Blackfoot Detention Dam

MIZPAH CK./POWDER RIVER· Carter, Montana· Built 1959· Gravity·
Low Hazard Fire Protection Stock Or Small Fish Pond Federal Government

Key Takeaway

Blackfoot Detention Dam is classified as low hazard in Montana. It was completed in 1959 and is 67 years old. Its primary use is fire protection.

Physical Details

Dam Length3,600 ft
Dam TypeGravity
Max Storage707 acre-ft
Normal Storage0 acre-ft
Surface Area88 acres
Year Completed1959 (67 years old)
NID IDMT00611

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
Last Inspection: August 30, 2010
State Regulated: No

Ownership

DOI BLM

Federal Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Blackfoot Detention Dam?

Blackfoot Detention 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 Blackfoot Detention Dam?

Blackfoot Detention Dam is owned by DOI BLM (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Blackfoot Detention Dam built?

Blackfoot Detention Dam was completed in 1959, making it 67 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 Blackfoot Detention Dam?

Blackfoot Detention Dam 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.

When was Blackfoot Detention Dam last inspected?

Blackfoot Detention Dam was last inspected on August 30, 2010. Inspection dates indicate when a formal review occurred, not the results of that inspection.

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.