Andreasen Lower

ROCKY CANYON CREEK COTTONWOOD CREEK· Franklin, Idaho· Built 1960· 33 ft tall
Significant Hazard Irrigation Private

Key Takeaway

Andreasen Lower is classified as significant hazard in Idaho. It was completed in 1960 and is 66 years old. Its primary use is irrigation. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 33 ft (taller than 60.7% in ID)
Dam Length720 ft
Normal Storage100 acre-ft
Surface Area10 acres
Drainage Area1 sq mi
Max Discharge12 cfs
Year Completed1960 (66 years old)
Year Modified2006
NID IDID00157

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 8, 2017
State Regulated: Yes
Regulatory Agency: IDWR

Ownership

Private

Nearby Dams

Andreasen Upper

Franklin, ID

Significant Hazard 29 ft

Oneida Main

Franklin, ID

High Hazard 114 ft

Oneida Dike

Franklin, ID

High Hazard 47 ft

Strong Arm No 1 (Upper)

Franklin, ID

High Hazard 39 ft

Current Creek

Bannock, ID

Significant Hazard 49 ft

Casperson

Franklin, ID

Low Hazard 22 ft

Condie

Franklin, ID

Significant Hazard 41 ft

Strong Arm No 2 (Lower)

Franklin, ID

Significant Hazard 27 ft

Frequently Asked Questions

What is the hazard classification of Andreasen Lower?

Andreasen Lower 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 Andreasen Lower?

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

When was Andreasen Lower built?

Andreasen Lower was completed in 1960, making it 66 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 Andreasen Lower?

Andreasen Lower 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 Andreasen Lower?

Andreasen Lower has a dam height of 33 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 Andreasen Lower last inspected?

Andreasen Lower was last inspected on August 8, 2017. 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.