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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
180052066471000 1366. MERCADO 3 WELL, GUAYANILLA, PR
Other aquifers
Guayanilla Alluvial Aquifer
Guayanilla Alluvial Aquifer
LOCATION - Lat 18°00'53.5", long 66°47'11.3" referenced to North American Datum of 1927, Guayanilla Municipio, PR, Hydrologic Unit 21010004, 0.4 mi (0.64 km) southeast of Guayanilla town square, 0.6 mi (0.97 km) east of Municipal Cemetery, and 1.0 mi (1.61 km) northwest of Guayanilla bay.
GROUNDWATER RECORDS
DATUM - Land-surface datum is 13.12 ft above National Geodetic Vertical Datum of 1929. Measuring point: ONE-INCH PIPE ON TOP OF CONCRETE BASE, PROTECTION COVER, AND SHELTER FOR EQUIPMENT INSTALLED., 1.60 ft above land-surface datum, Feb. 8, 2007, to present.
PERIOD OF RECORD - October 20, 1960 to current year.
GAGE - Water-stage recorder 60 minute interval, satellite telemetry at station.
COOPERATION - Funding for site provided by the Puerto Rico Department of Natural and Environmental Resources and the U.S. Geological Survey.
PERIOD OF DAILY RECORD - August 4, 2009 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water-level recorded, 1.37 ft., below land-surface datum, November 11, 2010. Lowest water-level recorded, 12.49 ft., below land surface datum on August 18, 2014.
WATER-QUALITY RECORDS
DATUM - Land-surface datum is 13.12 ft above National Geodetic Vertical Datum of 1929. Measuring point: ONE-INCH PIPE ON TOP OF CONCRETE BASE, PROTECTION COVER, AND SHELTER FOR EQUIPMENT INSTALLED., 1.60 ft above land-surface datum, Feb. 8, 2007, to present.
PERIOD OF RECORD - October 20, 1960 to August 10, 1962.
