Olson Dam; Roger

Lake Sakakawea-TR· Williams, North Dakota· Built 1980· Earth· 23 ft tall
Low Hazard Irrigation Private

Key Takeaway

Olson Dam; Roger is classified as low hazard in North Dakota. It was completed in 1980 and is 46 years old. Its primary use is irrigation.

Physical Details

Dam Height 23 ft (taller than 73.3% in ND)
Dam Length291 ft
Dam TypeEarth
Max Storage180 acre-ft
Normal Storage96 acre-ft
Surface Area12 acres
Drainage Area7 sq mi
Year Completed1980 (46 years old)
NID IDND00775

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
State Regulated: Yes
Regulatory Agency: ND DWR

Ownership

Roger Olson

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Olson Dam; Roger?

Olson Dam; Roger 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 Olson Dam; Roger?

Olson Dam; Roger is owned by Roger Olson (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Olson Dam; Roger built?

Olson Dam; Roger was completed in 1980, making it 46 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 Olson Dam; Roger?

Olson Dam; Roger 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 Olson Dam; Roger?

Olson Dam; Roger has a dam height of 23 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.