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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
402452078271301 BA 74
Valley and Ridge aquifers
Brallier Formation
Brallier Formation
LOCATION - Lat 40°24'52.2", long 78°27'12.2" referenced to North American Datum of 1983, Blair County, PA, Hydrologic Unit 02050302, at Allegheny Portage Railroad National Historic Site, and southwest of Duncansville.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 150 ft. Upper casing diameter 6 in; top of first opening 14 ft, bottom of last opening 150 ft. Drilled observation well, cased to 14 ft, open hole.
DATUM - Land-surface datum is 1,134 ft above North American Vertical Datum of 1988. Measuring point: top of casing, 1.8 ft above land-surface datum, Jun. 25, 1969 to Jun. 10, 1999; top of recorder shelf, 3.06 ft above land-surface datum, Jun. 10, 1999 to Jun. 2, 2011; top of recorder shelf, 3.2 ft above land-surface datum, Jun. 1, 2011 to Feb. 25, 2016; recorder shelf, 3.26 ft above land-surface datum, Feb. 25, 2016 to present. Elevation of land surface is from Lidar.
PERIOD OF RECORD - August 1969 to current year.
GAGE - Data collection platform with 15-minute recording interval since April 2023; prior, 60-minute recording interval. Satellite telemetry at station.
COOPERATION - Site maintained in cooperation with the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey.
REMARKS - Daily maximum water levels are available for this well for the period of record. For some years, daily minimum and daily mean water levels may also be available from the USGS Pennsylvania Water Science Center Office.
EXTREMES FOR PERIOD OF RECORD - Prior to October 2000, the extremes shown were based on extremes of the daily maximum depth below land-surface datum. Since that date, the extremes are based on the instantaneous depth below land-surface datum. Highest water level, 8.45 ft below land-surface datum, May 13, 2019; lowest, 18.65 ft below land-surface datum, Oct 29, 30, 1969.
