Oneal Dam One is an earth dam located in Montgomery County, Missouri, built in 1969. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall, taller than 55% of U.S. dams with a recorded height. 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 Oneal Dam One
The primary purpose of Oneal Dam One 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 R P Oneal (private). It impounds the Tr-synthianna Cr near Gasconade.
The dam stands 26 feet tall, creates a reservoir covering 2 acres, has a maximum storage capacity of 28 acre-feet, and collects water from a drainage area of 110 square miles. Completed in 1969, 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 | Montgomery |
| Nearest City | Gasconade |
| River/Stream | Tr-synthianna Cr |
| Coordinates | 38.71611, -91.60361 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 28 acre-ft |
| Max Storage | 28 acre-ft |
| Normal Storage | 14 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 110 sq mi |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | R P Oneal |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO30379 |
| Federal ID | MO30379 |
| More Info | State Dam Safety Program |