Aikman

SOUTH FORK WILLOW CREEK WILLOW CREEK· Gem, Idaho· Built 1999· 77 ft tall
High Hazard Irrigation Private

Key Takeaway

Aikman is classified as high hazard in Idaho. It was completed in 1999 and is 27 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 77 ft (taller than 88.9% in ID)
Dam Length675 ft
Normal Storage2.0K acre-ft
Surface Area72 acres
Drainage Area20 sq mi
Max Discharge825 cfs
Year Completed1999 (27 years old)
Year Modified2006
NID IDID00491

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

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

Emergency Action Plan: Yes
Last Inspection: December 22, 2020
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Nearby Dams

Black Canyon Diversion

Gem, ID

High Hazard 183 ft

Gatfield No 1

Gem, ID

Significant Hazard 16 ft

Gatfield No 2

Gem, ID

Significant Hazard 20 ft

Hidden Springs Cell 3a

Ada, ID

Significant Hazard 43 ft

Haw Creek

Gem, ID

Significant Hazard 27 ft

Horseshoe Bend Diversion

Boise, ID

Low Hazard 8 ft

Stewart Gulch Main Fork

Ada, ID

Significant Hazard 76 ft

Frequently Asked Questions

What is the hazard classification of Aikman?

Aikman is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Aikman?

Aikman is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Aikman built?

Aikman was completed in 1999, making it 27 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 Aikman?

Aikman 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 Aikman?

Aikman has a dam height of 77 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 Aikman last inspected?

Aikman was last inspected on December 22, 2020. 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.