Hudson Bay

BRUNSWEILER RIVER· Ashland, Wisconsin· Built 1969· Gravity· 8 ft tall
Low Hazard Recreation Local Government

Key Takeaway

Hudson Bay is classified as low hazard in Wisconsin. It was completed in 1969 and is 57 years old. Its primary use is recreation.

Physical Details

Dam Height 8 ft (taller than 5.5% in WI)
Dam Length56 ft
Dam TypeGravity
Max Storage672 acre-ft
Normal Storage560 acre-ft
Surface Area240 acres
Drainage Area19 sq mi
Max Discharge600 cfs
Year Completed1969 (57 years old)
NID IDWI00882

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: May 5, 2011
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Ashland County

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Hudson Bay?

Hudson Bay 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 Hudson Bay?

Hudson Bay is owned by Ashland County (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Hudson Bay built?

Hudson Bay was completed in 1969, making it 57 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 Hudson Bay?

Hudson Bay 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 Hudson Bay?

Hudson Bay has a dam height of 8 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 Hudson Bay last inspected?

Hudson Bay was last inspected on May 5, 2011. 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.