Scuba Center | Dive Flag Regulations | Minnesota | Wisconsin
Scuba Center has been selling quality scuba diving and snorkeling equipment since 1973. You will find a wide selection of scuba and snorkeling equipment at both our Eagan, Minnesota and Minneapolis, Minnesota locations. Scuba Center Eagan
1571 Century Point
Eagan, Minnesota 55121
(651) 681-8434
Scuba Center Minneapolis
5015 Penn Ave South
Minneapolis, Minnesota 55419
(612) 925-4818


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Minnesota Dive Flag Regulations Dive flag laws |

(As provided in the Minnesota Boating Guide)

  • Scuba divers must display a warning flag when diving.

  • The diverís flag must measure at least 15 inches horizontally and 12 inches vertically. Both sides must have a red-colored back-ground bisected diagonally by a three-inch wide white stripe. There is also a blue and white diverís flag authorized under the federal rules of the road.

  • No more than four divers shall dive under one flag.

  • Divers must remain within 50 feet (measured horizontally) of the warning flag.

  • If a group of divers is using a contained area, the perimeter of the area must be marked. The area must be outside the normal area of navigation. These markings must consist of the official diverís flag and must be placed around the perimeter of the diving area at intervals of not more than 150 feet. Do not place a diverís flag where it will obstruct navigation.

  • The diverís flag may be displayed on a water-craft or float or be anchored to the bottom. The top of the flag must be at least 30 inches above the surface, however.

  • Boats not involved with the diving operation must remain 150 feet away from a flag.

  • Persons who dive at any time from sunset to sunrise must carry a diverís light visible when above the water for a distance of 150 feet.

  • Scuba or skin diving while in possession of a spear is unlawful from sunset to sunrise.

Minnesota Dive Flag Regulations

Local diving in Minnesota and Wisconsin Wisconsin Dive Flag Regulations Local diving in Minnesota and Wisconsin

(As provided in the Wisconsin Boating Laws and Responsibilities Guide)

  • Persons participating in scuba diving, skin diving, snorkeling, or underwater spearfishing must use a divers flag to mark the diving area, even when they are within 150 feet of shore.

  • A diver must stay within 50 feet of the flag on federal waters.

  • Except in the case of an emergency, a diver may not surface more than 50 feet from the flag on any waters.

  • It is unlawful to display a diver-down flag when not diving.

  • Vessels not engaged in diving operations must stay at least 100 feet away from any displayed diver-down flag.

  • Two types of flags are used to indicate diving activity:

Wisconsin Dive Flag Regulations