Mc Millan Dam
Key Takeaway
Mc Millan Dam is classified as low hazard in Iowa. It was completed in 1987 and is 39 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 28 ft (taller than 36.9% in IA) |
| Dam Length | 510 ft |
| Dam Type | Earth |
| Max Storage | 71 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1987 (39 years old) |
| NID ID | IA02513 |
Safety Information
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?
Ownership
Thomas McMillan
Private
Nearby Dams
Little River Watershed Site 58
Decatur, IA
Low Hazard 28 ftLittle River Watershed Site M-1
Decatur, IA
High Hazard 61 ftLittle River Watershed Site 65-3
Decatur, IA
Significant Hazard 22 ftLittle River Watershed Site 65-1
Decatur, IA
Low Hazard 31 ftSaxton Dam #3
Decatur, IA
Low Hazard 28 ftLittle River Watershed Site 51-1
Decatur, IA
Significant Hazard 30 ftSaxton Dam
Decatur, IA
Low Hazard 29 ftRod and Reel Lake Dam
Decatur, IA
Low Hazard 35 ftFrequently Asked Questions
What is the hazard classification of Mc Millan Dam?
Mc Millan 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 Mc Millan Dam?
Mc Millan Dam is owned by Thomas McMillan (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mc Millan Dam built?
Mc Millan Dam was completed in 1987, making it 39 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 Mc Millan Dam?
Mc Millan 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 Mc Millan Dam?
Mc Millan Dam has a dam height of 28 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.