Attoyac Bayou Ws Scs Site 20 Dam is an earth dam located in Nacogdoches County, Texas, built in 1977. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 1,205 ft long, taller than 80% 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 Attoyac Bayou Ws Scs Site 20 Dam
The primary purpose of Attoyac Bayou Ws Scs Site 20 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Attoyac Bayou Watershed Authority;nacogdoches County;nacogdoches Swcd (local government). It impounds the Wanders Creek.
The dam stands 35 feet tall and stretches 1,205 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 1,834 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1977, the structure is 49 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 05/01/2013. That was over 13 years ago.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Texas |
| County | Nacogdoches |
| River/Stream | Wanders Creek |
| Coordinates | 31.81679, -94.55832 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 1,205 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 1,834 acre-ft |
| Max Storage | 1,834 acre-ft |
| Normal Storage | 72 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Attoyac Bayou Watershed Authority;nacogdoches County;nacogdoches Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/01/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX04487 |
| Federal ID | TX04487 |
| More Info | State Dam Safety Program |