Charles City Milldam

CEDAR RIVER· Floyd, Iowa· Built 1945· Gravity· 10 ft tall
Low Hazard Recreation Local Government

Key Takeaway

Charles City Milldam is classified as low hazard in Iowa. It was completed in 1945 and is 81 years old. Its primary use is recreation.

Physical Details

Dam Height 10 ft (taller than 2.1% in IA)
Dam Length236 ft
Dam TypeGravity
Max Storage606 acre-ft
Normal Storage606 acre-ft
Surface Area120 acres
Drainage Area1,054 sq mi
Max Discharge0 cfs
Year Completed1945 (81 years old)
NID IDIA01272

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: June 3, 1999
State Regulated: Yes
Regulatory Agency: IOWA DNR

Ownership

City of Charles City

Local Government

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Charles City Milldam?

Charles City 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 Charles City Milldam?

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

When was Charles City Milldam built?

Charles City Milldam was completed in 1945, making it 81 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 Charles City Milldam?

Charles City 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 Charles City Milldam?

Charles City Milldam has a dam height of 10 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 Charles City Milldam last inspected?

Charles City Milldam was last inspected on June 3, 1999. 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.