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Water-Year Summary for Site 50106850

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00045 Precipitation(Sum)  
62614 Elevation, lake/res, NGVD29(Obs.)  

Water year 2019: 2018-10-01 to 2019-09-30

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USGS Water-Year Summary 2019
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.
DRAINAGE AREA - 66.6 mi². (172.5 km2).
PERIOD OF RECORD - November 2004 to current year.
GAGE - Water-stage recorder, satellite and radio telemetry at station. Elevation of gage is above National Geodetic Vertical Datum (NGVD) of 1929, feet.
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
PERIOD OF RECORD - October 2016 to current year.
INSTRUMENTATION - Tipping bucket precipitation gage and data collection platform – 15 minutes interval.