Lost Lake - Uc

LOST CREEK, UPPER PROVO RIVER· Summit, Utah· Built 1931· Earth·

High Hazard Irrigation Federal Government

Key Takeaway

Lost Lake - Uc is classified as high hazard in Utah. It was completed in 1931 and is 95 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Length	930 ft
Dam Type	Earth
Max Storage	1.7K acre-ft
Normal Storage	1.2K acre-ft

Drainage Area	3 sq mi
Max Discharge	127 cfs
Year Completed	1931 (95 years old)
NID ID	UT00184

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes

Last Inspection: July 14, 2020

State Regulated: No

Ownership

RECLAMATION

Federal Government

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Frequently Asked Questions

What is the hazard classification of Lost Lake - Uc?

Lost Lake - Uc is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Lost Lake - Uc?

Lost Lake - Uc is owned by RECLAMATION (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Lost Lake - Uc built?

Lost Lake - Uc was completed in 1931, making it 95 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Lost Lake - Uc?

Lost Lake - Uc serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Lost Lake - Uc last inspected?

Lost Lake - Uc was last inspected on July 14, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.