Lago Adjuntas Lago Garzas Lago Guayo u l e bri n a s dor Lago Prieto Lago Yahuecas R í o P rie to t u n n e l tunne l MOCA SAN SEBASTIAN LARES UTUADO ANASCO LAS MARIAS MAYAGUEZ ADJUNTAS MARICAO SAN GERMAN YAUCO SABANA GRANDE GUAYANILLA 50010500 50020100 5002055 50021 50136400 50141100 50141500 50142500 50143930 50144000 50145395 50999974 66°45' 66°50' 66°55' 67°0' 67°5' 18°15' 18°10' Base from USGS digital data Lambert conformal conic projection. Puerto Rico Datum Map prepared by the US Geological Survey EXPLANATION USGS Surface-water station Lake-stage and rainfall Surface-water and rainfall Rainfall Drainage area boundary Municipal boundary 0 2 4 Kilometers 0 2 4 Miles Drainage area for station 50144000 Río Grande de Añasco Watershed 50144000 - RIO GRANDE DE ANASCO NR SAN SEBASTIAN, PR Drainage area of 97.5 square miles Drainage area excludes 36.6 mi2 upstream from Lago Yahuecas, Lago Guayo and Lago Prieto, the flow of which is diverted Provisional subject to revision