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Water-Year Summary for Site 04183500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Min.,Max.,Mean)  
00400 pH(Max.,Med.,Min.)  
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)  
63680 Turbidity, Form Neph(Max.,Min.,Mean)  
80154 Suspnd sedmnt conc(Mean)  
80155 Suspnd sedmnt disch(Mean) [(2)]  
91007 Phosphorus, wu(Mean)  
91057 NH3+orgN, wu(Mean)  
91060 Orthophosphate, diss(Mean)  
91061 NO3+NO2, dissolved(Mean)  

Water year 2024: 2024-10-01 to 2025-09-30
 
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USGS Water-Year Summary 2024
04183500 Maumee River at Antwerp OH
LOCATION - Lat 41°11'56", long 84°44'40" referenced to North American Datum of 1927, Paulding County, OH, Hydrologic Unit 04100005, The gage is located on the left bank, 425 ft downstream (East)from State Rt 49 on county Rd 192. 1.2 mi North of Antwerp, Ohio and 7 mi downstream from Indiana State Line. Antwerp is roughly 23 miles SW of Defiance on State route 24. The gage is below a group of farm buildings.
DRAINAGE AREA - 2,129 mi².
REVISIONS HISTORY - WSP 1174: 1927, 1933, 1940. WSP 1387: 1922-23, 1925-27, 1934. WDR OH-70-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 1921 to December 1935, April 1939 to September 1981. March 2014 to present.
GAGE - Water-stage recorder. Datum of gage is 689.80 ft (NAVD 1988). Prior to March 2014 datum was published as 694.90 (NGVD 1929). Prior to Sept. 13, 1925, non recording gage at site 400 ft upstream at (NGVD 1929).
REMARKS - Municipal and industrial uses upstream. Low flow slightly regulated by power plant at Fort Wayne, Indiana, 32 mi upstream. Flow slightly regulated by upstream reservoirs. 
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Mar. 27, 1913, estimated as 40,000 ft³/s. Flood of March 17,1982, 26,100 ft³/s, gage height, 21.70 ft.
WATER-QUALITY RECORDS
PERIOD OF RECORD - WATER TEMPERATURE: Feb. 2018 to current year.  SPECIFIC CONDUCTANCE: Feb. 2018 to current year.  pH: Feb. 2018 to current year.  DISSOLVED OXYGEN: Feb. 2018 to current year.  TURBIDITY: Feb. 2018 to current year.
INSTRUMENTATION - Water-quality monitor.  Electronic data logger set for 15-minute interval.
REMARKS -

Feb. 6, 2018 to Oct. 11, 2018: Water temperature records good.  pH records good except for Oct. 8, 2018 to Oct. 11, 2018, which are fair.  Dissolved oxygen records good.  Turbidity records fair.  Specific conductance records fair except Feb. 6, 2018 to Aug. 8, 2018, which are poor. 

Daily mean concentration and daily mean load records poor. 

Water quality data collected at this site 1969 to 1977 and 2013 to current year.

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
EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum: 1,310 microsiemens, Feb. 26, 2021.  Minimum: 233 microsiemens, May 22, 2019.  pH: Maximum: 9.1 units, July 28-29, 2018 Minimum: 7.13 units, July 07, 2022.  WATER TEMPERATURE: Maximum: 31.4 degrees Celsius, July 4, 2020.  Minimum: 0.03 degrees Celsius, Feb. 7, 2021. DISSOLVED OXYGEN: Maximum: 24.7 mg/L, July 12, 2018.  Minimum: 2.5 mg/L, July 12, 2020: TURBIDITY: Maximum: 595 FNUs, May 17, 2019. Minimum: 1.3 FNUs, Sept. 04, 2023.