USGS Water-Year Summary 2023
073802516 Barataria Pass at Grand Isle, LA
LOCATION - Lat 29°16'22.2", long 89°56'48.5" referenced to North American Datum of 1983, Jefferson Parish, LA, Hydrologic Unit 08090301, on a 36"x30' steel platform .35 miles east of Grand Isle
DRAINAGE AREA - Indeterminate.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 2008 to current year.
GAGE - Water-stage recorder. Datum of gage is 6.314 ft below NAVD 88.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height recorded, 10.68 ft, Sept. 3, 2011; minimum gage height, 3.88 ft, Jan 22, 2016.
WATER-QUALITY RECORDS
PERIOD OF RECORD - August 2008 to current year.
INSTRUMENTATION - Water-quality monitor recording specific conductance and water temperature.
EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum, 61,400 microsiemens/cm, June 30, 2015; minimum, 3,450 microsiemens/cm, Jun. 18, 2011.
SALINITY: Maximum, 41.4 ppt, June 30, 2015; minimum, 1.8 ppt, Jun. 18, 2011.
WATER TEMPERATURE: Maximum, 35.1°C, Aug. 23, 2014, Aug. 18, 2017 ; minimum, 3.8°C, Jan. 18, 2018.