Cidra Dam, also known as Lago Cidra, is a gravity dam located on the Bayamon River in Cidra, Puerto Rico. Constructed in 1946 by renowned designer Malcolm Pirnie, the dam serves the primary purpose of water supply for the region. With a height of 115 feet and a hydraulic height of 108 feet, the dam boasts a capacity of 10,800 acre-feet and a surface area of 268 acres, providing essential water resources for the area.

The dam's spillway, which is uncontrolled and 131 feet wide, ensures the safe discharge of water during periods of excess flow. Despite its high hazard potential, the dam's condition is assessed as satisfactory, with regular inspections ensuring its structural integrity. The risk assessment for Cidra Dam is moderate, indicating a proactive approach to risk management and emergency preparedness. With state regulation and enforcement in place, the dam remains a vital asset for water supply and climate resilience in Puerto Rico.

Overall, Cidra Dam stands as a critical infrastructure asset in the region, providing essential water resources and contributing to climate resilience efforts. With its impressive design and capacity, the dam plays a crucial role in water supply management and flood control on the Bayamon River. As a publicly owned utility, the dam's operation and maintenance are overseen by state regulatory agencies, ensuring its continued safety and functionality for the community it serves.