Monticello Lake

SPRING CREEK--OFFSTREAM· San Juan, Utah· Built 1954· Earth·
Significant Hazard Recreation State Government

Key Takeaway

Monticello Lake is classified as significant hazard in Utah. It was completed in 1954 and is 72 years old. Its primary use is recreation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Length327 ft
Dam TypeEarth
Max Storage62 acre-ft
Normal Storage27 acre-ft
Drainage Area0 sq mi
Year Completed1954 (72 years old)
NID IDUT00218

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: Yes
Last Inspection: September 26, 2023
State Regulated: Yes
Regulatory Agency: Utah Division of Water Rights

Ownership

DIVISION OF WILDLIFE RESOURCES

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Monticello Lake?

Monticello Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Monticello Lake?

Monticello Lake is owned by DIVISION OF WILDLIFE RESOURCES (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Monticello Lake built?

Monticello Lake was completed in 1954, making it 72 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 Monticello Lake?

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

When was Monticello Lake last inspected?

Monticello Lake was last inspected on September 26, 2023. 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.