Following is a list of dams and reservoirs in Puerto Rico.
The below list is incomplete. The National Inventory of Dams, maintained by the U.S. Army Corps of Engineers, defines any "major dam" as being 50 feet tall with a storage capacity of at least 5,000 acre-feet, or of any height with a storage capacity of 25,000 acre-feet.
Wikipedia https://en.wikipedia.org/wiki/List_of_dams_and_reservoirs_in_Puerto_Rico
Address Guayabal 00795, United States
Coordinates 18°5'34.992" N -66°30'9.199" E