Located north of Ponce in Puerto Rico, Lago Cerrillos is a reservoir formed by the Cerrillos Dam on the Rio Cerrillos. Built in 1991 as part of the Río Portugués and Bucaná Project, it serves multiple purposes:

Flood protection: The dam helps regulate river flow, mitigating potential flooding in the surrounding areas.

Water supply: Lago Cerrillos provides a crucial source of freshwater for the city of Ponce and nearby municipalities.

Recreation: The surrounding area offers opportunities for hiking, birdwatching, and relaxation. However, swimming and boating are not recommended due to safety concerns.