Encino Detention Dam No. 40 is a gravity dam located in Sandoval County, New Mexico, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 2,194 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Encino Detention Dam No. 40
The primary purpose of Encino Detention Dam No. 40 is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Doi BLM (federal). It impounds the San Ysidro Offstr.
The dam stands 10 feet tall and stretches 2,194 feet across, creates a reservoir covering 68 acres, and has a maximum storage capacity of 129 acre-feet. Completed in 1965, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 10/14/2020.
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Location
| State | New Mexico |
| County | Sandoval |
| River/Stream | San Ysidro Offstr |
| Coordinates | 35.94816, -107.13496 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 10 ft |
| Dam Length | 2,194 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 129 acre-ft |
| Max Storage | 129 acre-ft |
| Surface Area | 68 acres |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/14/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NM00035 |
| Federal ID | NM00035 |
| More Info | State Dam Safety Program |