Fourth Creek Reservoir

FOURTH CREEK· Coos, Oregon· Built 1930· Earth· 12 ft tall
Significant Hazard Water Supply Private

Key Takeaway

Fourth Creek Reservoir is classified as significant hazard in Oregon. It was completed in 1930 and is 96 years old. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 12 ft (taller than 7.2% in OR)
Dam Length380 ft
Dam TypeEarth
Max Storage21 acre-ft
Normal Storage21 acre-ft
Surface Area5 acres
Drainage Area1 sq mi
Max Discharge70 cfs
Year Completed1930 (96 years old)
NID IDOR01752

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

DOI BUREAU OF INDIAN AFFAIRS

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Fourth Creek Reservoir?

Fourth Creek Reservoir is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Fourth Creek Reservoir?

Fourth Creek Reservoir is owned by DOI BUREAU OF INDIAN AFFAIRS (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Fourth Creek Reservoir built?

Fourth Creek Reservoir was completed in 1930, making it 96 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 Fourth Creek Reservoir?

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

How tall is Fourth Creek Reservoir?

Fourth Creek Reservoir has a dam height of 12 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.

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.