Mc Millan Dam is an earth dam located in Decatur County, Iowa, built in 1987. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 510 ft long, taller than 62% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Mc Millan Dam
The primary purpose of Mc Millan Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Thomas Mcmillan (private). It impounds the Tr- Little near State of Missouri.
The dam stands 28 feet tall and stretches 510 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 71 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1987, the structure is 39 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Iowa |
| County | Decatur |
| Nearest City | State of Missouri |
| River/Stream | Tr- Little |
| Coordinates | 40.73100, -93.76850 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 510 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 71 acre-ft |
| Max Storage | 71 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Thomas Mcmillan |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02513 |
| Federal ID | IA02513 |
| More Info | State Dam Safety Program |