USGS Water-Year Summary for Site 03136500

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	Available Parameters
	00060 Discharge(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

03136500 KOKOSING RIVER AT MOUNT VERNON, OH

LOCATION - Lat 40°24'20", long 82°30'00" referenced to North American Datum of 1927, Knox County, OH, Hydrologic Unit 05040003, on right bank 300 ft downstream from Tilden Avenue bridge, 0.8 mi downstream from North Branch, and 2.7 mi upstream from Dry Creek.

DRAINAGE AREA - 202 mi².

REVISIONS HISTORY - WSP 2107: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - February 1953 to current year.

GAGE - Water-stage recorder. Datum of gage is 980.64 ft (NAVD 1988) (levels by U.S. Army Corps of Engineers). Prior to May 21, 1991, gage at same site and at datum of 984.16 ft NGVD 1929. May 21, 1991 to September 30, 2010 gage at same site and at datum of 981.16 ft NGVD 1929 (levels by U.S. Army Corps of Engineers).

REMARKS -

Records fair for 2014, except for estimated periods, which are poor. For the period Oct. 1, 2014 to Jan. 7, 2015, records rated good. For the period Jan. 8, 2015 to Mar. 22, 2015 record is rated fair except for estimated daily discharges which are poor. For the period Mar. 23, 2015 to Jul. 26, 2015 record is rated good except for estimated daily discharges which are poor. For the period Jul. 27, 2015 to Sept. 21, 2015, record is rated fair. For the period Sept. 22, 2015 to Nov. 9, 2015 record is rated good. For the period November 10, 2015 thru Dec. 12, 2016, record is rated fair except for estimated daily discharges which are poor. For the period Dec. 13, 2016 to Apr. 19, 2017, discharge records rated good except for estimated discharges which are poor. For the period Apr. 20, 2017 to May 14, 2017, discharge records rated fair. For the period May 15, 2017 to Oct. 17, 2017, discharge records rated poor. For the period Oct. 18, 2017 to Oct. 14, 2018, discharge records rated fair except for estimated discharges 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.

Some regulation by Knox Lake, capacity, 3,750 acre-ft, 8.2 mi upstream on East Branch of North Branch Kokosing River beginning in 1954 and North Branch Kokosing River Lake, 14,886 acre-ft, 10 mi upstream on North Branch Kokosing River, begins in June 1972. Water-quality data formerly collected at this site. U.S. Army Corps of Engineers satellite telemeter at station.