Napa Valley Appellations
Appellations, Geography, Soils, and Climate...
During the early decades of winemaking in the Napa Valley, grapes were often planted in patchwork pattern vineyards in which many varieties were mixed. But experience has since shown the wisdom of matching grapes with locations whose microclimates and soils are best suited to particular grape varieties.
Within the Napa Valley, regions have emerged that possess distinct microclimates and terrains, imprinting recognizable characteristics on the grapes grown within them.
Vintners and growers within these regions delineate the boundaries of these growing areas, giving them names that reflect their regional designations, or appellations.
Data supporting a proposed American Viticultural Area, or AVA, is submitted to the government, which decides whether the proposed appellation designation will be granted.
The Napa Valley is itself an appellation. Within the Napa Valley appellation exists 15 subappellations, or AVAs, including: Atlas Peak, Calistoga, Chiles Valley District, Diamond Mountain District, Howell Mountain, Los Carneros, Mt. Veeder, Oakville, Rutherford, St. Helena, Spring Mountain District, Stags Leap District, Yountville, Wild Horse Valley and Oak Knoll District of Napa Valley.
Napa Vintners Release Findings of Climate Study
February 3, 2011
2/3/2011 - St Helena, CA--The Napa Valley Vintners (NVV) non-profit trade association announced today the release of the Napa Valley-specific climate study titled Climate and Phenology in Napa Valley: A Compilation and Analysis of Historical Data by Dr. Daniel R. Cayan, Dr. Kimberly Nicholas, Mary Tyree, and Dr. Michael Dettinger.
» Read the full Press Release