On November 13, 1999, The State of Michigan formally dedicated the Southwest Michigan Underwater Preserve as the tenth preserve in Michigan waters. The preserve boundaries range from just north of Holland, Michigan south along the southeast shore of Lake Michigan to Bridgman. The preserve extends from the shoreline to the 130 foot depth contour, or five miles offshore, whichever is closest to the shoreline. The preserve encompasses communities such as New Buffalo, St. Joseph, Benton Harbor, South Haven, Douglas, Saugatuck and Holland. There are numerous shipwrecks in the preserve area as well as geological formations including clay banks and underwater rock piles.