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Water-Year Summary for Site 03049640

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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.
  • 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)  
00065 Gage height(Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00400 pH(Max.,Min.,Med.)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
03049640 ALLEGHENY RIVER ABOVE LOCK AND DAM NO. 3 AT ACMETONIA, PA
LOCATION - Lat 40°32'10", long 79°48'54" referenced to North American Datum of 1927, Westmoreland County, PA, Hydrologic Unit 05010009, on left bank 15 ft upstream from upper gate on river wall, at river mile 14.5.
DRAINAGE AREA - 11,592 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2015 to current year.
GAGE - Water stage recorder, staff gage and water-quality monitor. Datum of gage is 725.8 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, Pittsburgh District.
REMARKS -  
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: October 2004 to current year. pH: October 2004 to current year. WATER TEMPERATURE: October 2004 to current year. DISSOLVED OXYGEN: October 2004 to current year (data collection suspended during the winter months).

Extremes:

Specific Conductance: Max: 10/04/2010 at 509 (uS/cm). Min 01/14/2017 at 106 (uS/cm) 

pH: Max: 12/17/2005 at 8.5. Min: 02/22/2006 at 6.3.

Dissolved Oxygen: Max: 04/07/2006 at 16.2(mg/L). Min 08/07/2007 at 5.1 (mg/L)

Water Temperature: Max: 08/04/2005 at 30.6 (degC). Min: 02/23/2003 at -0.3 (degC)

COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Pittsburgh District.
INSTRUMENTATION - Automated water-quality monitor interfaced with a data collection platform with 15-minute recording interval. 
REMARKS -

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. 

Values reported by the monitor may not be representative of the entire river width. Cross-sectional water quality data is available upon request.

Data collection for dissolved oxygen is suspended during the winter months. Other interruptions in the record were due to equipment malfunctions.

For water year 2014, records for specific conductance, pH, and water temperature are rated good. Records for dissolved oxygen are rated good, except for October 1-24, which are rated poor.

For water year 2015, records for specific conductance, pH, water temperature, and dissolved oxygen are rated good.

For water year 2016, records for water temperature and dissolved oxygen are rated fair. Records for specific conductance and dissolved oxygen are rated poor.

For water year 2017, records for water temperature and specific conductance are rated good. Records for pH are rated good, except for April 29 to May 31, which are fair. Records for dissolved oxygen are rated good, except for May 3 to August 31, which are poor.

For water year 2018, records for water temperature and specific conductance are rated good, except for April 30 to June 22, which are fair. Records for pH and dissolved oxygen are rated good, except for April 30 to September 30, which are fair.

For water year 2019, records for water temperature and dissolved oxygen are rated good. Records for specific conductance are rated fair. Records for pH are good except for May 21 - June 27 and September 5 - October 7, which are fair. 

Beginning water year 2020, water quality records are no longer rated as "excellent", "good", "fair", or "poor".

EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum, 509 microsiemens/cm, Oct 4, 2010; minimum, 106 microsiemens/cm, Jan. 14, 2018. pH: Maximum, 8.5 standard units, Oct. 31, Dec. 17, 2005; minimum, 6.3 standard units, Feb. 16, 22-24, 2006. WATER TEMPERATURE: Maximum, 30.6°C, Aug. 4, 2006; minimum, -0.3°C, several days during winter periods.