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It's the Law

Diver-Down Flags

Scuba divers and snorkelers must display a diver-down flag to mark their diving areas. The flag must be displayed whenever someone is diving below the surface.

Vessels should stay as far away from a diver-down flag as is reasonable and prudent for the circumstances. The suggested safe distance from a flag is 100 yards.

Divers Flag

A rectangular red flag with a white diagonal stripe is used on Arizona waters, including the Colorado River and Lake System.

Alfa Flag

A blue-and-white International Code Flag A (or Alfa flag) is used on federally controlled waters.

Divers and Alfa flags
Divers and Alfa flags