Rock Creek Flowage Dam

ROCK CREEK· Clark, Wisconsin· Built 1969· Earth· 16 ft tall
Low Hazard Recreation Private

Key Takeaway

Rock Creek Flowage Dam 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 16 ft (taller than 48.8% in WI)
Dam Length860 ft
Dam TypeEarth
Max Storage340 acre-ft
Normal Storage87 acre-ft
Surface Area26 acres
Drainage Area2 sq mi
Max Discharge350 cfs
Year Completed1969 (57 years old)
NID IDWI00494

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: September 23, 2019
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Etta, Leonard

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Rock Creek Flowage Dam?

Rock Creek Flowage Dam 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 Rock Creek Flowage Dam?

Rock Creek Flowage Dam is owned by Etta, Leonard (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Rock Creek Flowage Dam built?

Rock Creek Flowage Dam 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 Rock Creek Flowage Dam?

Rock Creek Flowage Dam 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 Rock Creek Flowage Dam?

Rock Creek Flowage Dam has a dam height of 16 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 Rock Creek Flowage Dam last inspected?

Rock Creek Flowage Dam was last inspected on September 23, 2019. 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.