Lake Demarie Dam is a gravity dam located in Aleutians West Census Area, Alaska, built in 1951. It carries a Significant hazard potential classification.
Dam profile
NID height · 19 ft19 ft tall and 95 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 Lake Demarie Dam
The primary purpose of Lake Demarie Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City of Adak (local government).
The dam stands 19 feet tall and stretches 95 feet across, and has a maximum storage capacity of 2,120 acre-feet. Completed in 1951, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 11/09/2011. That was over 14 years ago.
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Location
| State | Alaska |
| County | Aleutians West Census Area |
| Nearest City | Adak |
| Coordinates | 51.84490, -176.68730 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 19 ft |
| Dam Length | 95 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 2,120 acre-ft |
| Max Storage | 2,120 acre-ft |
| Normal Storage | 1,611 acre-ft |
| Max Discharge | 5,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Adak |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 11/09/2011 |
| Emergency Action Plan | No |
Identifiers
| NID ID | AK00123 |
| Federal ID | AK00123 |
| More Info | State Dam Safety Program |