Rendering of the completed dam
Old Lampasas Dam Modernization
February 2026 Construction Update
Crews completed the auxiliary spillway's outlet wall and have begun work on the wastewater line that runs under the Old Lampasas Dam. Ground anchor installation continues throughout the month and is planned to last until this spring. Community members are advised to expect increased noise during regular construction hours.
Completed Work:
- The auxiliary spillway's outlet wall
- The principal spillway's strip drain was installed
Current Work:
- Ground anchor installation and casing
- Wastewater line installation
- Continuing backfill up to the original dam's elevation
Ground Anchor Installation
Project Background
Built in 1984, the Old Lampasas Dam is a high-risk dam that is in poor condition and was significantly damaged during Tropical Storm Hermine in 2010. This project will repair the dam, bring it into compliance with Texas Commission on Environmental Quality (TCEQ) safety regulations, reduce flood risks in the neighborhood, and improve water quality in Bull Creek. Construction for the Old Lampasas Dam Modernization project began in October 2024 and is anticipated to reach substantial completion by summer 2026, weather permitting.
Ground Anchor Installation
Reminders and Timeline
- This is an active construction site. For the safety of the public, unauthorized entry is not permitted.
- Construction hours adhere to the City's Noise Ordinance.
- Please note that as with any construction project, schedules are projected as accurately as possible, and all dates are subject to change due to the nature of construction and weather.
For more information, email CapitalDelivery@AustinTexas.gov
Visit us online at AustinTexas.gov/department/old-lampasas-dam-modernization
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