USGS Water-Year Summary 2021
50113800 RIO CERRILLOS ABOVE LAGO CERRILLOS NEAR PONCE, PR
LOCATION - Lat 18°07'00.43", long 66°36'17.60" referenced to North American Datum of 1927, Ponce Municipio, PR, Hydrologic Unit 21010004, on right bank, 0.3 mi (0.5 km) downstream from confluence with Río San Patricio, 0.1 mi (0.2 km) southwest of State Road 139 and 2.4 mi (3.7 km) northwest of Hacienda Maragüez.
DRAINAGE AREA - 11.9 mi². (30.8 km2).
Peak gage height and discharge removed in 1989 water year due to incomplete year of data collection.
PERIOD OF RECORD - December 1988 to current year.
GAGE - Water-stage recorder, crest-stage gage, and satellite telemetry at station. Elevation of gage is 720 ft (219 m) above National Geodetic Vertical Datum (NGVD) of 1929, from topographic map. Prior to September, 1998 at datum 2.0 ft lower.
PERIOD OF RECORD - October 2016 to current year.
INSTRUMENTATION - Tipping bucket precipitation gage and data collection platform – 15 minutes interval.
PERIOD OF RECORD - Water year 2013 to current year.