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Water-Year Summary for Site 07381482

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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)  
00065 Gage height(Mean)  

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

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USGS Water-Year Summary 2022
07381482 Old River Outflow Channel below Hydropower Channel
LOCATION - Lat 31°04'00.3", long 91°38'53.8" referenced to North American Datum of 1983, Concordia Parish, LA, Hydrologic Unit 08040301,
DRAINAGE AREA - Indeterminate.

Parameter codes 80154 (suspended sediment concentration, mg/L), 80155 (suspended sediment discharge, tons/day), and 70331 (suspended sediment sieve diameter percent <0.0625 mm) were revised in November 2018, as described in USGS SIR 2018-5147 (https://pubs.er.usgs.gov/publication/sir20185147) for the period Oct. 2, 1989 to February 3, 2015.

PERIOD OF RECORD - February 28, 2009 to current year.
GAGE - Water-stage recorder and acoustic velocity meter. Datum of gage is 0.57 ft below NAVD 88.
REMARKS - Site affected by regulations from Old River Auxiliary Control Structure, Old River Lowsill Control Structure and and the Sidney A. Murray Jr. Hydroelectric Plant.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 730,000 ft³/s, May 20, 2011; maximum gage height, 46.97 ft, May 16, 2018; minimum discharge, 26,600 ft³/s, Aug. 31, 2022; minimum gage height, e3.52 ft, Aug. 29, 2012.