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Water-Year Summary for Site 50106850

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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
50106850 LAGO COAMO NEAR LOS LLANOS, PR
LOCATION - Lat 18°00'58.39", long 66°23'22.58" referenced to North American Datum of 1927, Coamo Municipio, PR, Hydrologic Unit 21010004,

on left bank, 5.05 mi (8.13 km) southwest of Coamo town Church, 3.8 mi (6.11 km) west Río Jueyes School, and 2.75 mi (4.40 km) south from Santaella School left of Las Marías on State Road 14.

 

***FOR ACCURATE $word USE COORDINATES IN MAP'S SECTION***


DRAINAGE AREA - 66.6 mi². (172.5 km2).
REVISIONS HISTORY - Datum of gage was previously reported as 165.03 ft (50.3 m) above NGVD 29 and LMSL-Old PR. Published historical records did not reflect this site file typo. Revised to PRVD02 Datum of -0.80 ft (-0.24 m) in October 2023.
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 2004 to current year.
GAGE - Water-stage recorder, satellite and radio telemetry at station. Elevation of gage is 0.8 ft. (0.24 m) below Puerto Rico Vertical Datum of 2002 (PRVD02) and at Local Mean Sea Level (LMSL-Old PR). 
COOPERATION - Puerto Rico Electrical Power Authority (PREPA).
REMARKS - Lago Coamo was completed in 1914 by Puerto Rico Irrigation Service. It is an Ambursen type concrete dam 65 ft (19.8 m) in height with a maximum storage capacity of 2,827 acre-ft (3.46 hm3), but accumulated sediments has reduced its capacity to about 80 acre-ft (0.097 hm3) (estimated). Actually the dam is been dredge to recover some 800 acre-ft (0.978 hm3) to be used for domestic water supply.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 172.27 ft (52.51 m), August 23, 2011; minimum elevation, 158.45 ft (48.29 m), August 15, 2015
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - October 2016 to current year.
INSTRUMENTATION - Tipping bucket precipitation gage and data collection platform – 15 minutes interval.