Johnson

Minnesota River-TR· Big Stone, Minnesota· Built 1990· Earth· 14 ft tall
Low Hazard Fish And Wildlife Pond Federal Government

Key Takeaway

Johnson is classified as low hazard in Minnesota. It was completed in 1990 and is 36 years old. Its primary use is fish and wildlife pond.

Physical Details

Dam Height 14 ft (taller than 48.1% in MN)
Dam Length430 ft
Dam TypeEarth
Max Storage66 acre-ft
Normal Storage24 acre-ft
Surface Area7 acres
Drainage Area18 sq mi
Max Discharge900 cfs
Year Completed1990 (36 years old)
NID IDMN00919

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: July 17, 2008
State Regulated: No

Ownership

USFWS

Federal Government

Nearby Dams

Steen Wma

Big Stone, MN

Low Hazard 10 ft

Big Stone Lake

Big Stone, MN

Significant Hazard 15 ft

South Rockwell Lake

Big Stone, MN

Low Hazard 12 ft

Ortonville 15

Big Stone, MN

Low Hazard 27 ft

Long Tom Lake

Big Stone, MN

Low Hazard 10 ft

Ortonville 25

Big Stone, MN

Low Hazard 22 ft

Mn River Pool 7 Dikes 1 & 2

Lac qui Parle, MN

Low Hazard 8 ft

Frequently Asked Questions

What is the hazard classification of Johnson?

Johnson 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 Johnson?

Johnson is owned by USFWS (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Johnson built?

Johnson was completed in 1990, making it 36 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 Johnson?

Johnson serves the following purposes: Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Johnson?

Johnson has a dam height of 14 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 Johnson last inspected?

Johnson was last inspected on July 17, 2008. 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.