Puerto Rico Dams
36 dams tracked by the National Inventory of Dams
Total Dams
36
High Hazard
36
100%
Poor / Unsatisfactory
12
Average Age
74 yrs
Hazard Classification
High36 (100.0%)
Significant0 (0.0%)
Low0 (0.0%)
Condition Assessment
Satisfactory24 (66.7%)
Fair0 (0.0%)
Poor / Unsatisfactory12 (33.3%)
Not Rated0 (0.0%)
Federal
0
State
8
Local
3
Private
3
Tallest Dams
- Cerrillos Dam323 ft
- Caonillas Dam235 ft
- Portugues Dam220 ft
- Toa Vaca Dam215 ft
- Garzas Dam201 ft
High Hazard Dams
- Cerrillos DamHigh
- Caonillas DamHigh
- Portugues DamHigh
- Toa Vaca DamHigh
- Garzas DamHigh
Poor Condition Dams
- Garzas DamUnsatisfactory
- Guayo DamPoor
- Guayabal DamPoor
- Comerio Ii DamPoor
- Patillas DamPoor
All Dams in Puerto Rico
Showing 1–24 of 24
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Yahuecas Dam Adjuntas County | 90 | 1956 | High | Satisfactory |
| Vivi Dam Utuado County | 85 | 1950 | High | Satisfactory |
| Toa Vaca Dam Villalba County | 215 | 1972 | High | Satisfactory |
| Rio  Blanco Dam Naguabo County | 64 | 2009 | High | Satisfactory |
| Prieto Dam Maricao County | 98 | 1955 | High | Satisfactory |
| Portugues Dam Ponce County | 220 | 2015 | High | Satisfactory |
| Poncenaâ Dam Juana Díaz County | 48 | 1939 | High | Satisfactory |
| Pellejas Dam Adjuntas County | 50 | 1950 | High | Satisfactory |
| Melania Dam Guayama County | 30 | 1914 | High | Satisfactory |
| Lucchetti Dam Yauco County | 169 | 1952 | High | Satisfactory |
| Loiza Dam Trujillo Alto County | 95 | 1954 | High | Satisfactory |
| Loco Dam Yauco County | 74 | 1951 | High | Satisfactory |
| Las Curias Dam San Juan County | 75 | 1946 | High | Satisfactory |
| La Plata Dam Toa Alta County | 131 | 1974 | High | Satisfactory |
| Lago Regulador Isabela County | 40 | 1996 | High | Satisfactory |
| Fajardo Dam Fajardo County | 115 | 2002 | High | Satisfactory |
| Dos Bocas Dam Arecibo County | 188 | 1942 | High | Satisfactory |
| Coamo Dam Santa Isabel County | 65 | 1914 | High | Satisfactory |
| Cidra Dam Cidra County | 115 | 1946 | High | Satisfactory |
| Cerrillos Dam Ponce County | 323 | 1992 | High | Satisfactory |
| Caonillas Dam Jayuya County | 235 | 1948 | High | Satisfactory |
| Ana Mariaâ V Dam Ponce County | 53 | 1939 | High | Satisfactory |
| Ana Mariaâ Ii Dam Ponce County | 40 | 1939 | High | Satisfactory |
| Adjuntas Dam Adjuntas County | 80 | 1950 | High | Satisfactory |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.