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Water-Year Summary for Site 50111300

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Available Parameters
00045 Precipitation(Sum)  
72375 Elevation, lake/res, LMSL(Obs.) [OLDPR]  
72379 Elevation, lake/res, PRVD02(Obs.)  

Water year 2024: 2023-10-01 to 2024-09-30
 
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USGS Water-Year Summary 2024
50111300 LAGO GUAYABAL AT DAMSITE NEAR JUANA DIAZ, PR
LOCATION - Lat 18°05'16.06", long 66°30'07.42" referenced to North American Datum of 1927, Juana Diaz Municipio, PR, Hydrologic Unit 21010004, at Damsite, 2.3 mi (3.7 km) northeast from Juana Díaz plaza, 0.7 mi (1.13 km) northeast from Salvador Bousquets School, and 2.45 mi (3.94 km) southeast from Zoilo Gracia School.
DRAINAGE AREA - 43.28 mi². (42.1 km2).
REVISIONS HISTORY - Datum of gage was previously reported in the site file as 328.1 ft (100.0 m) above NGVD29 and LMSL-Old PR. NGVD29 datum does not exist in Puerto Rico and the correct LMSL-Old PR elevation is 300 ft (91.4 m), published historical records did not reflect this site file typo. Revised to PRVD02 Datum of 299.84 ft. (91.4 m) in October 2022. 
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 20, 1995 to current year.
GAGE - Water-stage recorder, satellite and radio telemetry at station. Datum of gage is 299.84 ft. (91.4 m) Puerto Rico Vertical Datum of 2002 (PRVD02) and 0.16 (0.05 m) below Local Mean Sea Level (LMSL- Old PR).
COOPERATION - Puerto Rico Electrical Power Authority (PREPA).
REMARKS - Lago Guayabal was completed in 1913. The dam is a reinforced concrete, flatslab and buttress-type structure about 130 ft (40 m) height, a net crest length at the right side of the dam of 693 ft (211 m) and a crest elevation of 331 ft (101 m). It has a maximum storage capacity of 7,600 acre-ft (9.37 hm3). The Lago Guayabal dam primary purpose is for irrigation of lands served by the Juana Díaz Irrigation canal.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 342.89 ft (104.51 m), April 26, 2002; minimum elevation, 325.99 ft (99.36 m), September 29, 1997.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - Precipitation record from 08/19/2018 to present