Lower Balsam Lake

BALSAM BRANCH· Polk, Wisconsin· Built 1860· Gravity· 38 ft tall
Significant Hazard Hydroelectric Recreation Local Government

Key Takeaway

Lower Balsam Lake is classified as significant hazard in Wisconsin. It was completed in 1860 and is 166 years old. Its primary use is hydroelectric. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 38 ft (taller than 91.1% in WI)
Dam Length220 ft
Dam TypeGravity
Max Storage22.3K acre-ft
Normal Storage12.0K acre-ft
Surface Area2,054 acres
Drainage Area24 sq mi
Max Discharge600 cfs
Year Completed1860 (166 years old)
NID IDWI00024

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

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

Emergency Action Plan: Yes
Last Inspection: July 15, 2015
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Village Of Balsam Lake

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Lower Balsam Lake?

Lower Balsam Lake is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Lower Balsam Lake?

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

When was Lower Balsam Lake built?

Lower Balsam Lake was completed in 1860, making it 166 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 Lower Balsam Lake?

Lower Balsam Lake 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 Lower Balsam Lake?

Lower Balsam Lake has a dam height of 38 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 Lower Balsam Lake last inspected?

Lower Balsam Lake was last inspected on July 15, 2015. 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.