Summary
Built in 1927 by the Puerto Rico Electric Power Authority, this earth dam stands at a height of 120 feet and serves multiple purposes, including hydroelectric power generation, irrigation, and water supply. With a storage capacity of 49,200 acre-feet and a maximum discharge of 34,600 cubic feet per second, the dam plays a crucial role in water resource management in the region.
Despite its importance, Guajataca Dam is facing challenges in terms of its structural integrity and hazard potential. The dam has been classified as having a high hazard potential and poor condition assessment, indicating the need for significant maintenance and repair work. The last inspection conducted in October 2019 highlighted the dam's poor condition, emphasizing the urgency of addressing these issues to ensure the safety of surrounding communities and the continued functionality of the dam.
While the risk assessment for Guajataca Dam is moderate, with a DSAC assigned date yet to be determined, it is evident that proactive risk management measures need to be implemented to safeguard the dam and the people living downstream. As a key water resource infrastructure in Puerto Rico, Guajataca Dam plays a crucial role in meeting the region's water needs and supporting sustainable development. It is essential for stakeholders to prioritize the maintenance and rehabilitation of the dam to mitigate potential risks and ensure the long-term reliability of this critical infrastructure.
Year Completed |
1927 |
Dam Length |
984 |
Dam Height |
120 |
River Or Stream |
GUAJATACA RIVER |
Primary Dam Type |
Earth |
Surface Area |
1000 |
Hydraulic Height |
116 |
Drainage Area |
30.08 |
Nid Storage |
49200 |
Structural Height |
120 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
120 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Canal Diversion Lago Guajataca
|
65cfs |
Rio Guajataca Blw Lago Guajataca
|
6cfs |
Rio Camuy Nr Bayaney
|
86cfs |
Rio Guajataca At Lares
|
1cfs |
Rio Culebrinas At Hwy 404 Nr Moca
|
103cfs |
Rio Tanama Nr Utuado
|
28cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Guajataca Dam