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Water-Year Summary for Site 07374526

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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
07374526 Black Bay nr Snake Island nr Point-A-LA-Hache, LA
LOCATION - Lat 29°38'00", long 89°33'49" referenced to North American Datum of 1927, Plaquemines Parish, LA, Hydrologic Unit 08090203, on a three-pile platform 13 miles northeast of Pointe-A-La-Hache.
DRAINAGE AREA - Not applicable. Site is located in open water.
REVISIONS HISTORY - Period of record minimum revised to reflect the datum used prior to October 1, 1995.
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 1992 to current year.
GAGE - Water-stage recorder. Datum of gage is 0.286 feet below NAVD88 GEOID12b EPOCH 2010.0000. Prior to Sep. 19, 2012, datum of gage was 0.70 ft below NAVD 88. Prior to Oct. 1, 1995, datum of gage was 8.45 ft below NGVD29.
REMARKS - Site affected by wind and tide. Satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - Maximum recorded gage height, 12.83 ft, Sept. 1, 2008, but may have been higher during period of missing record due to Hurricanes Gustav and Isaac; minimum recorded gage height, -4.61 ft, Oct. 28, 2021.
WATER-QUALITY RECORDS
PERIOD OF RECORD - March 1992 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: March 1992 to current year. SALINITY: October 2002 to current year. WATER TEMPERATURE: June 1992 to current year.
INSTRUMENTATION - Water-quality monitor recording specific conductance and water temperature.
EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum recorded, 48,600 microsiemens/cm, Aug. 28, 2012, but may have been higher during period of missing record due to Hurricane Isaac; minimum record,292 microsiemens, Dec 12, 2010, . SALINITY: Maximum record, 31.8 ppt, Aug. 28, 2012; minimum record, 0.1 ppt, Dec. 12, 2010. WATER TEMPERATURE: Maximum record, 35.2°C, Aug 23, 2011; minimum record, 2.1°C, Jan. 18, 1997.