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Water-Year Summary for Site 50075550

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
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°15'49.26", long 65°47'05.95" referenced to North American Datum of 1927, Naguabo Municipio, PR, Hydrologic Unit 21010005, in Caribbean National Forest at State Road 191 at El Yunque, 5.5 mi (1.68 km) east of Cubuy School, 4.3 mi (1.31 km) west of Sonadora School in Ceiba, and 6.1 mi (1.86 km) northwest of Naguabo plaza.
DRAINAGE AREA - 2.85 mi², (7.38 km2).
PERIOD OF RECORD - March 10, 2004 to September 30, 2011, October 1, 2011 to October 1, 2014 lake dry. October 2, 2014 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 Electric Power Authority (PREPA).
REMARKS - Lago Icacos, a small reservoir built in 1930, is part of the Río Blanco Hydroelectric Power System. The reservoir's original storage capacity was 15.506 acre-ft (0.0191 hm3). The bathymetric survey conducted in March 2004 indicates a storage capacity of 6.030 acre-ft (0.007 hm3) or 39% of the original storage capacity, and a maximum depth of 17 ft (5.3 m). The reservoir operational function was modified in the 1970's to also meet public-supply water needs at the Río Blanco Filtration Plant (Puerto Rico Electric Power Authority (PREPA), written communication, March 2005). The Lago Icacos dam is a concrete-gravity structure 25.98 ft (7.92 m) high, 155 ft (47.24 m) long, with a spillway section of 90 ft (27.43 m) long. The spillway has an elevation of 1,860.01 ft (566.93 m) above mean sea level (Puerto Rico Electric Power Authority (PREPA), written communication, March 2005). The Lago Icacos Dam impounds the waters of the Ri'o Icacos, and has a surface area of 0.00138 mi² (0.0036 km2) at the spillway elevation. New capacity table based on US Geological Survey Water-Resources Investigation Report 07-5033, March 2004.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation 1,899.87 ft (579.08 m), January 24, 2007; minimum elevation, 1,817.43 ft (553.95 m), September 22, 2006.