Neptune

TR-MUDDY CREEK· Teton, Montana· Built 1920· Earth· 16 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Neptune is classified as low hazard in Montana. It was completed in 1920 and is 106 years old. Its primary use is fire protection.

Physical Details

Dam Height 16 ft (taller than 31.7% in MT)
Dam Length600 ft
Dam TypeEarth
Max Storage67 acre-ft
Normal Storage22 acre-ft
Year Completed1920 (106 years old)
NID IDMT03384

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

DOROTHY A TOECKES

Private

Nearby Dams

Robbie (Teton)

Teton, MT

Low Hazard 8 ft

Cloudy Day

Teton, MT

Low Hazard 20 ft

Woodhouse-Lattin

Teton, MT

Low Hazard 34 ft

Thav

Teton, MT

Low Hazard 15 ft

Muddy Spots

Cascade, MT

Low Hazard 20 ft

Moving'Along

Teton, MT

Low Hazard 38 ft

Neuman #2

Cascade, MT

Low Hazard 25 ft

Neuman Dam

Cascade, MT

Low Hazard 35 ft

Frequently Asked Questions

What is the hazard classification of Neptune?

Neptune 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 Neptune?

Neptune is owned by DOROTHY A TOECKES (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Neptune built?

Neptune was completed in 1920, making it 106 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 Neptune?

Neptune 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 Neptune?

Neptune has a dam height of 16 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.