Sheridan

EAST FORK BIG LOST RIVER BIG LOST RIVER· Clark, Idaho· Built 1873· 22 ft tall
Significant Hazard Other Private

Key Takeaway

Sheridan is classified as significant hazard in Idaho. It was completed in 1873 and is 153 years old. Its primary use is other. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 22 ft (taller than 34.7% in ID)
Dam Length2,340 ft
Normal Storage2.1K acre-ft
Surface Area286 acres
Drainage Area7 sq mi
Max Discharge0 cfs
Year Completed1873 (153 years old)
NID IDID00177

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: August 14, 2018
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Frequently Asked Questions

What is the hazard classification of Sheridan?

Sheridan 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 Sheridan?

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

When was Sheridan built?

Sheridan was completed in 1873, making it 153 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 Sheridan?

Sheridan 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 Sheridan?

Sheridan has a dam height of 22 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 Sheridan last inspected?

Sheridan was last inspected on August 14, 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.