Chevron Gypsum

JASON DRAW· Sweetwater, Wyoming· Built 1986· Earth· 53 ft tall
Low Hazard Other Private

Key Takeaway

Chevron Gypsum is classified as low hazard in Wyoming. It was completed in 1986 and is 40 years old. Its primary use is other.

Physical Details

Dam Height 53 ft (taller than 94.6% in WY)
Dam Length3,900 ft
Dam TypeEarth
Max Storage0 acre-ft
Normal Storage295 acre-ft
Surface Area35 acres
Drainage Area2 sq mi
Max Discharge0 cfs
Year Completed1986 (40 years old)
NID IDWY01592

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

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

Emergency Action Plan: No
Last Inspection: June 27, 2022
State Regulated: Yes
Regulatory Agency: SEO

Ownership

SIMPLOT PHOSPHATES, LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Chevron Gypsum?

Chevron Gypsum is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Chevron Gypsum?

Chevron Gypsum is owned by SIMPLOT PHOSPHATES, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Chevron Gypsum built?

Chevron Gypsum was completed in 1986, making it 40 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 Chevron Gypsum?

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

How tall is Chevron Gypsum?

Chevron Gypsum has a dam height of 53 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Chevron Gypsum last inspected?

Chevron Gypsum was last inspected on June 27, 2022. 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.