Comerio Ii Dam dam
Comerio Ii Dam
The Comerio II Dam, located in Comerío, Puerto Rico, is a hydroelectric structure built in 1913 with a primary purpose of generating electricity. Standing at 128 feet tall and spanning 480 feet in length, this buttress dam harnesses the power of the La Plata River to provide a maximum storage capacity of 1825 acre-feet. Despite its impressive engineering, the dam's condition assessment is rated as poor, with a high hazard potential due to its outdated design and maintenance issues.
Managed by the Puerto Rico Electric Power Authority (PREPA), the dam is inspected every three years to ensure structural integrity and public safety. With a moderate risk assessment score of 3 on a scale of 1 to 5, the Comerio II Dam faces challenges in meeting modern safety guidelines and emergency preparedness standards. While it continues to serve as a vital source of renewable energy for the region, efforts to improve its condition and reduce potential risks are necessary to safeguard the surrounding communities and water resources.
As a key component of Puerto Rico's water infrastructure, the Comerio II Dam offers valuable insights into the intersection of water resource management and climate resilience. Its historical significance and ongoing operational challenges highlight the importance of balancing energy production with environmental conservation and safety considerations. By addressing the dam's maintenance needs and implementing risk management measures, stakeholders can ensure the long-term sustainability of this critical hydroelectric facility in the face of evolving climate conditions and water resource demands.
Dam data reference
Condition Assessment
- Satisfactory
- No 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.
- 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.
- 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.
Hazard Potential Classification
- High
- Dams 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, environmental 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.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Comerio Ii Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Rio Guadiana Nr Guadiana | 10 cfs | → |
| Rio De La Plata At Comerio | 70 cfs | → |
| Rio De La Plata Blw La Plata Damsite | 0 cfs | → |
| Rio De Bayamon Blw Lago Cidra | 7 cfs | → |
| Rio De Bayamon Nr Bayamon | 10 cfs | → |
| Rio De Bayamon At Arenas | 0 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Comerio Ii Dam.
More reservoirs
Track Comerio Ii Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Comerio Ii Dam
Where does the data for Comerio Ii Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Comerio Ii Dam.