Middle Lake

County Ditch 4A· Nicollet, Minnesota· Built 1946· Gravity· 6 ft tall
Low Hazard Other Local Government

Key Takeaway

Middle Lake is classified as low hazard in Minnesota. It was completed in 1946 and is 80 years old. Its primary use is other.

Physical Details

Dam Height 6 ft (taller than 1.9% in MN)
Dam Length25 ft
Dam TypeGravity
Max Storage6.6K acre-ft
Normal Storage2.2K acre-ft
Drainage Area14 sq mi
Max Discharge300 cfs
Year Completed1946 (80 years old)
Year Modified1985
NID IDMN00160

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: June 15, 2016
State Regulated: Yes
Regulatory Agency: MNDNR EWR

Ownership

County of Nicollet

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Middle Lake?

Middle 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 Middle Lake?

Middle Lake is owned by County of Nicollet (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Middle Lake built?

Middle Lake was completed in 1946, making it 80 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 Middle Lake?

Middle Lake serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Middle Lake?

Middle Lake has a dam height of 6 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 Middle Lake last inspected?

Middle Lake was last inspected on June 15, 2016. 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.