Hardisty

CHERRY CREEK DOUGHERTY CREEK· Owyhee, Idaho· Built 1914· 31 ft tall
Significant Hazard Other Private

Key Takeaway

Hardisty is classified as significant hazard in Idaho. It was completed in 1914 and is 112 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 31 ft (taller than 58.6% in ID)
Dam Length220 ft
Normal Storage789 acre-ft
Surface Area75 acres
Drainage Area2 sq mi
Max Discharge550 cfs
Year Completed1914 (112 years old)
Year Modified1957
NID IDID00089

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: No
Last Inspection: July 15, 2020
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Nearby Dams

Foland

Owyhee, ID

Low Hazard 11 ft

Hardisty Wilson West

Owyhee, ID

Low Hazard 18 ft

Juniper Creek

Owyhee, ID

Low Hazard 16 ft

Hardisty Wilson East

Owyhee, ID

Low Hazard 9 ft

Stimmel Reservoir

Malheur, OR

Low Hazard 17 ft

Salt Lick Reservoir

Malheur, OR

Low Hazard 23 ft

Arritola Reservoir

Malheur, OR

Low Hazard 18 ft

Castro Reservoir

Malheur, OR

Low Hazard

Frequently Asked Questions

What is the hazard classification of Hardisty?

Hardisty 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 Hardisty?

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

When was Hardisty built?

Hardisty was completed in 1914, making it 112 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 Hardisty?

Hardisty 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 Hardisty?

Hardisty has a dam height of 31 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 Hardisty last inspected?

Hardisty was last inspected on July 15, 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.