Little Green Lake Outlet

LITTLE GREEN LAKE OUTLET· Green Lake, Wisconsin· Built 1934· Gravity· 11 ft tall
Low Hazard Recreation Local Government

Key Takeaway

Little Green Lake Outlet is classified as low hazard in Wisconsin. It was completed in 1934 and is 92 years old. Its primary use is recreation.

Physical Details

Dam Height 11 ft (taller than 24.3% in WI)
Dam Length1,000 ft
Dam TypeGravity
Max Storage2.3K acre-ft
Normal Storage500 acre-ft
Surface Area466 acres
Drainage Area5 sq mi
Max Discharge75 cfs
Year Completed1934 (92 years old)
NID IDWI10167

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: Yes
Last Inspection: June 25, 2021
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Little Green Lake Protection and Rehabilitation District

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Little Green Lake Outlet?

Little Green Lake Outlet 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 Little Green Lake Outlet?

Little Green Lake Outlet is owned by Little Green Lake Protection and Rehabilitation District (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Little Green Lake Outlet built?

Little Green Lake Outlet was completed in 1934, making it 92 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 Little Green Lake Outlet?

Little Green Lake Outlet 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 Little Green Lake Outlet?

Little Green Lake Outlet has a dam height of 11 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 Little Green Lake Outlet last inspected?

Little Green Lake Outlet was last inspected on June 25, 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.