Ajies Dam Structure 2a dam
Ajies Dam Structure 2a
Ajies Dam Structure 2a, also known as Ajies Lake, is a state-owned earth dam located in Añasco, Puerto Rico. Designed by USDA NRCS and completed in 1984, this dam serves the primary purpose of flood risk reduction along Ajies Creek. With a height of 52 feet and a hydraulic height of 46.6 feet, it has a capacity of 95 acre-feet and a surface area of 83.2 acres.
Despite its important role in mitigating flood risks, Ajies Dam Structure 2a has been assessed as being in poor condition with a high hazard potential. The dam's spillway, with a width of 70 feet, is uncontrolled, and the last inspection conducted in April 2021 indicated the need for improvement. With a moderate risk rating, there is a pressing need for risk management measures to be implemented to ensure the safety and effectiveness of this critical infrastructure.
Given the dam's location in a high-risk area and its significance for flood control, it is imperative that the relevant state regulatory agencies, such as PREPA, prioritize regular inspections, maintenance, and any necessary repairs to enhance its resilience against potential hazards. Climate enthusiasts and water resource experts should closely monitor the condition and management of Ajies Dam Structure 2a to safeguard the surrounding community and ecosystem from the impacts of extreme weather events and climate change.
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 Ajies Dam Structure 2a -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Rio Culebrinas At Hwy 404 Nr Moca | 184 cfs | → |
| Rio Culebrinas At Margarita Damsite Nr Aguada | 1,640 cfs | → |
| Rio Grande De Anasco Nr San Sebastian | 184 cfs | → |
| Rio Rosario Nr Hormigueros | 30 cfs | → |
| Rio Guanajibo Nr Hormigueros | 90 cfs | → |
| Rio Guajataca Blw Lago Guajataca | 6 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Ajies Dam Structure 2a.
Track Ajies Dam Structure 2a 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 Ajies Dam Structure 2a
Where does the data for Ajies Dam Structure 2a 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 Ajies Dam Structure 2a.