Moss Flat

UNNAMED TRIB/NORTH FORK COX CREEK· Lake, Oregon· Earth· 11 ft tall
Low Hazard Irrigation Private

Key Takeaway

Moss Flat is classified as low hazard in Oregon. Its primary use is irrigation.

Physical Details

Dam Height 11 ft (taller than 5.4% in OR)
Dam Length0 ft
Dam TypeEarth
Max Storage993 acre-ft
Normal Storage993 acre-ft
Surface Area199 acres
Drainage Area0 sq mi
Max Discharge0 cfs
NID IDOR03729

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 1, 2015
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

COLLINS TIMBER COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Moss Flat?

Moss Flat 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 Moss Flat?

Moss Flat is owned by COLLINS TIMBER COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Moss Flat?

Moss Flat 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 Moss Flat?

Moss Flat has a dam height of 11 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 Moss Flat last inspected?

Moss Flat was last inspected on October 1, 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.