Foster

WORM CREEK CUB RIVER· Franklin, Idaho· Built 1962· 70 ft tall
High Hazard Irrigation Private

Key Takeaway

Foster is classified as high hazard in Idaho. It was completed in 1962 and is 64 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 70 ft (taller than 86.9% in ID)
Dam Length1,300 ft
Normal Storage3.0K acre-ft
Surface Area145 acres
Drainage Area1 sq mi
Max Discharge0 cfs
Year Completed1962 (64 years old)
Year Modified2009
NID IDID00079

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: July 13, 2018
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Nearby Dams

Glendale

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Lamont

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Johnson

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Significant Hazard 28 ft

Winder

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Condie

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Significant Hazard 41 ft

Strong Arm No 2 (Lower)

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Significant Hazard 27 ft

Strong Arm No 1 (Upper)

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High Hazard 39 ft

Van Orden

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Low Hazard 23 ft

Frequently Asked Questions

What is the hazard classification of Foster?

Foster 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 Foster?

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

When was Foster built?

Foster was completed in 1962, making it 64 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 Foster?

Foster 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 Foster?

Foster has a dam height of 70 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 Foster last inspected?

Foster was last inspected on July 13, 2018. 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.