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Water-Year Summary for Site 50093045

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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 2022: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2022
LOCATION - Lat 18°01'11", long 66°01'08" referenced to North American Datum of 1927, Patillas Municipio, PR, Hydrologic Unit 21010004, on left side of concrete spillway in a galvanized shelter, 0.84 mi (1.34 km) northwest from Patillas plaza, 0.57 mi (0.92 km) northwest from Segunda Unidad de Real School, and 2.56 mi (4.10 km) east from Segunda Unidad de Jesús María Rodríguez School.
DRAINAGE AREA - 25.6 mi². (66.3 km2).
REVISIONS HISTORY - Maximum elevation was revised on April 13, 2018, due to an error found in the manuscript that same year.
PERIOD OF RECORD - March 1995 to current year.
GAGE - Water-stage recorder, satellite, tipping bucket rain gage and radio telemetry at station. Elevation of gage is above National Geodetic Vertical Datum (NGVD) of 1929, feet.
REMARKS - Lago Patillas was completed in 1914. The dam is a semi-hydraulic earthfill structure about 147 ft (45 m) height, a top width of 15 ft (4.6 m), maximum pool elevation of 230 ft (70.1 m), a base width of 625 ft (190 m), a crest length of 1,067 ft (325 m) and has maximum pool storage of 17,073 acre-ft (21.05 hm3). The Lago Patillas Dam primary purpose is for irrigation of lands served by the Patillas Irrigation canal.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 225.49 ft (68.73 m) September 21, 1998; minimum elevation, 203.43 ft (62.0 m), August 28 2015.
PERIOD OF RECORD - October 2016 to current year.
INSTRUMENTATION - Tipping bucket precipitation gage and data collection platform – 15 minutes interval.