Name. The name of the viticultural area described in this section is “Napa Valley.”
Approved maps. The maps showing the boundaries of the Napa Valley viticultural area are the:
“Mt. St. Helena” U.S.G.S. 7.5 minute quadrangle;
“Detert Reservoir” U.S.G.S. 7.5 minute quadrangle;
“St. Helena” U.S.G.S. 15 minute quadrangle;
“Jericho Valley” U.S.G.S. 7.5 minute quadrangle;
“Lake Berryessa” U.S.G.S. 15 minute quadrangle;
“Mt. Vaca” U.S.G.S. 15 minute quadrangle;
“Cordelia” U.S.G.S. 7.5 minute quadrangle;
“Cuttings Wharf” U.S.G.S. 7.5 minute quadrangle; and
Appropriate Napa County tax assessor's maps showing the Napa County-Sonoma County line.
Boundaries. The Napa Valley viticultural area is located within Napa County, California. From the beginning point at the conjuction of the Napa County-Sonoma County line and the Napa County-Lake County line, the boundary runs along—
The Napa County-Lake County line;
Putah Creek and the western and southern shores of Lake Berryessa;
The Napa County-Solano County line; and
The Napa County-Sonoma County line to the beginning point.