USGS Water-Year Summary 2024
293809092361500 CRMS0609
LOCATION - Lat 29°38'09", long 92°36'15" referenced to North American Datum of 1983, Vermilion Parish, LA, Hydrologic Unit 08080202, Approximately 3.5 miles north of the intersection of Pigeon Bayou and Bayou Constance.
DRAINAGE AREA - Indeterminate
REVISIONS HISTORY - Specific conductance records for the period Jun. 13, 2022 to Sep. 12, 2022 were revised on Jan. 11, 2023 due to a drift correction error that was discovered required the removal of that correction.
SURFACE-WATER RECORDS
PERIOD OF RECORD - May 2009 to current year.
GAGE - Water-stage recorder. Datum of gage is 1.19 feet below NAVD88 Geoid12B.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 9.93 ft, Aug. 27, 2020 (Max gage height may have exceeded POR during time of missing data from Hurricane Laura); minimum gage height, 0.56 ft, Jan. 24, 2014.
WATER-QUALITY RECORDS
PERIOD OF RECORD - May 2009 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: May 2009 to current year.
SALINITY: May 2009 to current year.
WATER TEMPERATURE: May 2009 to current year.
INSTRUMENTATION - Water-quality monitor recording specific conductance, salinity, and water temperature.
EXTREMES FOR PERIOD OF RECORD - SPECIFIC CONDUCTANCE: Maximum, 84,000 microsiemens/cm, Aug. 2, 2023; minimum, 357 microsiemens/cm, Aug. 31, 2016.
SALINITY: Maximum, 32.6 ppt, Jun. 5, 2012; minimum, 0.2 ppt, on many days.
TEMPERATURE: Maximum, 39.9°C, Aug. 15, 16, 2023; minimum, -1.3°C, Jan. 29, 2014 and Jan. 1, 2018.