USGS Water-Year Summary 2021
50028400 RIO TANAMA AT CHARCO HONDO, PR
LOCATION - Lat 18°24'50.75", long 66°42'52.95" referenced to North American Datum of 1927, Arecibo Municipio, PR, Hydrologic Unit 21010002, on right bank at abandoned power house at Charco Hondo, 1.5 mi (2.4 km) upstream from mouth, and 4 mi (6 km) south of Arecibo.
DRAINAGE AREA - 22.2 mi², (57.5 km2).
PERIOD OF RECORD - April 1969 to June 1971, October 1981 to current year.
GAGE - Water-stage recorder and crest-stage gage, satellite telemetry at station. Elevation of gage is 48 ft (14.6 m), above National Geodetic Vertical Datum (NGVD) of 1929, from topographic map.