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USGS Water-Year Summary 2025
180057066311300 403. PIEZOMETER JAC-6, JUANA DIAZ, PR
South Coast aquifer (Puerto Rico)
South Coastal Plain Alluvial Aquifer
South Coastal Plain Alluvial Aquifer
LOCATION - Lat 18°00'57", long 66°31'13" referenced to North American Datum of 1927, Juana Diaz Municipio, PR, Hydrologic Unit 21010004, 0.2 mi (0.32 km) south of Haciena Cintrona Primera, 1.2 mi (1.93 km) northeast of Arus, and 2.9 mi (4.67 km) east of Central Mercedita.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 49 ft. Upper casing diameter 2 in; top of first opening undefined, bottom of last opening undefined.
DATUM - Land-surface datum is 47 ft above National Geodetic Vertical Datum of 1929. Measuring point: unknown, 47 ft above National Geodetic Vertical Datum of 1929, Sep. 14, 1988 to present; TOP OF SHELTER FLOOR, 43.33 ft above National Geodetic Vertical Datum of 1929, Dec. 17, 2008 to present.
PERIOD OF RECORD - September 14, 1988 to current year.
GAGE - Water level data recorded in 15 minutes interval, satellite telemetry at station.
COOPERATION - Funding for site provided by the Puerto Rico Environmental Quality Board and the U.S. Geological Survey.
REMARKS - Water level affected by pumping of nearby well.
PERIOD OF DAILY RECORD - October 25, 1989 to January 4, 1990. December 28, 2010 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 13.78 ft., below land-surface datum, September 24, 2017; lowest water level recorded, 30.79 ft., below land-surface datum, August 27, 2022.
WATER-QUALITY RECORDS
WELL CHARACTERISTICS - Depth 49 ft. Upper casing diameter 2 in; top of first opening undefined, bottom of last opening undefined.
DATUM - Land-surface datum is 47 ft above National Geodetic Vertical Datum of 1929. Measuring point: unknown, 47 ft above National Geodetic Vertical Datum of 1929, Sep. 14, 1988 to present; TOP OF SHELTER FLOOR, 43.33 ft above National Geodetic Vertical Datum of 1929, Dec. 17, 2008 to present.
PERIOD OF RECORD - March 13, 2008 to April 17, 2008.
