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Water-Year Summary for Site 04192500

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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.
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Available Parameters
00010 Temperature, water(Max.,Mean,Min.)  
00060 Discharge(Mean)  
00608 Ammonia, wf(Mean)  
00625 NH3+orgN, wu(Mean)  
00631 NO3+NO2, wf(Mean)  
00665 Phosphorus, wu(Mean)  
00671 Orthophosphate, wf(Mean)  
62961 Ammonia, dissolved(Mean)  
80154 Suspnd sedmnt conc(Mean)  
80155 Suspnd sedmnt disch(Mean)  
91007 Phosphorus, wu(Mean)  
91057 NH3+orgN, wu(Mean)  
91060 Orthophosphate, diss(Mean)  
91061 NO3+NO2, dissolved(Mean)  

Water year 2022: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2022
04192500 Maumee River near Defiance, OH
LOCATION - Lat 41°17'31", long 84°16'52" referenced to North American Datum of 1927, Defiance County, OH, Hydrologic Unit 04100009, on left bank, 40 ft upstream from Independence Dam, 4 mi downstream from mouth of Auglaize River, and 4.5 mi east of Defiance.
DRAINAGE AREA - 5,545 mi².
REVISIONS HISTORY - WSP 974: 1926-27, 1930. WSP 1387: 1925-28, 1946. WDR OH-70-1: Drainage Area.
PERIOD OF RECORD - October 1924 to December 1935, March 1939 to September 1974, October 1978 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 657.86 ft (NAVD 1988). Prior to Oct 1, 2012 datum of gage was 658.56 ft (NGVD 1929). Prior to Nov. 13, 1924, nonrecording gage at same site and datum.
REMARKS - For the period Oct. 1, 2014 to Aug. 18, 2015, discharge records are rated fair except for periods of estimated record which are poor. For the period Aug. 19, 2015 to Dec. 3, 2015, discharge records are rated good. Dec. 4, 2015 to Dec. 6, 2016: discharge records good except for estimated daily discharges, which are poor. Dec. 7, 2016 to Feb. 27, 2017: discharge records good except for estimated daily discharges, which are poor. Feb. 28, 2017 to Oct. 3, 2017: discharge records fair. Oct. 4, 2017 to Nov. 20, 2018: discharge records fair except for estimated discharges, which are poor. Nov. 20, 2018 to Sept. 30, 2019: discharge records fair except for estimated discharges, which are poor.  Record quality ratings will not be included in the water-year summary for approved records newer than Sept. 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. Daily mean concentration and daily mean load records poor.

Flow affected by regulation of Auglaize River at hydroelectric plant, 9.9 mi upstream. Operation of hydroelectric plant was discontinued Jan. 10, 1963 to Sept. 7, 1985. Low flow slightly regulated by power-plant at Ft. Wayne, Indiana. Slight diversion 275 feet upstream into Miami and Erie Canal through a 24-inch conduit, which bypasses station. Two 36-in. diversion pipes installed at dam in 1998 for low-flow augmentation.

Water-quality and sediment data formerly collected at this site. Water-quality and sediment data are collected at this site beginning again in the 2014 WY.

PERIOD OF RECORD - Water temperature: April 2021 to current.
EXTREMES FOR PERIOD OF RECORD - Water Temperature: Maximum: 31.2 degrees Celsius, Aug. 27, 2021 and Aug. 29, 2021 Minimum: 0.0 degrees Celsius, Jan. 10, 2022.