Greaser Lake Reservoir

TWENTY MILE CREEK· Lake, Oregon· Built 1963· Earth· 10 ft tall
Low Hazard Irrigation Private

Key Takeaway

Greaser Lake Reservoir is classified as low hazard in Oregon. It was completed in 1963 and is 63 years old. Its primary use is irrigation.

Physical Details

Dam Height 10 ft (taller than 0.6% in OR)
Dam Length505 ft
Dam TypeEarth
Max Storage20.0K acre-ft
Normal Storage12.0K acre-ft
Surface Area4,000 acres
Drainage Area270 sq mi
Max Discharge1,440 cfs
Year Completed1963 (63 years old)
NID IDOR00277

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 28, 2015
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

WARNER VALLEY STOCK COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Greaser Lake Reservoir?

Greaser Lake 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 Greaser Lake Reservoir?

Greaser Lake Reservoir is owned by WARNER VALLEY STOCK COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Greaser Lake Reservoir built?

Greaser Lake Reservoir was completed in 1963, making it 63 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 Greaser Lake Reservoir?

Greaser Lake 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 Greaser Lake Reservoir?

Greaser Lake Reservoir 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.

When was Greaser Lake Reservoir last inspected?

Greaser Lake Reservoir was last inspected on October 28, 2015. 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.