Walton Lake Dam
Walton Lake Dam is an earth dam located in Bandera County, Texas, built in 1940. It carries a High hazard potential classification.
About Walton Lake Dam
The primary purpose of Walton Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Osama Attal (private). It impounds the South Fork San Geronimo Creek near San Geronimo.
The dam stands 50 feet tall and stretches 1,250 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 627 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1940, the structure is well-established, with more than 75 years of service.
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. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 01/31/2019. That was 7 years ago, which is on the longer end for a high-hazard structure.
At 50 feet, this dam is taller than 93% 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 | Bandera |
| Nearest City | San Geronimo |
| River/Stream | South Fork San Geronimo Creek |
| Coordinates | 29.66599, -98.83782 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 50 ft |
| Dam Height | 50 ft |
| Dam Length | 1,250 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 627 acre-ft |
| Max Storage | 627 acre-ft |
| Normal Storage | 189 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 4,760 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | OSAMA ATTAL |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 01/31/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | TX02903 |
| Federal ID | TX02903 |
| More Info | State Dam Safety Program |