Pottawattamie Co Roadgrade Dam 8-76-42
Pottawattamie Co Roadgrade Dam 8-76-42 is an earth dam located in Pottawattamie County, Iowa, built in 1968. It carries a Low hazard potential classification.
About Pottawattamie Co Roadgrade Dam 8-76-42
The primary purpose of Pottawattamie Co Roadgrade Dam 8-76-42 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 Pottawattamie County Board Of Supervisors (local government). It impounds the Tr-mosquito Creek near Underwood.
The dam stands 43 feet tall and stretches 410 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 86 acre-feet, and collects water from a drainage area of 0 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.
At 43 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Iowa |
| County | Pottawattamie |
| Nearest City | Underwood |
| River/Stream | Tr-mosquito Creek |
| Coordinates | 41.40280, -95.68930 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 43 ft |
| Dam Height | 43 ft |
| Dam Length | 410 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 86 acre-ft |
| Max Storage | 86 acre-ft |
| Normal Storage | 54 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Pottawattamie County Board of Supervisors |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00933 |
| Federal ID | IA00933 |
| More Info | State Dam Safety Program |