Greely Dam

TRIB ROCK CREEK· Malheur, Oregon· Built 2004· Gravity·
Low Hazard Flood Risk Reduction Federal Government

Key Takeaway

Greely Dam is classified as low hazard in Oregon. It was completed in 2004 and is 22 years old. Its primary use is flood risk reduction.

Physical Details

Dam Length464 ft
Dam TypeGravity
Max Storage297 acre-ft
Normal Storage0 acre-ft
Surface Area0 acres
Max Discharge5 cfs
Year Completed2004 (22 years old)
NID IDOR00085

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: September 18, 2018
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

DOI BLM

Federal Government

Nearby Dams

Rock Creek Dam

Malheur, OR

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Somerville, The Reservoir

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Antelope

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Arock Diversion Dam

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Hicks Canyon Dam

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Deary Reservoir

Malheur, OR

Low Hazard 27 ft

Parsnip Creek Diversion

Malheur, OR

Significant Hazard 38 ft

Parsnip Creek Reservoir

Malheur, OR

Low Hazard 25 ft

Frequently Asked Questions

What is the hazard classification of Greely Dam?

Greely 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 Greely Dam?

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

When was Greely Dam built?

Greely Dam was completed in 2004, making it 22 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 Greely Dam?

Greely Dam serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Greely Dam last inspected?

Greely Dam was last inspected on September 18, 2018. 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.