Enl. George H. Marshall

YOGA DRAW· Johnson, Wyoming· Built 2007· Earth· 37 ft tall
Low Hazard Irrigation Other Private

Key Takeaway

Enl. George H. Marshall is classified as low hazard in Wyoming. It was completed in 2007 and is 19 years old. Its primary use is irrigation.

Physical Details

Dam Height 37 ft (taller than 83.1% in WY)
Dam Length220 ft
Dam TypeEarth
Max Storage95 acre-ft
Normal Storage64 acre-ft
Surface Area7 acres
Drainage Area0 sq mi
Max Discharge464 cfs
Year Completed2007 (19 years old)
NID IDWY02399

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 20, 2023
State Regulated: Yes
Regulatory Agency: SEO

Ownership

CARBON CREEK ENERGY, LLC

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Enl. George H. Marshall?

Enl. George H. Marshall 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 Enl. George H. Marshall?

Enl. George H. Marshall is owned by CARBON CREEK ENERGY, LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Enl. George H. Marshall built?

Enl. George H. Marshall was completed in 2007, making it 19 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 Enl. George H. Marshall?

Enl. George H. Marshall serves the following purposes: Irrigation, Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Enl. George H. Marshall?

Enl. George H. Marshall has a dam height of 37 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 Enl. George H. Marshall last inspected?

Enl. George H. Marshall was last inspected on June 20, 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.