Lake Travis low water aerial view showing exposed limestone shoals and navigating boat.
Lake Travis low water aerial view showing exposed limestone shoals and navigating boat.

Understanding Lake Travis Elevation Dynamics

Lake Travis is the primary flood-control and water-storage reservoir for the Highland Lakes chain on the Colorado River, managed by the Lower Colorado River Authority (LCRA). While upper lakes like LBJ and Inks Lake are maintained near constant level, Lake Travis acts as the system buffer, meaning its water level fluctuates dramatically across multi-year rainfall cycles.

Normal conservation pool is 681.0 feet MSL. During severe Texas droughts (such as 1951, 2011, and 2023), water elevations can drop 30 to 50 feet below normal pool, exposing underwater limestone formations that have grounded dozens of motorized vessels.

Top Submerged Hazards to Avoid Below 650 ft MSL

  • Sometimes Island: Located mid-lake across from Mansfield Dam Park, this feature becomes a fully emergent island when pool elevation drops below 670 ft. When water sits between 665 and 675 ft, the island's rocky crest sits just beneath the surface—a treacherous hazard for wakeboarders and cruisers unaware of the terrain.
  • Starnes Island Shallows: The perimeter around Starnes Island drops off sharply on the west but extends as a shallow limestone shelf toward the north shore. Give this area a minimum 200-yard buffer.
  • Hurst Creek & Graveyard Point: At normal pool, Hurst Creek is a serene residential cove. Below 640 ft, the mouth of the creek narrows to a shallow gravel channel with exposed tree stumps.

    • Public Boat Ramps Usable at Low Pool

    Not all concrete boat ramps are constructed to the same depth. Launching at a grounded ramp can result in trailer axle damage:

    • Mansfield Dam Park (Deepest Public Ramp): Rebuilt with extended concrete lanes, this ramp remains operational down to approximately 630.0 ft MSL, making it the safest public launching venue during prolonged droughts.
    • Pace Bend Park Ramps: North and South boat ramps generally close when water recedes past 650 ft MSL. Always check official Travis County Parks status flags before making the drive.
    • Arkansas Bend Park: Closes around 655 ft MSL due to shallow gravel approaches.