Deep Creek No 1

DEEP CREEK SINKS· Twin Falls, Idaho· Built 1911· 18 ft tall
Low Hazard Other Private

Key Takeaway

Deep Creek No 1 is classified as low hazard in Idaho. It was completed in 1911 and is 115 years old. Its primary use is other.

Physical Details

Dam Height 18 ft (taller than 20.1% in ID)
Dam Length880 ft
Normal Storage88 acre-ft
Surface Area19 acres
Drainage Area81 sq mi
Max Discharge165 cfs
Year Completed1911 (115 years old)
NID IDID00043

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

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

Emergency Action Plan: No
Last Inspection: March 22, 2019
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Deep Creek No 1?

Deep Creek No 1 is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Deep Creek No 1?

Deep Creek No 1 is owned by information not available (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Deep Creek No 1 built?

Deep Creek No 1 was completed in 1911, making it 115 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 Deep Creek No 1?

Deep Creek No 1 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 Deep Creek No 1?

Deep Creek No 1 has a dam height of 18 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 Deep Creek No 1 last inspected?

Deep Creek No 1 was last inspected on March 22, 2019. 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.