Boulder Lake Dike Cc

Otter Creek· St. Louis, Minnesota· Built 1919· Earth· 20 ft tall
Low Hazard Hydroelectric Recreation Private

Key Takeaway

Boulder Lake Dike Cc is classified as low hazard in Minnesota. It was completed in 1919 and is 107 years old. Its primary use is hydroelectric.

Physical Details

Dam Height 20 ft (taller than 60.7% in MN)
Dam TypeEarth
Max Storage30.3K acre-ft
Normal Storage29.4K acre-ft
Surface Area4,100 acres
Year Completed1919 (107 years old)
NID IDMN00611

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: September 30, 2018
State Regulated: Yes
Regulatory Agency: MNDNR EWR

Ownership

Allete, Inc.

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Boulder Lake Dike Cc?

Boulder Lake Dike Cc 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 Boulder Lake Dike Cc?

Boulder Lake Dike Cc is owned by Allete, Inc. (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Boulder Lake Dike Cc built?

Boulder Lake Dike Cc was completed in 1919, making it 107 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 Boulder Lake Dike Cc?

Boulder Lake Dike Cc serves the following purposes: Hydroelectric, Recreation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Boulder Lake Dike Cc?

Boulder Lake Dike Cc has a dam height of 20 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 Boulder Lake Dike Cc last inspected?

Boulder Lake Dike Cc was last inspected on September 30, 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.