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Water-Year Summary for Site 07374000

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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)  
00065 Gage height(Max.,Min.,Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Mean)  
00400 pH(Max.,Min.,Med.)  
00480 Salinity(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Mean,Max.,Min.)  
99133 NO3+NO2,water,insitu(Mean)  

Water year 2019: 2018-10-01 to 2019-09-30
 

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USGS Water-Year Summary 2019
07374000 Mississippi River at Baton Rouge, LA
LOCATION - Lat 30°26'44.4", long 91°11'29.6" referenced to North American Datum of 1983, in sec.45, T.7 S., R.1 W., West Baton Rouge Parish, LA, Hydrologic Unit 08070100, located on a city Pier, approximately 1.5 mi upstream of the Port Allen Locks, between the I-10 and Hwy. 190 bridges over the river.
DRAINAGE AREA - 1125810 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 2004 to current year. Miscellaneous measurements made at site prior to 1976.
GAGE - Water-stage recorder and water-quality monitor. Datum of gage is NAVD 88.
REMARKS - Records are good. Discharge affected by tide at very low stages. Satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,436,000 ft³/s, May 18-19, 2011; maximum gage height, 45.48 ft, May 18-19, 2011; minimum recorded discharge, 132,800 ft³/s, Oct. 31, 2012; minimum recorded gage height, 3.43 ft, Oct. 31, 2012.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1975-76, 1988, 1991-current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: October 2004 to current year. WATER TEMPERATURE: October 2004 to current year. PH: October 2004 to current year. DISSOLVED OXYGEN: October 2004 to current year. TURBIDITY: October 2011 to current year. NITRATE: November 2011 to current year.
INSTRUMENTATION - Water-quality monitor recording temperature, specific conductance, pH, dissolved oxygen, and turbidity. A second monitor is recording nitrate.
EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum, 634 microsiemens/cm, Aug. 23, 2018; minimum, 241 microsiemens/cm, Mar. 18-19, 2019.  WATER TEMPERATURE: Maximum, 32.7°C, Aug. 03, 2012; minimum, 2.3°C, Jan. 16, 2010. PH: Maximum, 8.6 std. units, Mar. 14, 15, 2009; minimum, 6.9 std. units, Mar. 19-20, 2018. DISSOLVED OXYGEN: Maximum, 13.4 mg/L, Feb. 14, 15, 16, 2011; minimum, 5.0 mg/L, Sept. 20, 2018. TURBIDITY: Maximum, 1030 FNU, Apr. 26, 2011; Minimum, 3.8 FNU, Jul. 7, 2012. NITRATE: Maximum, 3.10 mg/L, Jul. 25, 2014; Minimum, 0.22 mg/L, Sept. 11, 12, 13, 2012.