USGS Water-Year Summary for Site 03220510

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

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

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USGS Water-Year Summary 2024

03220510 SCIOTO RIVER AT O'SHAUGHNESSY DAM OH

LOCATION - Lat 40°09'11", long 83°07'35" referenced to North American Datum of 1927, Delaware County, OH, Hydrologic Unit 05060001, 424 ft downstream from dam.

DRAINAGE AREA - 979 mi².

SURFACE-WATER RECORDS

REMARKS -

Interruptions in the water-quality records are due to equipment malfunctions. Oct. 1, 2013 to Oct. 15, 2018: Specific conductance records good except Nov. 13, 2013 to Dec. 17, 2013, Dec. 21, 2015 to Apr. 28, 2016, and Jan. 13, 2017 to Mar. 23, 2017, which are fair and May 11-12, 2017, July 15-17, and Dec. 8, 2017 to Jan. 30, 2018, which are poor. pH records good except Aug. 21-29, 2014, Jan. 10-28, 2016, Apr. 3-15, 2016, May 9-26, 2017, June 15, 2017 to July 11, 2017, Aug. 2-22, 2017, Nov. 28, 2017 to Dec. 8, 2017, May 25, 2018 to July 6, 2018, Aug. 2-17, 2018, and Sep. 26-27, 2018, which are fair and Nov. 6-28, 2017, Jan. 12-30, 2018, Feb. 16, 2018 to Mar. 1, 2018, which are poor. Water temperature records good except Aug. 1, 2014 to Nov. 26, 2014, which are fair and Apr. 29, 2017 to May 9, 2017, which are poor. Dissolved oxygen records good except Oct. 1, 2013 to May 1, 2014 and Oct. 11, 2014 to Nov. 7, 2014, Apr. 22-25, 2016, Apr. 30, 2016 to May 18, 2016, Sept. 7, 2016 to Nov. 30, 2016, Apr. 23-26, 2017, July 6, 2018 to Sept. 25, 2018 and Sept. 28, 2018 to Oct. 15, 2018, which are fair and May 2, 2014 to Oct. 10, 2014, and June 14, 2015 to Dec. 21, 2015, Apr. 26-29, 2016, May 19, 2016 to Sept. 6, 2016, Dec. 1, 2016 to Jan. 12, 2017, Apr. 26, 2017 to May 26, 2017, July 11, 2017 to Aug. 22, 2017, Jan. 12-30, 2018, May 4, 2018 to June 14 2018, and Sept. 26-27, 2018, which are poor.

Record quality ratings may not be included in the water-year summary for approved records newer than 09/30/2018. Record quality is still being rated internally. For questions about record quality ratings, please send email to gs-w-oh_NWISWeb_Data_Inquiries@usgs.gov.

WATER-QUALITY RECORDS

PERIOD OF RECORD - June 1998 to current year.

PERIOD OF DAILY RECORD - Water temperature, specific conductance, dissolved oxygen, and pH: June 1998 to current year.

INSTRUMENTATION - A YSI 6920V2-01 water-quality monitor is connected to a Design Analysis H-522+ electronic data logger set for 1-hour logging/transmitting interval.

EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum, 1,830 microsiemens, Feb. 20, 2014; minimum, 128 microsiemens, Feb. 26, 2018. pH: Maximum, 9.2 units, Aug. 27, 2009, Sept. 3, 2009, and Sept. 15, 2009, July 24, 2011, July 29, 2011 to July 31, 2011, and Aug. 1, 2011, May 21, 2012, and July 3, 2018; minimum, 5.8 units, Mar. 28, 2002. WATER TEMPERATURE: Maximum, 32.0 °C, July 31, 2011; minimum, 0.0 °C, Jan. 30, 2019. DISSOLVED OXYGEN: Maximum, 18.0 mg/L, Apr. 19, 2010; minimum, 0.1 mg/L, Aug. 15, 2007, Sept. 24, 2010, and Sept. 1, 2012 to Sept. 2, 2012.