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, and impacted data products from July 25, 2017 to November 30, 2024. Water level products from December 1, 2024 to present, including real-time data, are correct. We are currently working on correcting the historical water level data and downstream products and aim to have them updated in 2025. We will provide a notification once the historical data products have been updated. Any data products downloaded from this time will need to be re-downloaded. If you have any questions, please send an email to
Tide.Predictions@noaa.gov and we will get back to you as soon as possible.