Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our Next Generation Station Page here.
Click to hideNews Bulletins

Water-Year Summary for Site 03012550

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 2021: 2020-10-01 to 2021-09-30

Print this page
USGS Water-Year Summary 2021
LOCATION - Lat 41°50'29", long 79°00'44" referenced to North American Datum of 1927, Warren County, PA, Hydrologic Unit 05010001, in Allegheny National Forest, on left bank 0.5 mi downstream from Kinzua Dam, 2.5 mi east of Hemlock, and at river mile 197.6.
DRAINAGE AREA - 2,180 mi².
REVISIONS HISTORY - WSP 1275: 1936-37. WDR PA-73-1: Drainage area.
PERIOD OF RECORD - 1936-91, 2005-2009 (discharge measurements only), 2010 to current year. Published as "near Kinzua" (station 03012500) prior to October 1968, and as "at Warren" (station 03012600) October 1968 to September 1972.
GAGE - Water-stage recorder. Datum of gage is 1,192.55 ft above National Geodetic Vertical Datum of 1929 (U.S. Army Corps of Engineers bench mark). Prior to November 1, 1964, water-stage recorder at site 1.0 mile upstream at different datum. November 1, 1964 to August 4, 1966, non-recording gage, and August 5, 1966 to September 30, 1972, water-stage recorder at site 6.4 miles downstream at different datum. 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 regulated since October 1965 by Allegheny Reservoir (station 03012520), 0.5 mile upstream. Gage height associated with maximum peak flow of 25,000 cfs is 14.12 ft, from site and datum then in use. Records are good except for those estimated 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.

Water year 2014 water temperature records rated poor. Water year 2015 water temperature records rated fair. Water year 2016 records are rated fair. Water year 2017 records are rated fair.

Water year 2018 temperature records are rated fair. 

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, 24.7°C, July 18, 19, 2012; minimum, 0.6°C, Jan 13, 28, 2009 and Feb 24, 2015.