Long Lake

Cottonwood, Minnesota· Built 2017· 10 ft tall
Low Hazard Fish And Wildlife Pond State Government

Key Takeaway

Long Lake is classified as low hazard in Minnesota. It was completed in 2017 and is 9 years old. Its primary use is fish and wildlife pond.

Physical Details

Dam Height 10 ft (taller than 30.9% in MN)
Normal Storage585 acre-ft
Drainage Area0 sq mi
Year Completed2017 (9 years old)
NID IDMN01808

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: November 15, 2018
State Regulated: Yes
Regulatory Agency: MNDNR EWR

Ownership

MNDNR-Wildlife

State Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Long Lake?

Long Lake 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 Long Lake?

Long Lake is owned by MNDNR-Wildlife (State Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Long Lake built?

Long Lake was completed in 2017, making it 9 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 Long Lake?

Long Lake 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 Long Lake?

Long Lake has a dam height of 10 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 Long Lake last inspected?

Long Lake was last inspected on November 15, 2018. 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.