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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.
Incorrectly formatted USGS site number:
To locate one or more sites using site numbers you must use the USGS station numbers, which are a number from 8 to 15 digits long.
Use 'search_site_no' to locate stations using partial station numbers