Montague No. 2

Tr Oregon Slough· Siskiyou, California· Built 1978· Earth· 41 ft tall
Low Hazard Water Supply Other Irrigation Local Government

Key Takeaway

Montague No. 2 is classified as low hazard in California. It was completed in 1978 and is 48 years old. Its primary use is water supply.

Physical Details

Dam Height 41 ft (taller than 49.2% in CA)
Dam Length1,250 ft
Dam TypeEarth
Max Storage160 acre-ft
Surface Area14 acres
Drainage Area0 sq mi
Year Completed1978 (48 years old)
NID IDCA01135

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: March 22, 2022
State Regulated: Yes
Regulatory Agency: DWR, Division of Safety of Dams

Ownership

City of Montague

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Montague No. 2?

Montague No. 2 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 Montague No. 2?

Montague No. 2 is owned by City of Montague (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Montague No. 2 built?

Montague No. 2 was completed in 1978, making it 48 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 Montague No. 2?

Montague No. 2 serves the following purposes: Water Supply, Other, Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Montague No. 2?

Montague No. 2 has a dam height of 41 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 Montague No. 2 last inspected?

Montague No. 2 was last inspected on March 22, 2022. 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.