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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
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USGS Water-Year Summary 2024
01470960 TULPEHOCKEN CREEK AT BLUE MARSH DAMSITE NEAR READING, PA
LOCATION - Lat 40°22'14", long 76°01'32" referenced to North American Datum of 1927, Berks County, PA, Hydrologic Unit 02040203, on right bank 1.0 mi upstream from Rebers Bridge and Plum Creek, 1.0 mi east of Blue Marsh, 3.0 mi north of Sinking Spring, and 5.5 mi northeast of Reading.
DRAINAGE AREA - 175 mi².
REVISIONS HISTORY - WDR PA-72-1: 1969-71 (M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - May 1965 to current year.
GAGE - Water-stage recorder, crest-stage gage and water-quality monitor. Datum of gage is 229.2 ft above North American Vertical Datum of 1988 (GNSS Survey). Prior to Nov 25, 1974, water-stage recorder at site 0.3 mi downstream at same datum. Prior to February 19, 2025, datum of gage was reported as 230.06 ft above National Geodetic Vertical Datum of 1929. Satellite telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Philadelphia District.
REMARKS - Flow regulated since April 1979 by Blue Marsh Lake (station 01470870) 0.8 mi upstream. Records for water year 2014 are fair except those for estimated daily discharges, which are poor. Records for water year 2015 and 2017 are fair except those estimated discharge, which is poor. Records for water years 2016, 2019, and 2020-2024 are fair. Records for water year 2018 are good.
EXTREMES FOR PERIOD OF RECORD - Maximum Peak Flow and Stage: 6,300 cfs at a GH of 10.79 ft, occurring on September 9, 2011.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Water years 1969 to 2004 and 2018 to current year.
SUSPENDED-SEDIMENT DISCHARGE: May 1973 to May 1976.
INSTRUMENTATION - Temperature recorder since October 1968. Temperature probe interfaced with a data collection platform since 1986 water year.
REMARKS - Temperature records collected at streamgage. Water-quality samples and suspended sediment samples collected at Rebers Bridge 1.0 mi downstream.
EXTREMES FOR PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Maximum, 34.0 deg C, Oct 2, 1968; minimum 0.0 deg C, on several days during December 1970, January and March 1971, and February 1979.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 1,400 mg/L, June 22, 1973; minimum daily mean, 2 mg/L on many days.
SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, 8,570 tons, Jan 27, 1976; minimum daily, 0.45 tons, July 13.
