Buoys and markers

​Buoys and markers are water traffic signs offering direction and information. They also help identify dangerous areas and restricted zones.

  • Learn to identify the different types of buoys and markers and what they mean.
  • Mile or channel markers are installed on the main channel of the Colorado River on lakes Buchanan and Travis. The river channel is not marked on other Highland Lakes.
  • Mile or channel markers are sequentially numbered starting at the dam about one mile apart. Facing upstream, green markers are on the left and have odd numbers. Red markers are on the right and have even numbers.
  • It’s a violation of state law to moor or attach a vessel to any buoy or marker. It’s also illegal to move, remove, displace, tamper with, damage or destroy any buoy or marker.
  • LCRA installs and maintains hazard buoys on LCRA lakes. Occasionally, a mile or channel marker or buoy may become detached from its anchor, or become damaged or inoperable. To report problems with mile or channel markers or buoys, call LCRA at 800-776-5272, ext. 4783.
  • Regulatory buoys on the Highland Lakes must have a permit from LCRA. For information, contact Ask LCRA.



Buoy Guide 




​The following are buoys and markers that all boaters on the Highland Lakes should be aware of: ​
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​Channel/Mile Markers
​Controlled area
This is a controlled area. No fishing, no anchoring. There may be water-skiers. Slow down so as to not create a wake.

Boaters keep out!
Written description of danger may be displayed outside crossed diamond, e.g., dam, water intake, swim area, or rapids.​

Written description of danger may be displayed outside the diamond shape, e.g., rocks, stumps, hazards or shallow areas.​
Green "can"-shaped buoy
Facing upstream, these green buoys are on the left. They have odd numbers, and may have a green light on top.​

Red "nun's cap"-shaped buoy
Facing upstream, these buoys, shaped like a nun's cap, are on the right. They have even numbers and may have a red light on top.​