Mc Donald Dam is an earth dam located in Union County, Iowa, built in 2001. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 483 ft long, taller than 68% 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 Donald Dam
The primary purpose of Mc Donald 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 John C Mcdonald (private). It impounds the Tr- Twomile Creek near Thayer.
The dam stands 30 feet tall and stretches 483 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 138 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2001, the structure is relatively new.
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 | Union |
| Nearest City | Thayer |
| River/Stream | Tr- Twomile Creek |
| Coordinates | 41.08670, -94.06000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 483 ft |
| Year Completed | 2001 (25 years old) |
Storage & Hydraulics
| NID Storage | 138 acre-ft |
| Max Storage | 138 acre-ft |
| Normal Storage | 46 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | John C Mcdonald |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03815 |
| Federal ID | IA03815 |
| More Info | State Dam Safety Program |