USGS Water-Year Summary for Site 03106000

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)

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

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USGS Water-Year Summary 2024

03106000 CONNOQUENESSING CREEK NEAR ZELIENOPLE, PA

LOCATION - Lat 40°49'01", long 80°14'33" referenced to North American Datum of 1927, Beaver County, PA, Hydrologic Unit 05030105, on right bank at downstream side of highway bridge at Hazen, 0.3 mi upstream from Brush Creek, 4 mi southeast of Ellwood City, and 6.0 mi west of Zelienople.

DRAINAGE AREA - 356 mi².

REVISIONS HISTORY -

WSP 743: Drainage area. WSP 893: 1937-38, 1939 (M). WSP 1305: 1922-26, 1928. WSP 1335: 1920-21, 1924 (M). WSP 1385: 1952.

Revisions: Peak discharge for the 2003 water year was revised on September 29, 2022 due to an ice affected peak being reported previously

Revisions: The datum of gage was erroneously reported as 850 ft above National Geodetic Vertical Datum of 1929 prior to January 18, 2024.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1919 to current year. Monthly discharge only for some periods, published in WSP 1305. June 1915 to September 1919 (gage heights and discharge measurements only) in reports of Water Supply Commission of Pennsylvania. Published as "at Hazen" 1915-16, 1929-63, and as "near Hazen" 1917-28.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 851.8 ft above North American Vertical Datum of 1988. Prior to June 23, 1941, nonrecording gage at same site and datum. Prior to January 18, 2024, depending on source, the datum of gage was reported as 852.31 ft above National Geodetic Vertical Datum of 1929 (NGVD29) or erroneously reported as 850 ft above NGVD29. 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, the Pennsylvania Department of Environmental Protection, and the U.S. Geological Survey.

REMARKS - Some regulation by mills upstream of station. Records good except those for estimated daily discharges, which are poor.

WATER-QUALITY RECORDS

PERIOD OF RECORD - April 2002 to current year.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: November 2010 to current year. pH: April 2011 to current year (seasonal, May to October). WATER TEMPERATURE: November 2010 to current year. DISSOLVED OXYGEN: April 2011 to current year (seasonal, May to October).

COOPERATION - Station established and maintained by the U.S. Geological Survey in cooperation with the Pennsylvania Department of Environmental Protection. Water-quality samples were collected as part of the Pennsylvania Department of Environmental Protection Water-Quality Network (WQN) with cooperation from the Pennsylvania Department of Environmental Protection.

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

REMARKS -

As of October 2013, results from discrete water quality samples collected at this site are available through the U.S. Geological Survey National Water Information System web interface on the "Water Quality for the Nation" webpage. Analyses for pH, water temperature, specific conductance, and dissolved oxygen were performed on site. Sample analyses were performed at the Pennsylvania Department of Environmental Protection laboratory in Harrisburg, PA. Occasionally, values for filtered parameters may exceed values for the corresponding unfiltered parameter. These results are within the limits of analytical precision and methods.

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 stream width. Cross-sectional water quality data is available upon request.

Data collection for dissolved oxygen is discontinued from November through April. Other interruptions in the record are due to excessive fouling or equipment malfunctions. Values recorded from water quality sonde may not be indicative of entire stream width.

For water year 2014, water temperature and pH records are rated good. Specific conductance records are rated good, except for December 27 to January 6 and April 25 to May 16, which are rated fair, and January 7 to February 8 and May 17 to May 30, which are rated poor. Dissolved oxygen records are rated good, except for September 27 to 30, which are rated fair.

For water year 2015, records for water temperature are rated good. Records for specific conductance are rated good, except for November 8 to April 7, May 19-20, July 19-31, which are rated fair, and for August 1-7, which are rated poor. Records for pH are rated good, except for July 23 to August 7, which are rated fair, and for August 19-21, which are rated poor. Records for dissolved oxygen are rated good, except for May 8-20, which are rated fair, and July 21-31, which are rated poor.

For water year 2016, records for water temperature, specific conductance, and dissolved oxygen are rated good. Records for pH are rated good, except for August 4-11, which are fair, and for May 4 to June 7, which are poor.

For water year 2017, records for water temperature, specific conductance, and pH are rated good. Records for dissolved oxygen are rated good, except for September 7-29, which are fair.

For water year 2018, records for water temperature and dissolved oxygen are rated good. Records for specific conductance are rated good, except for December 4-12, January 30 to March 6, April 27 to May 6, June 6-22, July 11 to August 9, and September 10-21, which are fair, and January 12-29, May 7-8, and September 22-30, which are poor. Records for pH are good, except for August 9-16, which are fair.

For water year 2019, records for water temperature are rated good. Records for specific conductance are rated good, except for February 5 to June 20, which are fair, and November 20 to February 4, which are poor. Records for pH are rated good, except for June 20 to September 30, which are air. Records for DO are rated fair.

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

EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum, 1,920 microsiemens/cm, Feb 17, 2021; minimum, 156 microsiemens/cm, May 19, 2011. WATER TEMPERATURE: Maximum, 33.6°C, Jul 22, 2011; minimum, -0.3°C on many days during winter periods.