Iron Mountain

SOUTH SYBILLE CREEK· Albany, Wyoming· Built 1910· Earth· 35 ft tall
Low Hazard Irrigation Private

Key Takeaway

Iron Mountain is classified as low hazard in Wyoming. It was completed in 1910 and is 116 years old. Its primary use is irrigation.

Physical Details

Dam Height 35 ft (taller than 78.8% in WY)
Dam Length270 ft
Dam TypeEarth
Max Storage242 acre-ft
Normal Storage168 acre-ft
Surface Area7 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1910 (116 years old)
Year Modified2002
NID IDWY00032

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 15, 2023
State Regulated: Yes
Regulatory Agency: SEO

Ownership

DON & TAMARA WILLIS

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Iron Mountain?

Iron Mountain 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 Iron Mountain?

Iron Mountain is owned by DON & TAMARA WILLIS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Iron Mountain built?

Iron Mountain was completed in 1910, making it 116 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 Iron Mountain?

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

How tall is Iron Mountain?

Iron Mountain has a dam height of 35 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 Iron Mountain last inspected?

Iron Mountain was last inspected on June 15, 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.