Stillhouse Hollow Dam
Stillhouse Hollow Dam is an earth dam located in Bell County, Texas, built in 1968. It carries a High hazard potential classification.
About Stillhouse Hollow Dam
The primary purpose of Stillhouse Hollow 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 Usace - Fort Worth District (federal). It impounds the Lampasas River near Cameron.
The dam stands 200 feet tall and stretches 9,720 feet across, creates a reservoir covering 6,430 acres, has a maximum storage capacity of 1,013,800 acre-feet, and collects water from a drainage area of 1,319 square miles. Completed in 1968, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 05/13/2021.
At 200 feet, this dam is taller than 99% of all dams in the United States.
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 | Bell |
| Nearest City | Cameron |
| River/Stream | Lampasas River |
| Coordinates | 31.02245, -97.53111 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 200 ft |
| Dam Height | 195 ft |
| Dam Length | 9,720 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 1,013,800 acre-ft |
| Max Storage | 1,013,800 acre-ft |
| Normal Storage | 235,700 acre-ft |
| Surface Area | 6,430 acres |
| Drainage Area | 1,319 sq mi |
| Max Discharge | 781,483 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - Fort Worth District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 05/13/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX00014 |
| Federal ID | TX00014 |
| More Info | State Dam Safety Program |