Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins

Water-Year Summary for Site 50075550

Click to hide Water-Year Summary instructions and information
  • 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
62614 Elevation, lake/res, NGVD29(Obs.)  

Water year 2019: 2019-10-01 to 2020-09-30

Print this page
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.