The Columbia Valley AVA is a very large growing region with 11 million acres of land in total. Most of Columbia Valley and its six sub-appellations lie in Washington State, with a small section in Oregon stretching from The Dalles to Milton-Freewater. The region is 185 miles wide and 200 miles long.
50 wineries, 29,000 vineyard acres
The Columbia Valley has a largely Continental High Desert Climate. The hot days promote slow, even ripening, while the cool nights ensure that grapes retain their natural acidity. The area receives just 6 to 8 inches of annual rainfall, making supplemental irrigation a necessity throughout the region.
About 15,000 years ago a series of tremendous ice age floods (dubbed the Missoula Floods) deposited silt and sand over the area. These deposited sediments, along with wind-blown loess sediment, make up the area's present-day soils, which are well drained and ideal for grapevines.
This is a huge area covering 11 million acres. Mostly, the Columbia Valley lies on the Columbia River Plateau and encompasses the valleys formed by the Columbia River and its tributaries, including the Walla Walla, Snake and Yakima rivers. Mountain ranges border the Columbia Valley region on the west and north, while the Columbia River acts roughly as a boundary to the south, and the Snake River near Idaho acts as the border to the east.
Merlot, Cabernet Sauvignon, Chardonnay, Sauvignon blanc, Riesling, Gewurztraminer, Semillon, Pinot gris, Chenin blanc, Syrah