William Sensley Dam is an earth dam located in Union Parish, Louisiana, built in 1990. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 14 ft14 ft tall and 425 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 William Sensley Dam
The primary purpose of William Sensley 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 Butch Sensley (private). It impounds the Tr-horse Through near Spearsville.
The dam stands 14 feet tall and stretches 425 feet across, creates a reservoir covering 21 acres, has a maximum storage capacity of 111 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1990, the structure is 36 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 01/15/2025.
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Location
| State | Louisiana |
| County | Union |
| Nearest City | Spearsville |
| River/Stream | Tr-horse Through |
| Coordinates | 32.88100, -92.49300 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 425 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 111 acre-ft |
| Max Storage | 111 acre-ft |
| Normal Storage | 107 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 340 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Butch Sensley |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 01/15/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | LA00523 |
| Federal ID | LA00523 |
| More Info | State Dam Safety Program |