Iowa Noname20 is an earth dam located in Humboldt County, Iowa, built in 1968. It carries a Low hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 360 ft long. 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 Iowa Noname20
The primary purpose of Iowa Noname20 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 Humboldt County Board of Supervisors (local government). It impounds the Tr-east Branch Des Moines Riv near Dakota City.
The dam stands 21 feet tall and stretches 360 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 81 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1968, 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. The most recent inspection on record was 09/12/1963. That was over 63 years ago.
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Location
| State | Iowa |
| County | Humboldt |
| Nearest City | Dakota City |
| River/Stream | Tr-east Branch Des Moines Riv |
| Coordinates | 42.78220, -94.11850 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 360 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 81 acre-ft |
| Max Storage | 81 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Humboldt County Board of Supervisors |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/12/1963 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00497 |
| Federal ID | IA00497 |
| More Info | State Dam Safety Program |