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Water-Year Summary for Site USGS 07387040

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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)  
00065 Gage height(Max.,Min.,Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00480 Salinity(Max.,Min.,Mean)  

Water year 2024: 2024-10-01 to 2025-09-30
 
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USGS Water-Year Summary 2024
07387040 Vermilion Bay near Cypremort Point, LA
LOCATION - Lat 29°42'47", long 91°52'49" referenced to North American Datum of 1927, St. Mary Parish, LA, Hydrologic Unit 08080103, on a 36"x30' steel platform. 1200 feet south southwest of Cypermort Point.
DRAINAGE AREA - Indeterminate.
REVISIONS HISTORY - Datum of gage was published incorrectly 2003 through 2008 and 2009 through 2012 water years.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1997 to current year. Prior to October 1997 records are located at Louisiana Department of Wildlife and Fisheries.
GAGE - Water-stage recorder. Datum of gage is 1.48 feet below NAVD88 GEOID12a. September 25, 2003 to August 20, 2008, 0.79 feet below NAVD88 GEOID12a. Prior to September 25, 2003 datum of gage was NAVD88.
REMARKS - Site affected by wind and tide. Satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - Maximum recorded gage height, 10.93ft, Aug 27, 2020; minimum recorded gage height, -2.50ft, Jan 20, 2019.
WATER-QUALITY RECORDS
PERIOD OF RECORD - April 1997 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: April 1997 to current year. SALINITY: October 2002 to current year. WATER TEMPERATURE: April 1997 to current year.
INSTRUMENTATION - Water-quality monitor recording water level, specific conductance, water temperature, and wind speed and direction.
EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum, 34,000 microsiemens/cm, Sep. 06, 2012; minimum, 140 microsiemens/cm, May 21, 2021. SALINITY: Maximum, 21.3 ppt, Sep. 06, 2012; minimum, 0.1 ppt occured on many days. WATER TEMPERATURE: Maximum, 34.9°C, July 20, 2004; minimum, 1.9°C, Jan. 10, 2010.