Quaker Mills Milldam

MAQUOKETA RIVER· Delaware, Iowa· Built 1922· Gravity· 20 ft tall
Low Hazard Recreation Private

Key Takeaway

Quaker Mills Milldam is classified as low hazard in Iowa. It was completed in 1922 and is 104 years old. Its primary use is recreation.

Physical Details

Dam Height 20 ft (taller than 7.5% in IA)
Dam Length200 ft
Dam TypeGravity
Max Storage1.3K acre-ft
Normal Storage1.3K acre-ft
Surface Area125 acres
Drainage Area159 sq mi
Max Discharge0 cfs
Year Completed1922 (104 years old)
NID IDIA01301

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: August 5, 2010
State Regulated: Yes
Regulatory Agency: IOWA DNR

Ownership

Willard Hawker

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Quaker Mills Milldam?

Quaker Mills Milldam 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 Quaker Mills Milldam?

Quaker Mills Milldam is owned by Willard Hawker (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Quaker Mills Milldam built?

Quaker Mills Milldam was completed in 1922, making it 104 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 Quaker Mills Milldam?

Quaker Mills Milldam 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 Quaker Mills Milldam?

Quaker Mills Milldam has a dam height of 20 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 Quaker Mills Milldam last inspected?

Quaker Mills Milldam was last inspected on August 5, 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.