Standley Irrigation Dam

TR-TETON RIVER· Teton, Montana· Built 1977· Earth· 15 ft tall
Low Hazard Irrigation Private

Key Takeaway

Standley Irrigation Dam is classified as low hazard in Montana. It was completed in 1977 and is 49 years old. Its primary use is irrigation.

Physical Details

Dam Height 15 ft (taller than 18.8% in MT)
Dam Length100 ft
Dam TypeEarth
Max Storage50 acre-ft
Normal Storage30 acre-ft
Year Completed1977 (49 years old)
NID IDMT03828

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
State Regulated: Yes
Regulatory Agency: DNRC

Ownership

DOUGLAS G. STANDLEY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Standley Irrigation Dam?

Standley Irrigation Dam 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 Standley Irrigation Dam?

Standley Irrigation Dam is owned by DOUGLAS G. STANDLEY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Standley Irrigation Dam built?

Standley Irrigation Dam was completed in 1977, making it 49 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 Standley Irrigation Dam?

Standley Irrigation Dam 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 Standley Irrigation Dam?

Standley Irrigation Dam has a dam height of 15 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.

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.