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Water-Year Summary for Site 04197170

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30

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USGS Water-Year Summary 2020
04197170 Rock Creek at Tiffin OH
LOCATION - Lat 41°06'49", long 83°10'06" referenced to North American Datum of 1927, Seneca County, OH, Hydrologic Unit 04100011, on left bank about 160 ft downstream from bridge on Rebecca Street, at Heidelberg College.
DRAINAGE AREA - 34.6 mi².
PERIOD OF RECORD - June 1983 to current year.
GAGE - Water-stage recorder. Datum of gage is 727.17 ft (NAVD 1988). Prior to October 1, 2010, datum was 740 ft (NGVD 1929), derived from topo map.

Records fair for water year 2014. Periods of estimated record are poor. Oct. 1, 2014 to Nov. 18, 2015: records fair. Periods of estimated record are poor. Nov. 18, 2015 to Dec. 7, 2016: discharge records fair except for estimated records, which are poor.  Dec. 7, 2016 to Mar. 24, 2017: discharge records rated poor.  Mar. 24, 2017 to Aug. 31, 2017: discharge records rated good, except for estimated periods, which are poor.  Aug. 31, 2017 to Oct. 24, 2017: discharge records rated fair. Oct. 25, 2017 to Oct. 18, 2018: discharge records rated good, except for estimated periods, 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.