Spring Lake

SCUPPERNONG· Jefferson, Wisconsin· Built 1844· Gravity· 17 ft tall
High Hazard Recreation Local Government

Key Takeaway

Spring Lake is classified as high hazard in Wisconsin. It was completed in 1844 and is 182 years old. Its primary use is recreation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.

Physical Details

Dam Height 17 ft (taller than 53.1% in WI)
Dam Length1,050 ft
Dam TypeGravity
Max Storage560 acre-ft
Normal Storage451 acre-ft
Surface Area104 acres
Drainage Area29 sq mi
Max Discharge654 cfs
Year Completed1844 (182 years old)
NID IDWI00144

Safety Information

High Hazard

Loss of human life is likely if the dam fails.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: September 14, 2021
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Village Of Palmyra

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Spring Lake?

Spring Lake is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Spring Lake?

Spring Lake is owned by Village Of Palmyra (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Spring Lake built?

Spring Lake was completed in 1844, making it 182 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 Spring Lake?

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

How tall is Spring Lake?

Spring Lake has a dam height of 17 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 Spring Lake last inspected?

Spring Lake was last inspected on September 14, 2021. 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.