Mononame 658 is a rockfill dam located in Vernon County, Missouri, built in 1954. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic rockfill embankment section and the water level is illustrative.
About Mononame 658
The primary purpose of Mononame 658 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 Unknown (private). It impounds the Tr Cynthia Cr near Montevallo.
The dam stands 20 feet tall, creates a reservoir covering 5 acres, has a maximum storage capacity of 54 acre-feet, and collects water from a drainage area of 80 square miles. Completed in 1954, 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.
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Location
| State | Missouri |
| County | Vernon |
| Nearest City | Montevallo |
| River/Stream | Tr Cynthia Cr |
| Coordinates | 37.64265, -94.12029 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 54 acre-ft |
| Max Storage | 54 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 80 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Unknown |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO20281 |
| Federal ID | MO20281 |
| More Info | State Dam Safety Program |