USGS Water-Year Summary 2021
07381328 Houma Navagation Canal at Dulac, LA
LOCATION - Lat 29°23'06", long 90°43'47" referenced to North American Datum of 1927, Terrebonne Parish, LA, Hydrologic Unit 08090302, on a pile cluster 2 miles west of Dulac, LA.
DRAINAGE AREA - Indeterminate.
PERIOD OF RECORD - May 1992 to September 2002, gage height only. July 2002 to current year, gage height and discharge.
GAGE - Water-stage recorder and acoustic velocity meter. Prior to July 2002, site was located on pontoon bridge 200 ft upstream of present location. Datum of gage is 0.02 ft above NAVD 88 GEOID03. Prior to Oct 1, 1995, datum of gage was 10.00 ft below NGVD 1929.
EXTREMES FOR PERIOD OF RECORD - Maximum positive discharge, 19,900 ft³/s, Sept. 5, 2011; maximum recorded gage height, 7.17 ft, Sep 12, 2008; maximum recorded negative discharge, -52,800 ft³/s, Sep 12, 2008; minimum recorded gage height, -1.42 ft, Jan 8, 1996. Extremes may have been exceeded during period of missing record due to hurricane Rita and Ike.
PERIOD OF RECORD - May 1992 to current year.
PERIOD OF DAILY RECORD -
SPECIFIC CONDUCTANCE: April 1992 to current year.
SALINITY: October 2002 to current year.
WATER TEMPERATURE: June 1992 to current year.
INSTRUMENTATION - Water-quality monitor recording specific conductance, salinity, and water temperature.
EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum recorded, 45,700 microsiemens/cm, May 18, 2000; minimum, 122 microsiemens/cm, Feb 18, 1996.
SALINITY: Maximum, 28.4 ppt, Oct 16, 2007; minimum, 0.1 ppt, many times.
WATER TEMPERATURE: Maximum, 34.2°C, Aug 6, 1999 and Aug 14, 2007; minimum, 4.3°C, Jan 3, 2018.