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Water-Year Summary for Site 50138000

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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)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2022: 2021-10-01 to 2022-09-30
 
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USGS Water-Year Summary 2022
50138000 RIO GUANAJIBO NEAR HORMIGUEROS, PR
LOCATION - Lat 18°08'33.65", long 67°08'55.50" referenced to North American Datum of 1927, Hormigueros Municipio, PR, Hydrologic Unit 21010003, at bridge on State Road 100, 1.4 mi (2.3 km) west of Hormigueros, and 2 mi (3.2 km) downstream from Río Rosario.
DRAINAGE AREA - 120 mi². (311 km2).
REVISIONS HISTORY - 2011 water year peak gage height and discharge updated. Gage height and discharge for the period Oct. 1, 2016 to Nov. 28, 2017, was revised on May 18, 2020, based on changes found in reference gage from levels.
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 14, 1959; annual low-flow measurements, April 1959 to November 1967; monthly measurements. January 1, 1973 to current year.
GAGE - Water-stage recorder and satellite telemetry at station. Datum of gage is -0.8 ft. (-0.2 m) above Puerto Rico Vertical Datum of 2002 (PRVD02). Prior to November 7, 1980, at site 0.3 mi (0.5 km) upstream at datum 7.36 ft (2.243 m) higher. Elevation or datum was previously reported as 13 ft. (4.0 m) above mean sea level and NGVD 29 and was established via topographic map and a new GNSS survey was used to establish a PRVD02 datum because the topographic map did not meet the new accuracy requirements.
WATER-QUALITY RECORDS
PERIOD OF RECORD - September 24, 1958 to current year.