USGS Water-Year Summary for Site 03072000

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	Available Parameters
	00010 Temperature, water(Mean,Min.,Max.)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Min.,Mean,Max.)

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

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USGS Water-Year Summary 2024

03072000 DUNKARD CREEK AT SHANNOPIN, PA

LOCATION - Lat 39°45'33", long 79°58'15" referenced to North American Datum of 1927, Greene County, PA, Hydrologic Unit 05020005, on left bank 1,300 ft upstream from highway bridge at mine buildings at Shannopin, 1.2 mi north of Dunkard, 3.5 mi upstream from mouth, and 4 mi southwest of Greensboro.

DRAINAGE AREA - 229 mi².

REVISIONS HISTORY -

WSP 1505: 1955.

Revisions: Prior to January 2, 2024, the datum of gage was reported as 806.25 ft above National Geodetic Vertical Datum of 1929.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1940 to current year. Prior to December 1940 monthly discharge only, published in WSP 1305.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 808.8 ft above North American Vertical Datum of 1988. Prior to January 2, 2023, the datum of gage was erroneously reported as 806.25 ft above National Geodetic Vertical Datum of 1929. 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 - Record for water year is considered good except those for estimated daily discharge, which is poor.

WATER-QUALITY RECORDS

PERIOD OF RECORD - April 2002 to current year.

COOPERATION - 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.

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. All other 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. For water year 2015, continuous records for water temperature are rated good, except for January 22 to March 19 and July 18-19, which are rated fair, and July 20-31, which are rated poor. Records for specific conductance are good, except for October 29 to November 5, January 22 to April 9, and August 16-31, which are rated fair, and for November 6-18 and September 1-22, which are rated poor. Records for pH are rated good, except for January 22 to April 9, which are rated fair. Interruptions in the record were due to ice/flood damage and/or equipment malfunctions. For water year 2016, continuous records for water temperature and specific conductance are rated good. Records for pH are rated good, except for March 5-April 26, which are poor. Interruptions in the record were due to equipment malfunctions.

For water year 2017, records for water temperature, specific conductance, and pH are rated good.

For water year 2018, records for water temperature are rated good. Records for specific conductance are rated good, except for April 9-25, which are fair, and January 25-February 22 and April 26-May 8, which are poor. Records for pH are rated good, except for January 24-March 6, which is poor.

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

EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE--- Maximum instantaneous, 31.3°C on July 7, 2012; Minimum instantaneous, -0.7°C on November 5, 2011. SPECIFIC CONDUCTANCE--- Maximum instantaneous, 3,510 microsiemens per centimeter on September 18, 2016, 78 microsiemens per centimeter February 25, 2018; pH maximum instantaneous, 9.0 units on November 11, 2021, Minimum instantaneous, 6.6 units on August 4, 2015.