Utter Dam

Tr-Rosario Strai· San Juan, Washington· Built 1971· Earth·
Low Hazard Recreation Private

Key Takeaway

Utter Dam is classified as low hazard in Washington. It was completed in 1971 and is 55 years old. Its primary use is recreation.

Physical Details

Dam Length335 ft
Dam TypeEarth
Max Storage98 acre-ft
Normal Storage73 acre-ft
Surface Area73 acres
Drainage Area0 sq mi
Max Discharge57 cfs
Year Completed1971 (55 years old)
NID IDWA00127

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 24, 2023
State Regulated: Yes
Regulatory Agency: Washington Dept of Ecology

Ownership

Eagle Lake Community Association

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Utter Dam?

Utter Dam 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 Utter Dam?

Utter Dam is owned by Eagle Lake Community Association (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Utter Dam built?

Utter Dam was completed in 1971, making it 55 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 Utter Dam?

Utter Dam serves the following purposes: Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

When was Utter Dam last inspected?

Utter Dam was last inspected on August 24, 2023. 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.