USGS Water-Year Summary for Site 03230450

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	Available Parameters
	00060 Discharge(Mean)
	80154 Suspnd sedmnt conc(Mean)
	80155 Suspnd sedmnt disch(Mean)

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

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USGS Water-Year Summary 2024

03230450 HELLBRANCH RUN NEAR HARRISBURG OH

LOCATION - Lat 39°50'52.2", long 83°09'26.4" referenced to North American Datum of 1983, Franklin County, OH, Hydrologic Unit 05060001, on right downstream side of State Route 665 bridge, 2.5 mi upstream from mouth, 2.7 mi north-northwest of Harrisburg and 1.5 mi east of Darbydale.

DRAINAGE AREA - 35.8 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1992 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 811.50 ft (NAVD 1988); previously described as: "Elevation of gage is 813 ft above sea level (from topographic map). Prior to Sept. 2001 at site 1.5 mi downstream at datum of 785 ft."

REMARKS -

Discharge records fair for 2014, except for estimated records, which are poor. Sept. 12, 2014 to Nov. 24, 2014: discharge records fair. Nov. 24, 2014 to Mar. 25, 2015: discharge records fair, except for estimated records, which are poor. Mar. 25, 2015 to May 27, 2015: discharge records good. May 27, 2015 to July 23, 2015: discharge records good, except for estimated records, which are poor. July 23, 2015 to November 9, 2015: discharge records good. November 9, 2015 to November 2, 2016: discharge records good, except for estimated records, which are poor. Nov. 3, 2016 to Mar. 20, 2017: discharge records good except for periods of estimated discharge, which are poor. Mar. 21, 2017 to Nov. 19, 2017: discharge records good. Nov. 20, 2017 to Dec. 26, 2017: discharge records fair. Dec. 27, 2017 to Jun. 5, 2018, 2018: discharge records poor. Jun. 6, 2018 to Oct. 17, 2018: discharge records fair except for periods of estimated discharge, which are poor. Water-quality data collected at this site.

Record quality ratings will not be included in the water-year summary for approved records newer than 09/30/2019. 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 - May 1992 to current year.

PERIOD OF DAILY RECORD - SUSPENDED-SEDIMENT DISCHARGE: October 1992 to current year.

INSTRUMENTATION - Refrigerated water-quality pumping sampler since October 1992.

REMARKS - Water-quality and suspended-sediment samples were collected by equal-width-increment (EWI) sampling method, approximately once per month. Suspended-sediment samples and seasonal-event water-quality samples were collected by pumping sampler. Pumped samples were collected for every 0.5-ft change in stage, and on every fifth day if the stage did not change 0.5 ft during the preceding five-day period. Sediment samples were also collected at a single vertical, approximately biweekly. Suspended-sediment loads were calculated using the mean-interval method (Porterfield, George, 1972, Computation of Fluvial-Sediment Discharge: U.S. Geological Survey, Techniques of Water-Resources Investigations, book 3, chap. C3, 66 p.). For days with unsteady concentration, discharge, or both, the day was subdivided into quarter-hour intervals and the daily load was calculated by summing the loads for these quarter-hour intervals. This required interpolation between measured and estimated concentrations.

EXTREMES FOR PERIOD OF DAILY RECORD - SEDIMENT CONCENTRATIONS: Maximum daily mean, 819 mg/L, June 29, 1998, minimum daily mean, 0.0 mg/L, on many days during 2009 - 2012, October 2014, on several days during 2004 and 2008, December 18 - 22, 2005, and August 14 and 15, 2007. SEDIMENT LOADS: Maximum daily, 4,420 tons, June 29, 1998, minimum daily, 0.00 ton, on many days during 1993 - 1995, 1998, 1999, 2002, 2007 - 2013, on several days during 1996, 1997, 2000, and 2004 - 2006, September 27 - 30, 2014, October and November 2014.

EXTREMES FOR CURRENT YEAR - SEDIMENT CONCENTRATIONS: Maximum daily mean, 372 mg/L, Mar. 21, minimum daily mean, 2 mg/L, Sept. 9-14. SEDIMENT LOADS: Maximum daily, 334 tons, May 22, minimum daily, 0.01 ton, September 11-12, 28-30.