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USGS Water Data Notification Service

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.



We can notify you when changes are made to this system or if there are any significant system events. If you would like to be informed, please subscribe to NWISWEB-Notification. If you are already subscribed and wish to unsubscribe, please use the same form. If your email address has changed, simply unsubscribe with your old email address, and resubscribe with your new email address.

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