USGS Water-Year Summary 2021
073816525 Mouth of Atchafalaya River at Atchafalaya Bay
LOCATION - Lat 29°25'48.9", long 91°20'02" referenced to North American Datum of 1983, St. Mary Parish, LA, Hydrologic Unit 08080101, Located approx 19.5 miles southwest of Morgan City, LA and 5 miles northeast of NOAA Eugene Island tidal station, on US Coast Guard channel light #43.
DRAINAGE AREA - Indeterminate
PERIOD OF RECORD - May 2015 to present.
GAGE - Water-stage recorder. Datum of gage is assumed.
COOPERATION - United States Corps of Engineers, New Orleans District
EXTREMES FOR PERIOD OF RECORD - Maximum recorded gage height, 9.56ft, Hurricane Laura, Aug 27, 2020; minimum recorded gage height, 2.44ft, Jan 17, 2018.