Blacks Creek

BLACKS CREEK TENMILE CREEK· Ada, Idaho· Built 1915· 52 ft tall
High Hazard Other Private

Key Takeaway

Blacks Creek is classified as high hazard in Idaho. It was completed in 1915 and is 111 years old. Its primary use is other. 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 52 ft (taller than 79.9% in ID)
Dam Length1,700 ft
Normal Storage3.6K acre-ft
Surface Area220 acres
Drainage Area39 sq mi
Max Discharge1,200 cfs
Year Completed1915 (111 years old)
NID IDID00208

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: August 31, 2020
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Blacks Creek?

Blacks Creek 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 Blacks Creek?

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

When was Blacks Creek built?

Blacks Creek was completed in 1915, making it 111 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 Blacks Creek?

Blacks Creek 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 Blacks Creek?

Blacks Creek has a dam height of 52 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 Blacks Creek last inspected?

Blacks Creek was last inspected on August 31, 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.