Upper Brushy Creek Ws Scs Site 12 Dam is an earth dam located in Williamson County, Texas, built in 1967. It carries a High hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 32 ft32 ft tall and 5,000 ft long, taller than 74% 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 Upper Brushy Creek Ws Scs Site 12 Dam
The primary purpose of Upper Brushy Creek Ws Scs Site 12 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 Taylor Swcd;upper Brushy Creek Wcid (local government). It impounds the Onion Branch near Round Rock.
The dam stands 32 feet tall and stretches 5,000 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 2,984 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1967, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/07/2020.
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 | Williamson |
| Nearest City | Round Rock |
| River/Stream | Onion Branch |
| Coordinates | 30.53654, -97.71095 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 5,000 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 2,984 acre-ft |
| Max Storage | 2,984 acre-ft |
| Normal Storage | 104 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 12,338 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Taylor Swcd;upper Brushy Creek Wcid |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/07/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX01351 |
| Federal ID | TX01351 |
| More Info | State Dam Safety Program |