American Viticultural Areas, or AVAs, are geographical wine grape growing regions in the United States. Their boundaries are defined by the Alcohol and Tobacco Tax and Trade Bureau (TTB) and established at the request of wineries or other petitioners.
AVAs located entirely within the State of Oregon are the Willamette Valley AVA (with 6 nested-AVAs) and the Southern Oregon AVA with (5 nested-AVAs). Parts of the Columbia Gorge, Columbia Valley, and Snake River Valley AVAs lie within Oregon.
Pinot Noir and Pinot Gris are the top two grapes grown.