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Water-Year Summary for Site USGS 07352820

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00065 Gage height(Mean)  
62614 Elevation, lake/res, NGVD29(Mean)  

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

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USGS Water-Year Summary 2021
07352820 Grand Bayou Reservoir at spillway nr Coushatta, LA
LOCATION - Lat 31°59'55.64", long 93°12'47.76" referenced to North American Datum of 1983, Red River Parish, LA, Hydrologic Unit 11140209, located on a 12' x 12' wooden platform 140 feet west of the Grand Bayou Reservoir spillway near Coushatta, Louisiana.
PERIOD OF RECORD - May 7, 2013 to current year.
GAGE - Water-stage recorder. Datum of gage is 93.37 ft above NGVD of 1929 (levels by Louisiana Department of Transportation and Development).
COOPERATION - Louisiana Department of Transportation and Development.
REMARKS - Reservoir is formed on Grand Bayou by concrete spillway and earthfill dam. The crest of the spillway is 45.13 ft gage datum, 138.5 ft NGVD of 1929. Reservoir is used for water supply and recreation. Satellite telemetry at station.