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Potomac River · NOAA 8594900
Washington, Washington Channel NOAA Tide Station 8594900
Weather, daylight, and tide predictions for the exact NOAA station at 38.8733, -77.0217, plus practical notes for interpreting this reference around Potomac River.
Open the full Outgoing Tide dashboard →Reviewed July 17, 2026
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Station 8594900 conditions snapshot
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NOAA station: Washington, Washington Channel
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Daylight is shown for the station coordinates and time zone.
For the latest available data, refresh your browser. This page loads once and does not poll in the background. Predictions are water levels at the station, not navigation guidance or a guarantee of safe conditions.
About NOAA station 8594900
The Washington station records tidal water levels on Washington Channel near the Potomac and Anacostia river system, marinas, urban waterfronts, and low-lying shorelines.
Why people check this station
It is useful for waterfront access, dock depth, river fishing, paddling, and understanding tidal influence and nuisance-flood potential in the District.
How to interpret the prediction locally
River discharge, rainfall, and downstream wind can add to or subtract from the astronomical tide. The station should be read with current river and weather conditions.
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
- Confirm that station 8594900 represents the water you intend to use.
- Note the predicted high and low times, heights, and overall range.
- Check wind, waves, visibility, precipitation, and official warnings.
- Allow for the local offset between the gauge and your exact location.
- 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.