Lake Leone Dam is a buttress dam located in Aleutians West Census Area, Alaska, built in 1945. It carries a Significant hazard potential classification.
Dam profile
NID height · 9 ft9 ft tall and 24 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 Leone Dam
The primary purpose of Lake Leone 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 Aleut Corporation (private).
The dam stands 9 feet tall and stretches 24 feet across, and has a maximum storage capacity of 1,690 acre-feet. Completed in 1945, the structure is well-established, with more than 75 years of service.
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 Naval Base |
| Coordinates | 51.84485, -176.64180 |
Physical Characteristics
| Dam Type | Buttress |
| NID Height | 9 ft |
| Dam Length | 24 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 1,690 acre-ft |
| Max Storage | 1,690 acre-ft |
| Normal Storage | 1,545 acre-ft |
| Max Discharge | 400 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Aleut Corporation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 11/09/2011 |
| Emergency Action Plan | No |
Identifiers
| NID ID | AK00109 |
| Federal ID | AK00109 |
| More Info | State Dam Safety Program |