Lake Leone Dam is a buttress dam located in Aleutians West Census Area, Alaska, built in 1945. It carries a Significant hazard potential classification.

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.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

Data note: Hazard potential describes the consequences if a dam failed; it does not predict the likelihood of failure. Inspection, condition, and emergency-plan fields can be incomplete or delayed. Check state dam-safety officials and local emergency managers for official guidance.
Significant HazardNot Rated ConditionEmergency Action Plan: No

Location

StateAlaska
CountyAleutians West Census Area
Nearest CityAdak Naval Base
Coordinates51.84485, -176.64180

Physical Characteristics

Dam TypeButtress
NID Height9 ft
Dam Length24 ft
Year Completed1945 (81 years old)

Storage & Hydraulics

NID Storage1,690 acre-ft
Max Storage1,690 acre-ft
Normal Storage1,545 acre-ft
Max Discharge400 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeWater Supply
OwnerALEUT CORPORATION
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection11/09/2011
Emergency Action PlanNo

Identifiers

NID IDAK00109
Federal IDAK00109
More InfoState Dam Safety Program