USGS Water-Year Summary 2022
01473000 PERKIOMEN CREEK AT GRATERFORD, PA
LOCATION - Lat 40°13'46", long 75°27'07" referenced to North American Datum of 1927, Montgomery County, PA, Hydrologic Unit 02040203, on left bank 1,650 ft upstream from highway bridge at Graterford, 0.5 mi upstream from Lodel Creek, and 2.5 mi north of Collegeville.
DRAINAGE AREA - 279 mi².
- WSP 756: Drainage area. WSP 1171: 1935(M). WSP 1302: 1915-16, 1927-29. WSP 1382: 1932-33, 1935, 1937, 1942, 1947, 1948(M), 1949(P), 1950(M), 1951-52(P), WDR PA-91-1: 1989-90 (adjusted mean and monthly runoff values).
PERIOD OF RECORD - June 1914 to current year. Monthly discharge only for some periods, published in WSP 1302. Prior to October 1950, published as "at Graters Ford."
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 112.66 ft above National Geodetic Vertical Datum of 1929. June 1914, to Sept. 6, 1921, non-recording gage at site 1,650 ft downstream at datum 3.29 ft lower. Sept. 7, 1921, to Sept. 13, 1927, non-recording gage at present site and datum. Satellite and landline telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey. Funding for this station is provided by the U.S. Army Corps of Engineers, Philadelphia District, the Pennsylvania Department of Environmental Protection and the U.S. Geological Survey.
PERIOD OF DAILY RECORD - November 2018 to current year
COOPERATION - Funding for the operation of the continuous monitor is provided by the U.S. Geological Survey.
INSTRUMENTATION - Water temperature and specific conductance probe interfaced with a data collection platform
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 1122 microsiemens/cm, Feb 24, 2021; minimum, 72 microsiemens/cm, Aug 04, 2020. WATER TEMPERATURE: Maximum, 32.6 °C, June 30, 2021; minimum, -0.1°C, many days.