USGS Water-Year Summary for Site 03108490

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

Select a water year

Water year 2024: 2024-10-01 to 2025-09-30

Print this page

USGS Water-Year Summary 2024

03108490 OHIO RIVER ABOVE MONTGOMERY DAM AND LOCKS AT OHIOVIEW, PA

LOCATION - Lat 40°38'56", long 80°23'01" referenced to North American Datum of 1927, Beaver County, PA, Hydrologic Unit 05030101, 50 yards upstream from outer-most upper gate on river wall, at river mile 32.

DRAINAGE AREA - 21,714 mi².

REVISIONS HISTORY - Revisions: Prior to March 12, 2024, the datum of gage was reported as 700 ft above National Geodetic Vertical Datum of 1929 in some sources

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 2015 to current year.

GAGE - Water stage recorder with reference staff gage. Datum of gage is 669.74 ft above North American Vertical Datum of 1988 (from benchmark). Prior to March 12, 2024 the datum of gage was reported as 670.20 ft above National Geodetic Vertical Datum of 1929 (NGVD29) or erroneously reported as 700 ft above NGVD29 depending on source. 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: June 2005 to November 2022. pH: June 2005 to November 2022. WATER TEMPERATURE: June 2005 to November 2022. DISSOLVED OXYGEN: June 2005 to October 2022 (seasonal operation, April to October).

COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers, Pittsburgh District.

INSTRUMENTATION - Continuous water-quality monitor interfaced with a data collection platform with 15-minute recording interval. Satellite telemetry at station.

REMARKS -

Data collection for water quality discontinued November 2022.

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

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.

For water year 2014, records for water temperature, specific conductance, pH, and dissolved oxygen are rated good.

For water year 2015, records for water temperature and pH are rated good. Records for specific conductance are rated good, except for April 6 to May 19, which are fair. Records for dissolved oxygen are rated good, except for August 28 to September 9, which are poor.

For water year 2016, records for water temperature and specific conductance are rated good. Records for pH are rated fair. Records for dissolved oxygen are rated fair, except for July 2 to August 5, which are poor.

For water year 2017, records for water temperature are rated good. Records for specific conductance are rated good, except for November 22 to December 15 and August 5-30, which are fair, and December 16 to February 27 and August 31, which are poor. Records for pH are rated good. Records for dissolved oxygen are rated fair.

For water year 2018, records for water temperature are rated good. Records for specific conductance are rated good, except for February 5-7, which are fair, and February 16 to March 2, which are poor. Records for pH are rated good, except for August 27 to September 9, which are fair. Records for dissolved oxygen are rated good, except for August 13 to September 30, which are fair.

For water year 2019, records for water temperature are rated good. Specific conductance records are rated good, except for October 4 - November 7 and August 20 - September 30, which are fair. pH records are good, except for November 7 - April 2, and August 20 - September 30, which are considered fair. Dissolved oxygen records are rated good, except for October 4-31 and August 20 to September 30, which are fair.

Beginning water year 2020, records are no longer given qualitative ratings "excellent", "good", "fair", or "poor".

EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 798 microsiemens/cm, February 3, 2011; minimum, 140 microsiemens/cm, January 20, 2017. pH: 9.7 standard units, January 13, 2018; minimum, 6.9 standard units, on January 24, 2012. WATER TEMPERATURE: Maximum, 30.2°C, July 9, 2012; minimum, -0.3°C, January 4, 5, 6, 2010.