Munn Reservoir

MIDDLE FORK BURNT RIVER· Baker, Oregon· Built 1947· Earth· 23 ft tall
Low Hazard Irrigation Private

Key Takeaway

Munn Reservoir is classified as low hazard in Oregon. It was completed in 1947 and is 79 years old. Its primary use is irrigation.

Physical Details

Dam Height 23 ft (taller than 39.8% in OR)
Dam Length572 ft
Dam TypeEarth
Max Storage205 acre-ft
Normal Storage120 acre-ft
Surface Area18 acres
Drainage Area1 sq mi
Max Discharge1,450 cfs
Year Completed1947 (79 years old)
NID IDOR00160

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: October 22, 2020
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

ELDER RANCH INC.

Private

Nearby Dams

Whited Reservoir (Baker)

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Unity

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Morfitt Reservoir

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Low Hazard 20 ft

Elms Reservoir

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Beaverdam Pond

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Low Hazard 10 ft

Camp Creek Reservoir (Baker)

Baker, OR

Significant Hazard 45 ft

Frequently Asked Questions

What is the hazard classification of Munn Reservoir?

Munn Reservoir 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 Munn Reservoir?

Munn Reservoir is owned by ELDER RANCH INC. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Munn Reservoir built?

Munn Reservoir was completed in 1947, making it 79 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 Munn Reservoir?

Munn Reservoir serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Munn Reservoir?

Munn Reservoir has a dam height of 23 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.

When was Munn Reservoir last inspected?

Munn Reservoir was last inspected on October 22, 2020. 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.