San Augustine City Lake Dam
San Augustine City Lake Dam is an earth dam located in San Augustine County, Texas, built in 1959. It carries a High hazard potential classification and has a fair condition assessment.
About San Augustine City Lake Dam
The primary purpose of San Augustine City Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of San Augustine (local government). It impounds the Carrizo Creek.
The dam stands 49 feet tall and stretches 2,000 feet across, creates a reservoir covering 183 acres, has a maximum storage capacity of 5,450 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1959, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 02/18/2020.
At 49 feet, this dam is taller than 92% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Texas dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Texas |
| County | San Augustine |
| River/Stream | Carrizo Creek |
| Coordinates | 31.50766, -94.10286 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 46 ft |
| Dam Length | 2,000 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 5,450 acre-ft |
| Max Storage | 5,450 acre-ft |
| Normal Storage | 2,750 acre-ft |
| Surface Area | 183 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 1 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF SAN AUGUSTINE |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 02/18/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX04456 |
| Federal ID | TX04456 |
| More Info | State Dam Safety Program |