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Water-Year Summary for Site 04181049

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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
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
04181049 St Marys River at Walcot Street at Willshire OH
LOCATION - Lat 40°44'56", long 84°47'21" referenced to North American Datum of 1983, Van Wert County, OH, Hydrologic Unit 04100004, on the downstream side of the OH-81 bridge. 
DRAINAGE AREA - 386 mi².  
PERIOD OF RECORD - March 2017 to current year. 
GAGE - Water stage recorder. Datum of gage is 774.33 ft (NAVD 1988).

Mar. 1, 2017 to Nov. 6, 2017: records fair, 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.

REMARKS - As part of the Western Lake Erie Basin project, water-quality sampling began in March 2017 and water-quality concentrations and loads began being computed in March 2017. Automatic samples are collected with an ISCO auto sampler that is housed in the gage house. Monthly and rainfall-runoff event cross sectional samples are collected at this station. Sampling includes: Suspended-sediment (80154), Nitrogen, ammonia as N (00608), Nitrogen, ammonia + organic nitrogen (total, whole water, also known as total Kjeldahl nitrogen (TKN); 00625), Nitrogen, nitrite + nitrate (filtered water; 00631), Phosphorus, phosphate, ortho (also know as dissolved reactive phosphorus (DRP) or soluble reactive phosphorus; 00671), and Phosphorus (total, whole water; 00665).