Mason Marcks Forsythe 1

Tributary Little Plum Creek· Pepin, Wisconsin· Built 1978· Gravity· 25 ft tall
Low Hazard Flood Risk Reduction Private

Key Takeaway

Mason Marcks Forsythe 1 is classified as low hazard in Wisconsin. It was completed in 1978 and is 48 years old. Its primary use is flood risk reduction.

Physical Details

Dam Height 25 ft (taller than 70.9% in WI)
Dam Length540 ft
Dam TypeGravity
Max Storage76 acre-ft
Normal Storage7 acre-ft
Surface Area3 acres
Drainage Area1 sq mi
Max Discharge118 cfs
Year Completed1978 (48 years old)
NID IDWI00870

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: April 27, 2010
State Regulated: Yes
Regulatory Agency: WIDNR

Ownership

Marcks, Randall and Kim

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Mason Marcks Forsythe 1?

Mason Marcks Forsythe 1 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 Mason Marcks Forsythe 1?

Mason Marcks Forsythe 1 is owned by Marcks, Randall and Kim (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Mason Marcks Forsythe 1 built?

Mason Marcks Forsythe 1 was completed in 1978, making it 48 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 Mason Marcks Forsythe 1?

Mason Marcks Forsythe 1 serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Mason Marcks Forsythe 1?

Mason Marcks Forsythe 1 has a dam height of 25 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 Mason Marcks Forsythe 1 last inspected?

Mason Marcks Forsythe 1 was last inspected on April 27, 2010. 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.