One arm of the lovely Dos Bocas Lake, near Utuado. Good fly fishing for Peacock Bass and Largemouth Bass. Also stocked with catfish & sunfish. Free ferry rides are offered by the municipal government. Restaurants and a nice place to stay in called 'Hacienda Casa Grande' nearby, but a ways around. This is the karst area, near the Camuy Caves. No fresh standing body of water in the tropics is safe to swim in due to Bhilarzia ( schistosomiasis, a liver fluke). Swimming is only safe in the upper reaches of the mountains.