Pet Rock
Key Takeaway
Pet Rock is classified as low hazard in Montana. It was completed in 1956 and is 70 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 10 ft (taller than 3.7% in MT) |
| Dam Length | 100 ft |
| Dam Type | Earth |
| Max Storage | 54 acre-ft |
| Normal Storage | 18 acre-ft |
| Year Completed | 1956 (70 years old) |
| NID ID | MT03200 |
Safety Information
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?
Ownership
JOHN E LUNDSTROM
Private
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What is the hazard classification of Pet Rock?
Pet Rock 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 Pet Rock?
Pet Rock is owned by JOHN E LUNDSTROM (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Pet Rock built?
Pet Rock was completed in 1956, making it 70 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 Pet Rock?
Pet Rock 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 Pet Rock?
Pet Rock 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.