Milton-Freewater Lagoon N-3

UNNAMED TRIB/WALLA WALLA RIVER· Umatilla, Oregon· Built 1988· Earth· 12 ft tall
Low Hazard Other Local Government

Key Takeaway

Milton-Freewater Lagoon N-3 is classified as low hazard in Oregon. It was completed in 1988 and is 38 years old. Its primary use is other.

Physical Details

Dam Height 12 ft (taller than 7.2% in OR)
Dam Length0 ft
Dam TypeEarth
Max Storage161 acre-ft
Normal Storage161 acre-ft
Surface Area14 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed1988 (38 years old)
NID IDOR03724

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: August 26, 2016
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

CITY OF MILTON-FREEWATER

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Milton-Freewater Lagoon N-3?

Milton-Freewater Lagoon N-3 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 Milton-Freewater Lagoon N-3?

Milton-Freewater Lagoon N-3 is owned by CITY OF MILTON-FREEWATER (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Milton-Freewater Lagoon N-3 built?

Milton-Freewater Lagoon N-3 was completed in 1988, making it 38 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 Milton-Freewater Lagoon N-3?

Milton-Freewater Lagoon N-3 serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Milton-Freewater Lagoon N-3?

Milton-Freewater Lagoon N-3 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.

When was Milton-Freewater Lagoon N-3 last inspected?

Milton-Freewater Lagoon N-3 was last inspected on August 26, 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.