Iris Lake Dam

Tr-Turkey River· Fayette, Iowa· Built 2004· Earth· 66 ft tall
Low Hazard Fire Protection Stock Or Small Fish Pond Private

Key Takeaway

Iris Lake Dam is classified as low hazard in Iowa. It was completed in 2004 and is 22 years old. Its primary use is fire protection.

Physical Details

Dam Height 66 ft (taller than 99.3% in IA)
Dam Length650 ft
Dam TypeEarth
Max Storage618 acre-ft
Normal Storage390 acre-ft
Surface Area19 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed2004 (22 years old)
NID IDIA03513

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 7, 2019
State Regulated: Yes
Regulatory Agency: IOWA DNR

Ownership

Robert Reilly

Private

Nearby Dams

Clermont Milldam

Fayette, IA

Low Hazard 16 ft

Dennis Koenig Dam

Winneshiek, IA

Low Hazard 28 ft

Swiss Lake Estates Dam

Fayette, IA

Low Hazard 44 ft

Masek Dam

Winneshiek, IA

Low Hazard 25 ft

Lake Meyer Dam

Winneshiek, IA

Low Hazard 46 ft

Fort Atkinson Milldam

Winneshiek, IA

Low Hazard 11 ft

Frequently Asked Questions

What is the hazard classification of Iris Lake Dam?

Iris Lake 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 Iris Lake Dam?

Iris Lake Dam is owned by Robert Reilly (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Iris Lake Dam built?

Iris Lake Dam was completed in 2004, making it 22 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 Iris Lake Dam?

Iris Lake Dam serves the following purposes: Fire Protection, Stock, Or Small Fish Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Iris Lake Dam?

Iris Lake Dam has a dam height of 66 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 Iris Lake Dam last inspected?

Iris Lake Dam was last inspected on August 7, 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.