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Water-Year Summary for Site 175829066232200

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Available Parameters
72019 Water level, depth LSD(Obs.)  

Water year 2025: 2025-10-01 to 2026-09-30
 
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USGS Water-Year Summary 2025
175829066232200 87. ALOMAR 1 WELL, SANTA ISABEL, PR
South Coast aquifer (Puerto Rico)
South Coastal Plain Alluvial Aquifer
LOCATION - Lat 17°58'29", long 66°23'22" referenced to North American Datum of 1927, Santa Isabel Municipio, PR, Hydrologic Unit 21010004,

1.1 mi (1.77 km) northeast of Santa Isabel plaza, 3.69 mi (5.94 km) southeast of Playita Cortada School, and 1.07 mi (1.72 km) southeast of Estación Experimental Santa Isabel; Name: Alomar 1 Well, Santa Isabel, PR.

 

GROUNDWATER RECORDS
DATUM - Land-surface datum is 39.4 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF RECORDER SHELTER FLOOR, 35.4 ft above National Geodetic Vertical Datum of 1929, Nov. 1, 1960 to Sep. 1, 1981; BOTTOM OF CLEAN-OUT SHELTER DOOR, 36.9 ft above National Geodetic Vertical Datum of 1929, Aug. 1, 1981 to Apr. 1, 2008; BELOW SHELTER, OPEN SIDE DOOR, MEASURE FROM LOWER HORIZONTAL PART OF OPENING, 36.9 ft above National Geodetic Vertical Datum of 1929, Jan. 28, 2003 to present.
PERIOD OF RECORD - November 1, 1960 to current year.
GAGE - Recording ground water levels every fifteen minutes. 
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 - October 1, 1989 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level recorded, 27.98ft., below land-surface datum, December 19, 2017; lowest water level recorded, 46.98 ft., below land-surface datum, August 26, 2022.
WATER-QUALITY RECORDS
DATUM - Land-surface datum is 39.4 ft above National Geodetic Vertical Datum of 1929. Measuring point: TOP OF RECORDER SHELTER FLOOR, 35.4 ft above National Geodetic Vertical Datum of 1929, Nov. 1, 1960 to Sep. 1, 1981; BOTTOM OF CLEAN-OUT SHELTER DOOR, 36.9 ft above National Geodetic Vertical Datum of 1929, Aug. 1, 1981 to Apr. 1, 2008; BELOW SHELTER, OPEN SIDE DOOR, MEASURE FROM LOWER HORIZONTAL PART OF OPENING, 36.9 ft above National Geodetic Vertical Datum of 1929, Jan. 28, 2003 to present.
PERIOD OF RECORD - November 1, 1960 to Aprl 16, 2008.