Graham

DILLEY CREEK· Washington, Oregon· Built 1961· Earth· 32 ft tall
Low Hazard Irrigation Private

Key Takeaway

Graham is classified as low hazard in Oregon. It was completed in 1961 and is 65 years old. Its primary use is irrigation.

Physical Details

Dam Height 32 ft (taller than 63.9% in OR)
Dam Length550 ft
Dam TypeEarth
Max Storage220 acre-ft
Normal Storage180 acre-ft
Surface Area15 acres
Drainage Area1 sq mi
Max Discharge82 cfs
Year Completed1961 (65 years old)
NID IDOR00440

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: November 10, 2016
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

J.G. STEVENS

Private

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Cook Reservoir (Wash)

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Hochstein Dam #3

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Unger-Bill Dam

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Walters, Glenn #1 - Large

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Pierson-Upper

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Frequently Asked Questions

What is the hazard classification of Graham?

Graham 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 Graham?

Graham is owned by J.G. STEVENS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Graham built?

Graham was completed in 1961, making it 65 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 Graham?

Graham 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 Graham?

Graham has a dam height of 32 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 Graham last inspected?

Graham was last inspected on November 10, 2016. 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.