Millwood Plant Dam

TRIBUTARY TO KOKOSING RIVER· Knox, Ohio· Earth· 14 ft tall
Significant Hazard Water Supply Private

Key Takeaway

Millwood Plant Dam is classified as significant hazard in Ohio. Its primary use is water supply. Significant hazard means failure could cause economic or environmental damage. Learn more.

Physical Details

Dam Height 14 ft (taller than 9.6% in OH)
Dam Length455 ft
Dam TypeEarth
Max Storage31 acre-ft
Normal Storage9 acre-ft
Surface Area3 acres
Drainage Area0 sq mi
Max Discharge49 cfs
NID IDOH01860

Safety Information

Significant Hazard

No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: Yes
Last Inspection: November 25, 2019
State Regulated: Yes
Regulatory Agency: Department of Natural Resources

Ownership

Leister Limited

Private

Nearby Dams

Neutralized Water Impoundment 3

Knox, OH

Significant Hazard 20 ft

Neutralized Water Impoundment 2

Knox, OH

Significant Hazard 22 ft

Workman Lake Dam

Knox, OH

Significant Hazard 30 ft

Apple Valley Lake Dam

Knox, OH

High Hazard 91 ft

Lake Ralph Dam

Knox, OH

Significant Hazard 19 ft

Lakeview Lake Dam

Knox, OH

Low Hazard 23 ft

Bethany Lake Dam

Holmes, OH

High Hazard 29 ft

Lake Viering Dam

Knox, OH

High Hazard 47 ft

Frequently Asked Questions

What is the hazard classification of Millwood Plant Dam?

Millwood Plant Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Millwood Plant Dam?

Millwood Plant Dam is owned by Leister Limited (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

What is the primary purpose of Millwood Plant Dam?

Millwood Plant Dam serves the following purposes: Water Supply. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Millwood Plant Dam?

Millwood Plant Dam has a dam height of 14 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 Millwood Plant Dam last inspected?

Millwood Plant Dam was last inspected on November 25, 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.