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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.
USGS Water-Year Summary 2024
50124200 RIO GUAYANILLA NEAR GUAYANILLA, PR
LOCATION - Lat 18°02'39.26", long 66°47'53.39" referenced to North American Datum of 1927, Penuelas Municipio, PR, Hydrologic Unit 21010004, on left bank, 0.7 mi (1.1 km) north of junction of Highway 2 and State Road 132, 0.6 mi (1 km) downstream from Quebrada Consejo, and 1.8 mi (2.9 km) north-northwest from Guayanilla plaza.
DRAINAGE AREA - 18.9 mi². (49 km2).
REVISIONS HISTORY - Revisions: Peak gage height and discharge for the 2013 water year were revised on Nov. 5, 2019, based on a high water mark surveyed on Oct. 30, 2012.
SURFACE-WATER RECORDS
PERIOD OF RECORD - March 1, 1981 to current year.
GAGE - Water-stage recorder, crest-stage gage, and satellite telemetry at station. Datum of gage is 59.2 ft. (18.0 m) above Puerto Rico Vertical Datum of 2002 (PRVD02). Elevation or datum of gage was previously reported as 80 ft. (24 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 datum did not meet the new accuracy requirements.
WATER-QUALITY RECORDS
PERIOD OF RECORD - April 14, 1981 to January 14, 1982; discontinued.
