Delavan

TURTLE CREEK· Walworth, Wisconsin· Built 1947· Gravity· 13 ft tall
Low Hazard Recreation Local Government

Key Takeaway

Delavan is classified as low hazard in Wisconsin. It was completed in 1947 and is 79 years old. Its primary use is recreation.

Physical Details

Dam Height 13 ft (taller than 35.2% in WI)
Dam Length100 ft
Dam TypeGravity
Max Storage850 acre-ft
Normal Storage606 acre-ft
Surface Area164 acres
Drainage Area67 sq mi
Max Discharge1,490 cfs
Year Completed1947 (79 years old)
NID IDWI00321

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 2, 2021
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

City Of Delavan

Local Government

Nearby Dams

Borg

Walworth, WI

Low Hazard 12 ft

Turtle Valley Central Phase

Walworth, WI

Low Hazard 10 ft

Turtle Valley Phase Iii

Walworth, WI

Low Hazard 13 ft

Morrissey

Walworth, WI

Low Hazard 12 ft

Whitewater Lake

Walworth, WI

Low Hazard 11 ft

Rice Lake

Walworth, WI

High Hazard 18 ft

Lauderdale Lakes

Walworth, WI

High Hazard 14 ft

Droster,Elmer

Walworth, WI

Low Hazard 28 ft

Frequently Asked Questions

What is the hazard classification of Delavan?

Delavan 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 Delavan?

Delavan is owned by City Of Delavan (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Delavan built?

Delavan was completed in 1947, making it 79 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 Delavan?

Delavan 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 Delavan?

Delavan has a dam height of 13 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 Delavan last inspected?

Delavan was last inspected on June 2, 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.