the gauge. Current can turn earlier or later in a nearby inlet, river, bridge opening, pass, or channel. NOAA publishes separate current predictions for supported locations, and local weather can move the observed level above or below the astronomical prediction.

Basic station-planning checklist

1. Confirm that station 8771450 represents the water you intend to use.
2. Note the predicted high and low times, heights, and overall range.
3. Check wind, waves, visibility, precipitation, and official warnings.
4. Allow for the local offset between the gauge and your exact location.
5. Verify actual water, access, navigation, and regulations before departure.

Planning only: Data can be delayed, unavailable, or unrepresentative of a nearby micro-location. Never use this page as a substitute for official charts, notices, warnings, or direct observation.

Official references

• NOAA CO-OPS station 8771450
• NOAA tide predictions for Galveston, Pier 21
• NOAA tide and current FAQs
• National Weather Service marine forecasts