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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
50021700 RIO GRANDE DE ARECIBO ABOVE UTUADO, PR
LOCATION - Lat 18°14'39.11", long 66°43'20.25" referenced to North American Datum of 1927, Utuado Municipio, PR, Hydrologic Unit 21010002, 0.4 mi (0.6 km) southwest from Segunda Unidad Salto Arriba School, 2.2 mi (3.5 km) southwest from Utuado plaza, 1.1 mi (1.8 km) west from Arenas Abajo School, and 1 mi (1.7 km) northwest from Puente Blanco School.
DRAINAGE AREA - 36 mi². (93.2 km2).
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 1, 1989 to May 31, 1999; monthly measurements and peak flow above 5,000 ft³/s (142 m3/s). June 1, 1999 to current year.
GAGE - Water-stage recorder, satellite telemetry at station. Datum of gage is 515.88 ft. (157.2 m) above Puerto Rico Vertical Datum of 2002 (PRVD02). Elevation or datum of gage was previously reported as 525 ft. (160 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.
REMARKS - Discharges above 500 ft³/s are considered fair. Flow regulated by Lago Adjuntas Dam approximately 5.2 mi (8.37 km) upstream.
WATER-QUALITY RECORDS
PERIOD OF RECORD - December 17, 2001 to October 6, 2004; discontinued.
PERIOD OF DAILY RECORD - SUSPENDED SEDIMENT DISCHARGE: October 1, 2000 to September 30, 2005; discontinued.
