Island Lake 13

Threemile Creek· Lyon, Minnesota· Built 1994· 31 ft tall
Low Hazard Flood Risk Reduction Local Government

Key Takeaway

Island Lake 13 is classified as low hazard in Minnesota. It was completed in 1994 and is 32 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 31 ft (taller than 85% in MN)
Dam Length1,940 ft
Max Storage920 acre-ft
Drainage Area28 sq mi
Year Completed1994 (32 years old)
NID IDMN01730

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 9, 2022
State Regulated: Yes
Regulatory Agency: MNDNR EWR

Ownership

County of Lyon

Local Government

Nearby Dams

Island Lake 22b

Lyon, MN

Low Hazard 33 ft

Lynd 30

Lyon, MN

Low Hazard 18 ft

Lynd 8

Lyon, MN

Low Hazard 27 ft

Nordland 35

Lyon, MN

Low Hazard 18 ft

Runholt-Mellenthin

Lyon, MN

Low Hazard 16 ft

Island Lake 4

Lyon, MN

Low Hazard 41 ft

Sonstegard-Telste

Lyon, MN

Significant Hazard 42 ft

Lynd 16

Lyon, MN

Low Hazard 19 ft

Frequently Asked Questions

What is the hazard classification of Island Lake 13?

Island Lake 13 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 Island Lake 13?

Island Lake 13 is owned by County of Lyon (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Island Lake 13 built?

Island Lake 13 was completed in 1994, making it 32 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 Island Lake 13?

Island Lake 13 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Island Lake 13?

Island Lake 13 has a dam height of 31 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 Island Lake 13 last inspected?

Island Lake 13 was last inspected on September 9, 2022. 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.