Dunham Dam is an earth dam located in Johnson County, Iowa, built in 1978. It carries a Low hazard potential classification.
Dam profile
NID height · 38 ft38 ft tall and 255 ft long, taller than 84% 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 Dunham Dam
The primary purpose of Dunham 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 Robert Dunham (private). It impounds the Tr- Iowa River near Iowa City.
The dam stands 38 feet tall and stretches 255 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 34 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1978, the structure is 48 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.
At 38 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | Iowa |
| County | Johnson |
| Nearest City | Iowa City |
| River/Stream | Tr- Iowa River |
| Coordinates | 41.81330, -91.81510 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 255 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 34 acre-ft |
| Max Storage | 34 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Robert Dunham |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02887 |
| Federal ID | IA02887 |
| More Info | State Dam Safety Program |