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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.
USGS Water-Year Summary 2024
073816202 GULF INTRACOASTAL WATERWAY AT MILE 103 SOUTH OF MORGAN CITY, LA
LOCATION - Lat 29°38'58", long 91°18'15" referenced to North American Datum of 1983, St. Mary Parish, LA, Hydrologic Unit 08080101, on left bank of stream, mile 103 of GIWW, and four miles west of Lower Atchafalaya River.
DRAINAGE AREA - Indeterminate.
SURFACE-WATER RECORDS
PERIOD OF RECORD - January 1998 to December 2017. Unpublished data prior to Oct. 1, 2001, housed at the USGS Louisiana Water Science Center.
GAGE - Water-stage recorder. Datum of gage is 0.98 feet below NAVD 88 GEOID12a.
REMARKS - Records good. Satellite telemetry at station. Discharge measurements and suspended sediment collected as part of GIWW synoptic.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 7.74 ft, May 29, 2011, minimum recorded gage height, -0.47 ft, Aug. 29, 2012.
