Mass Dam
Mass Dam is an earth dam located in Mills County, Iowa, built in 1959. It carries a Low hazard potential classification.
About Mass Dam
The primary purpose of Mass 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 Otha Mass (private). It impounds the Tr-silver Creek near Silver City.
The dam stands 28 feet tall and stretches 307 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 41 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1959, 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 11/05/1964. That was over 61 years ago.
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Location
| State | Iowa |
| County | Mills |
| Nearest City | Silver City |
| River/Stream | Tr-silver Creek |
| Coordinates | 41.15850, -95.58810 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 307 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 41 acre-ft |
| Max Storage | 41 acre-ft |
| Normal Storage | 21 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 | Otha Mass |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 11/05/1964 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00697 |
| Federal ID | IA00697 |
| More Info | State Dam Safety Program |