(a)Name. The name of the viticultural area described in this section is "Fennville."(b)Approved maps. The appropriate maps for determining the boundaries of the Fennville Viticultural Area are three U.S.G.S. maps. They are entitled: (1) "Fennville Quadrangle, Michigan-Allegan County," 15 minute series;(2) "Bangor Quadrangle, Michigan," 15 minute series; and(3) "South Haven Quadrangle, Michigan," 15 minute series.(c)Boundaries. The Fennville viticultural area is primarily located in the southwestern portion of Allegan County, Michigan, with a small finger extending into the northwest corner of Van Buren County, Michigan. (1) The western boundary is the eastern shore of Lake Michigan, extending from the Black River, at the City of South Haven, north to the Kalamazoo River.(2) The northern boundary is the Kalamazoo River, extending easterly from Lake Michigan to 86°5' west longitude.(3) The eastern boundary is the 86°5' west longitude meridian, extending from the Kalamazoo River to the intersection of the Middle Fork of the Black River.(4) The southern boundary is the Middle Fork of the Black River extending westerly from 86°5' west longitude until it joins the Black River, continuing west along the Black River to the eastern shore of Lake Michigan.T.D. ATF-91, 46 FR 46320, 9/18/1981