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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.
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USGS Water-Year Summary 2024
50051800 RIO GRANDE DE LOIZA AT HIGHWAY 183 NEAR SAN LORENZO, PR
LOCATION - Lat 18°11'08.54", long 65°57'41.21" referenced to North American Datum of 1927, San Lorenzo Municipio, PR, Hydrologic Unit 21010005, at downstream side of bridge on State Road 183 by-pass, 0.4 mi (0.6 km) south from San Lorenzo plaza, 1.4 mi (2.2 km), southwest from Rafael Colón García School, and 2 mi (3.2 km) northwest from Segunda Unidad de Carlos Zayas School.
DRAINAGE AREA - 41.09 mi², (64.8 km2).
SURFACE-WATER RECORDS
PERIOD OF RECORD - February 1990 to current year.
GAGE - Water-stage recorder, satellite telemetry at station. Elevation of gage is 263ft (80 m) above National Geodetic Vertical Datum (NGVD) of 1929, from topographic map.
REMARKS - Water purification plant located about 0.20 mi (0.3 km) upstream from gage.
WATER-QUALITY RECORDS
PERIOD OF RECORD - December 12, 1995 to June 7, 2013; discontinued.
REMARKS - Water-Quality Synoptic survey at streams in the Río Grande de Loíza Basin in Water Year 2005. SEDIMENT DATA: February 9, 1990 to September 30, 2002; discontinued.
