Dunham Dam is an earth dam located in Crawford County, Iowa, built in 1970. It carries a Low hazard potential classification.
Dam profile
NID height · 58 ft58 ft tall and 660 ft long, taller than 95% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 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 Rw Dunham & Son (private). It impounds the Tr-boyer River near Dunlap.
The dam stands 58 feet tall and stretches 660 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 82 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, the structure is well into its service life at over 50 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 58 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | Iowa |
| County | Crawford |
| Nearest City | Dunlap |
| River/Stream | Tr-boyer River |
| Coordinates | 41.87850, -95.62930 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 58 ft |
| Dam Height | 58 ft |
| Dam Length | 660 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 82 acre-ft |
| Max Storage | 82 acre-ft |
| Normal Storage | 53 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Rw Dunham & Son |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00248 |
| Federal ID | IA00248 |
| More Info | State Dam Safety Program |