Rex

LOST CREEK - OFFSTREAM· Sevier, Utah· Built 1948· Earth·
Significant Hazard Irrigation Private

Key Takeaway

Rex is classified as significant hazard in Utah. It was completed in 1948 and is 78 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Length390 ft
Dam TypeEarth
Max Storage1.1K acre-ft
Normal Storage975 acre-ft
Drainage Area5 sq mi
Year Completed1948 (78 years old)
NID IDUT00257

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: August 30, 2023
State Regulated: Yes
Regulatory Agency: Utah Division of Water Rights

Ownership

LOST CREEK IRRIGATION COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Rex?

Rex 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 Rex?

Rex is owned by LOST CREEK IRRIGATION COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Rex built?

Rex was completed in 1948, making it 78 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 Rex?

Rex 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 Rex last inspected?

Rex was last inspected on August 30, 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.