Stillhouse Hollow Dam, located on the Lampasas River in Bell County, Texas, was completed in 1968 by the US Army Corps of Engineers for the primary purpose of flood risk reduction. The dam, an earth structure with stone core, stands at a height of 195 feet and has a maximum storage capacity of 1,013,800 acre-feet. Despite reducing the risk of flooding for downstream communities, the dam is still classified as having a high hazard potential with risks of concentrated leak erosion and overtopping. In the event of a breach, areas such as Belton, Little River-Academy, and Cameron could see flood wave arrival times within 1.5-3 hours, with downstream areas facing high flood depths and potential devastation.

To mitigate risks associated with the dam, regular inspections, monitoring, and maintenance are conducted by USACE Fort Worth District. Surveillance is increased as lake elevation rises, and new measures such as seepage collection weirs and automated data collection systems have been implemented based on past performance and recommendations from risk assessments. Emergency supply materials are stockpiled, and collaboration with local emergency managers includes annual updates to the Emergency Action Plan, evacuation drills, and communication of risks to stakeholders. Despite ongoing risk management efforts, the potential for significant loss of life and economic damages in the event of a breach underscores the importance of continued vigilance and preparedness.