NOTICE: CO-OPS recently determined that water level data from Turkey Point, Hudson River NERRS, NY (8518962) contained an error due to the conversion of pressure to water level in our database. This error resulted in water level measurements several centimeters higher than actual. Impacted water level products from July 25, 2017 to November 30, 2024 have now been corrected, including 6-minute water level data, hourly heights, highs/lows, monthly means, and tidal datums. Any data products downloaded from this timeframe will need to be re-downloaded. Water level products from December 1, 2024 to present, including real-time data, were not impacted. If you have any questions, please send an email to
tide.predictions.gov and we will get back to you as soon as possible.