Dietz Storage #13

OFFSTREAM· Big Horn, Montana· Built 2006· Earth· 17 ft tall
Low Hazard Other Private

Key Takeaway

Dietz Storage #13 is classified as low hazard in Montana. It was completed in 2006 and is 20 years old. Its primary use is other.

Physical Details

Dam Height 17 ft (taller than 34.9% in MT)
Dam Length3,100 ft
Dam TypeEarth
Max Storage200 acre-ft
Normal Storage158 acre-ft
Surface Area13 acres
Drainage Area0 sq mi
Max Discharge7 cfs
Year Completed2006 (20 years old)
NID IDMT03865

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

PINNACLE GAS RESOURCES

Private

Frequently Asked Questions

What is the hazard classification of Dietz Storage #13?

Dietz Storage #13 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 Dietz Storage #13?

Dietz Storage #13 is owned by PINNACLE GAS RESOURCES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Dietz Storage #13 built?

Dietz Storage #13 was completed in 2006, making it 20 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 Dietz Storage #13?

Dietz Storage #13 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 Dietz Storage #13?

Dietz Storage #13 has a dam height of 17 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.