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Water-Year Summary for Site 07019000

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Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Obs.)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
07019000 MERAMEC RIVER NEAR EUREKA, MO
LOCATION - Lat 38°30'18.5", long 90°35'24.6" referenced to North American Datum of 1983, in SE 1/4 sec.32, T.44 N., R.4 E., St. Louis County, MO, Hydrologic Unit 07140102, on right bank, 44 ft upstream from bridge on north access roadway of I-44, 2.0 mi east of Eureka, 3.0 mi downstream from Big River, and at mile 34.1.
DRAINAGE AREA - 3,788 mi².
REVISIONS HISTORY - WSP 877: 1938(M). WSP 977: 1942. WSP 1007: Drainage area. WSP 1281: 1924-25.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Aug 1903 to Jul 1906, Oct 1921 to current year. Monthly discharge only for Jan, Feb, and Mar 1904, published in WSP 1311.
GAGE - Water-stage recorder. Datum of gage is 403.61 ft above North American Vertical Datum of 1988. Prior to Jan 17, 1933, nonrecording gage at site 200 ft upstream from now defunct gage tower at different datum; Jan 17, 1933, to Sep 22, 1937, nonrecording gage; Sep 23, 1937, to Sep 30, 1971, water-stage recorder at previous site at datum 2.00 ft higher. July 16, 2015, gage moved 450 ft upstream to Interstate-44 bridge and different gage pool, approximately 1 ft higher stage, same datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS MO Water Science Center.  
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Aug 22, 1915, reached a stage of 42.2 ft, present datum, from floodmarks, discharge, 175,000 ft³/s, by slope-area measurement of peak flow.