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Water-Year Summary for Site 03020000

Click to hide Water-Year Summary instructions and information
  • 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.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  

Water year 2022: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2022
LOCATION - Lat 41°28'40", long 79°26'39" referenced to North American Datum of 1927, Forest County, PA, Hydrologic Unit 05010003, on left bank 100 ft downstream from outlet tunnel at Tionesta Dam, 1.5 mi southeast of Tionesta, and 1.2 mi upstream from mouth.
DRAINAGE AREA - 479 mi².
PERIOD OF RECORD - 1941-91, 2005-2009 (discharge measurements only), 2010 to current year. Prior to October 1970, published as "at Tionesta Creek Dam".
GAGE - Water-stage recorder. Datum of gage is 1,043.43 ft above National Geodetic Vertical Datum of 1929 (U. S. Army Corps of Engineers benchmark). Jul 1, 1954 to Dec 6, 1960, water-stage recorder at present site and at datum 1.5 ft higher. See WSP 1305 or 1725 for history of changes prior to Jul 1, 1954. Satellite telemetry at station.
COOPERATION - Station established and maintained by the U.S. Geological Survey. Funding for the operation of this station is provided by the U.S. Army Corps of Engineers, Pittsburgh District.
REMARKS - Flow completely regulated since 1941 by Tionesta Lake 0.2 mi upstream. Records good except for estimated daily discharges which are poor.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 2007 to current year.
INSTRUMENTATION - Water temperature sensor interfaced with a data collection platform with 60-minute recording interval.

Historically, water temperatures below 0 degrees Celsius were not reported. Water temperature sensors now have the ability to accurately read water temperatures below 0 degrees Celsius.

Cross-sectional water quality data is available upon request. 

Records for water year 2014 water temperature are rated good. For water year 2015, records for water temperature are rated fair. For water year 2016, records for water temperature are rated good. For water year 2017, records for water temperature are rated good.

For water year 2018, records for water temperature are rated good.

Beginning in water year 2019, water temperature records are not rated as "excellent", "good", "fair", or "poor".



EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 28.2°C, Aug 11, 2011; minimum, 0.0°C, many days during winter periods.