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Water-Year Summary for Site USGS 301001089442600

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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.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00065 Gage height(Max.,Min.,Mean)  
00095 Specific cond at 25C(Mean,Max.,Min.)  
00480 Salinity(Max.,Min.,Mean)  

Water year 2024: 2024-10-01 to 2025-09-30
 
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USGS Water-Year Summary 2024
301001089442600 Rigolets at Highway 90 near Slidell, LA
LOCATION - Lat 30°10'01", long 89°44'26" referenced to North American Datum of 1983, Orleans Parish, LA, Hydrologic Unit 08090203, underneath LA Hwy 90 bridge between Lake Pontchartrain and Lake Borgne.
DRAINAGE AREA - Indeterminate.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Fragmentary records February 2004 to September 2007, in files of the USGS, Baton Rouge Field Office, LWSC. October 2007 to current year.
REMARKS - Datum of gage is 1.00 ft below NAVD88 GEOID09. Satellite telemetry at station. Site affected by wind and tide. All parameters are affected during periods of opening of Bonnet Carre Spillway near Norco, LA.
EXTREMES FOR PERIOD OF RECORD - Maximum recorded gage height, 9.57 ft, Aug. 30, 2012; minimum recorded gage height, -1.80 ft, Jan. 2, 2008.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: October 2006 to current year. February 2004 to September 2005. SALINITY: October 2006 to current year. February 2004 to September 2005. WATER TEMPERATURE: October 2006 to current year. February 2004 to September 2005. PH: October 2006 to September 2007. February 2004 to September 2005. DISSOLVED OXYGEN: October 2006 to September 2007. February 2004 to September 2005.
COOPERATION - Louisiana Department of Wildlife & Fisheries.
INSTRUMENTATION - Water-quality monitor recording temperature and specific conductance.
EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum, 51,000 microsiemens/cm, Aug. 29, 2012; minimum, 101 microsiemens/cm, on March 01, 2020.   SALINITY: Maximum, 33.4 ppt, Aug. 29, 2012; minimum, 0.1 ppt, on many days.  WATER TEMPERATURE: Maximum, 34.0°C, Jul. 29, 2021; minimum, 4.0°C, Jan. 10, 2010.