Encino Detention Dam No. 40 Reservoir Report
Last Updated: December 20, 2025
Encino Detention Dam No.
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Summary
40, located in Sandoval, New Mexico, is a gravity-type dam constructed in 1965 by the Bureau of Land Management for the primary purpose of debris control along the San Ysidro Offstr stream. With a structural height of 10 feet and a hydraulic height of 5 feet, this dam has a storage capacity of 129.7 acre-feet and covers a surface area of 68.4 acres. Although it has a low hazard potential, the dam's condition assessment is currently not rated, and it undergoes inspections every five years to ensure its structural integrity.
Managed and funded by the Bureau of Land Management, Encino Detention Dam No. 40 serves as a vital infrastructure for water resource management in the region. Despite its modest size, the dam plays a crucial role in mitigating debris and controlling the flow of water along the stream. The dam does not have a spillway and is not state-regulated, but it plays a significant role in protecting the surrounding area from potential flooding events.
With its strategic location and design, Encino Detention Dam No. 40 stands as a testament to effective water resource management practices by federal agencies like the Bureau of Land Management. As climate change continues to impact water resources and infrastructure, dams like this play a crucial role in safeguarding communities and ecosystems from the adverse effects of extreme weather events. The regular inspections and maintenance of this dam ensure its continued functionality in protecting the area it serves.
Year Completed |
1965 |
Dam Length |
2194 |
River Or Stream |
SAN YSIDRO OFFSTR |
Primary Dam Type |
Gravity |
Surface Area |
68.4 |
Hydraulic Height |
5 |
Nid Storage |
129.7 |
Structural Height |
10 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Encino Detention Dam No. 40