Columbia Valley AVA
Location: The Columbia Valley AVA is a very large growing region with 11 million acres of land in total. Most of the Columbia Valley lies 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.
Wine history: On the Oregon side, the Columbia Valley wine history dates back to the early 1900s, when settlers planted the area’s first vineyard on a steep, southward-sloping hill near the small town of The Dalles. These Zinfandel vines, which are now more than 100 years old, still produce wine grapes at what is today known as The Pines 1852 Vineyard, whose vintner revitalized the land in the early 1980s. Around that time, as the Washington side of the Columbia Valley appellation began to flourish with large-scale wineries, reputable winemakers started tagging the small Oregon side as an excellent location for high-quality wine grapes. The appellation became official in 1984.
Climate: 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.
Soils: Roughly 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.
Topography: The Columbia Valley 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.