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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.
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USGS Water-Year Summary 2024
07381350 Company Canal at Hwy 1 at Lockport, LA
LOCATION - Lat 29°38'42", long 90°32'41" referenced to North American Datum of 1927, Lafourche Parish, LA, Hydrologic Unit 08090302, on downstream side of the north support pier of U.S. Highway 1 drawbridge.
DRAINAGE AREA - Indeterminate.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 2002 to current year.
GAGE - Water-stage recorder. Datum of gage is 0.70 feet below NAVD 88 GEOID09.
REMARKS - Site affected by wind and tide. Satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 4.52 ft, Aug. 29, 2021 ; minimum gage height, -0.37 ft, Jan 7, 2006.
WATER-QUALITY RECORDS
PERIOD OF RECORD - 1956 (inorganics only); 1979-80 (specific conductance); 1981-85, 2002 (specific conductance and temperature); October 2002 to current year.
INSTRUMENTATION - Water-quality monitor recording specific conductance and water temperature.
EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum, 10,100 microsiemens/cm, Oct. 16, 19, 2006; minimum, 73 microsiemens/cm, Aug. 20, 2016.
SALINITY: Maximum, 5.7 ppt, Oct. 16, 19, 2006; minimum, 0.0 ppt, on many days during Aug. 2016.
WATER TEMPERATURE: Maximum, 35.6°C, Aug. 4, 2023; minimum, 1.0°C, Dec. 25, 26, 1983.
