USGS Water-Year Summary for Site USGS 073802514

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	Available Parameters
	00010 Temperature, water(Mean)
	00065 Gage height(Mean)
	00095 Specific cond at 25C(Mean)
	00300 Dissolved oxygen(Mean)
	00400 pH(Mean)
	32316 fChl, water, in situ(Mean)
	63680 Turbidity, Form Neph(Mean)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

073802514 Barataria Waterway at Champagne Bay nr Grand Isle

LOCATION - Lat 29°20'01.0", long 89°59'18.6" referenced to North American Datum of 1983, Jefferson Parish, LA, Hydrologic Unit 08090301, located on top of 6ftx6ft platform approximately 5.2 miles NNW of NOAA Grand Isle, LA tidal station

REVISIONS HISTORY - Specific conductance data for Mar 11, 2019 was edited on Sep 19, 2019 to reflect actual values; salinity data is also affected for this time period.

SURFACE-WATER RECORDS

PERIOD OF RECORD - November 2017 to present.

GAGE - Water level recorder consist of a non-contact water stage recorder housed in an aluminum shelter approximately 15ft above water level. Datum of gage is 1.90ft below NAVD88 (GEOID12B) EPOCH 2010.0000.

COOPERATION - Louisiana Coastal Protection and Restoration Authority

REMARKS - Site affected by wind and tide. Satellite telemetry at station.

EXTREMES FOR PERIOD OF RECORD - Maximum recorded gage height, 6.47ft, on Jul 12, 2019; Hurricane Barry. Minimum recorded gage height on 0.67ft, Jan 17 2018.

WATER-QUALITY RECORDS

PERIOD OF RECORD - November 2017 to present

INSTRUMENTATION - Water quality multiprobe collecting water temperature, specific conductance, dissolved oxygen, pH, chlorophyll, and turbidity.

REMARKS - Turbidity data considered poor due to severe biofouling at the site location and extreme wind events causing significant turbulence.

EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum recorded, 50,100 microsiemens/cm, Jan 21, 2018; minimum recorded, 1450 microsiemens/cm, Nov 10, 2019.
SALINITY: Maximum recorded, 33.0 ppt, Jan 21, 2018; minimum recorded, 0.7ppt Nov 10, 2018.
WATER TEMPERATURE: Maximum recorded, 35.0°C, Sep 18, 2018; minimum recorded, 4.0°C, Jan 4, 2018.
PH: Maximum recorded, 9.5 std. units, Jan 8, 2019, minimum recorded, 7.2 std. units, on Sep 29, 2018.
DISSOLVED OXYGEN: Maximum recorded, 20.0 mg/L, Feb 11, 2019; minimum recorded, 1.0 mg/L, Sep 15, 2019.
TURBIDITY: Maximum recorded, 456 FNU, Feb 21, 2020, Minimum recorded, 1.4 FNU, Jan. 15, 2020.