At the beach
All state parks with designated swim areas use the flag-warning system. Beachgoers should check the flags when they arrive and be aware of what each color means. They should also check the warning system throughout their stay; wave and current conditions can change quickly.
Red = STOP. Stay out of the water and on the beach.
Yellow = CAUTION. Watch for dangerous conditions and high waves.
Green = LOW. Swim or wade but remain aware of changing water conditions.