LOIZA RIVER

Spanish Ro Grande De Loza, river in eastern Puerto Rico, rising in the Sierra de Cayey south of San Lorenzo. Flowing about 40 miles (65 km) between the humid foothills of the Cayey and the Sierra de Luquillo, it emerges through swamps to empty into the Atlantic Ocean near Loza Aldea. In its floodplain and on the surrounding terraces, sugarcane, tobacco, bananas, and vegetables are grown. In 1948 the Loza River Project was initiated with the construction of a hydroelectric dam just south of Trujillo Alto. Its reservoir, Embalse de Loza, is the major source of San Juan's water supply. The last 8 miles (13 km) of the river from Santa Brbara have been straightened and made navigable.