Diving Regulations in Oklahoma

Persons engaging in snorkeling or scuba diving in Oklahoma must display a “diver-down” flag to mark their diving area. Vessels not engaged in diving operations must remain at least 150 feet from the “diver-down” flag, except in the case of an emergency.

The “diver-down” flags are:

• A rectangular red flag, at least 20” by 24”, with a four-inch white diagonal strip. The flag may be attached to a vessel, float or buoy and must have a light attached if used between sunset and sunrise.
• A blue and white International Code Flag A (or Alpha Flag) if on federally-controlled or international waters.

A diver-down flag may not be closer than 100 yards to any functional boat ramp.