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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.
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USGS Water-Year Summary 2024
295314091312101 SM- 58
Coastal lowlands aquifer system
Atchafalaya Aquifer
Atchafalaya Aquifer
LOCATION - Lat 29°53'14", long 91°31'21" referenced to North American Datum of 1927, in sec.30, T.13 S., R.9 E., St. Mary Parish, LA, Hydrologic Unit 08080102, located 25 ft from the centerline of Hwy 324, west of Hwy 87 in Charenton, LA.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 194 ft. Upper casing diameter 2 in; top of first opening 188 ft, bottom of last opening 194 ft.
DATUM - Land-surface datum is 9.54 ft above North American Vertical Datum of 1988. Measuring point: Top of 2-in. casing, 2.0 ft above land-surface datum, Mar. 22, 1966 to present.
PERIOD OF RECORD - Discrete measurements from March 1966 to current year. Continuous record from November 2021 to current year.
GAGE - Water level recorder and satellite telemetry.
COOPERATION - Louisiana Department of Transportation and Development, Public Works and Water Resources Division and U.S. Geological Survey, Office of Groundwater.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 3.35 ft, below land-surface datum (measured), Feb. 24, 1974. Lowest water level, 9.76ft, below land-surface datum (recorded), Nov. 28, 2023.
