The Prieto Dam, located in Maricao, Puerto Rico, is a vital hydroelectric structure constructed in 1955 by the Puerto Rico Electric Power Authority. This gravity dam on the Prieto River stands at a height of 98 feet and serves multiple purposes including hydroelectric power generation and irrigation for the region. With a storage capacity of 880 acre-feet and a maximum discharge of 32,000 cubic feet per second, the dam plays a crucial role in managing water resources in Lares County.

Managed by PREPA, the Prieto Dam is regulated and inspected regularly to ensure its structural integrity and operational efficiency. Despite being classified as having a high hazard potential, the dam's condition assessment remains satisfactory as of the last inspection in December 2021. With a moderate risk assessment rating, the dam is equipped with an uncontrolled spillway and has no associated locks. The surrounding area benefits from the Prieto Dam's water storage capabilities and hydroelectric power generation, contributing to the sustainable development of the region.

Water resource and climate enthusiasts will appreciate the engineering feat of the Prieto Dam, as it stands as a testament to Puerto Rico's commitment to harnessing renewable energy sources and managing water resources effectively. The dam's strategic location on the Prieto River not only provides irrigation water for agricultural activities but also generates clean hydroelectric power for the surrounding communities. With a focus on safety and risk management measures, the Prieto Dam continues to play a significant role in shaping the water infrastructure of Lares County and contributing to the region's sustainable development efforts.