Mcmannis Lake Dam is an earth dam located in Gonzales County, Texas, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 792 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 Mcmannis Lake Dam
The primary purpose of Mcmannis Lake 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 C Mcmannis (private). It impounds the Tr-denton Creek.
The dam stands 15 feet tall and stretches 792 feet across, creates a reservoir covering 8 acres, and has a maximum storage capacity of 104 acre-feet. Completed in 1960, 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 | Texas |
| County | Gonzales |
| River/Stream | Tr-denton Creek |
| Coordinates | 29.31352, -97.39953 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 792 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 104 acre-ft |
| Max Storage | 104 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 8 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | C Mcmannis |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX05509 |
| Federal ID | TX05509 |
| More Info | State Dam Safety Program |