USGS Water-Year Summary 2023
50083500 RIO GUAYANES AT YABUCOA, PR
LOCATION - Lat 18°03'32", long 65°54'04" referenced to North American Datum of 1927, Yabucoa Municipio, PR, Hydrologic Unit 21010005, 1.5 mi (2.45 km) south from Segunda Unidad School at Martorell in Limones, 3.3 mi (5.31 km) north of Maunabo Church, and 1.5 mi (2.41 km) west-southwest from Central Roig.
DRAINAGE AREA - 16.4 mi². (42.0 km2).
REVISIONS HISTORY -
Revisions: The maximum discharge for water years 2011-2013, 2016 were revised on Dec. 2, 2019, based on a rating developed after these peaks.
Drainage area revised in 2021 based on ArcHydro 2020, more detailed topo used.
SURFACE-WATER RECORDS
PERIOD OF RECORD - February 12, 1969 to December 31, 1971, June 1, 2002 to current year.
GAGE - Water-stage recorder, satellite telemetry at station. Datum of gage is 40.15 ft. (12.24 m) above Puerto Rico Vertical Datum of 2002 (PRVD02). Prior to June 2002 station at different datum. Elevation or datum of gage was previously reported as 50 ft. (15.2 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 datum did not meet the new accuracy requirements.
WATER-QUALITY RECORDS
PERIOD OF RECORD - April 2, 1958 to March 4, 1963, December 18, 1968 to May 31, 1972, December 4, 1979 to August 15, 2012; discontinued.