Jupiter

DIFFUSED SURFACE WATER· Hill, Montana· Built 1819· Earth· 10 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Jupiter is classified as low hazard in Montana. It was completed in 1819 and is 207 years old. Its primary use is fire protection.

Physical Details

Dam Height 10 ft (taller than 3.7% in MT)
Dam Length140 ft
Dam TypeEarth
Max Storage147 acre-ft
Normal Storage32 acre-ft
Year Completed1819 (207 years old)
NID IDMT03441

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

RICHARD D VELK

Private

Nearby Dams

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U N Reservoir

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Cool Cotton

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Couch Coulee #2

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Low Hazard 20 ft

Sigurd

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Low Hazard 14 ft

Couch Coulee #1

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Low Hazard 16 ft

Rusty Bandalero

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Low Hazard 8 ft

Couch Coulee #3

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Low Hazard 15 ft

Frequently Asked Questions

What is the hazard classification of Jupiter?

Jupiter 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 Jupiter?

Jupiter is owned by RICHARD D VELK (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Jupiter built?

Jupiter was completed in 1819, making it 207 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 Jupiter?

Jupiter serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Jupiter?

Jupiter has a dam height of 10 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.