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Columbia Valley AVA
Encompassing more than a quarter of the state, the Columbia Valley is by far Washington’s largest growing region at over 11 million acres. It is home to over 99% of all of Washington’s vinifera acreage.
The Columbia Valley lies in the rain shadow of the Cascade Mountain range. The low desert region has an arid and semi-arid, continental climate with limited rainfall. Irrigation is therefore required to grow vinifera grapes. However, the Columbia River which cuts through the appellation is one of the largest rivers in the country. This river and its tributaries, along with aquifers, provides ample water for grape growing.
The use of irrigation, along with consistently warm, dry temperatures during the growing season, provides growers with a high amount of control over grape development compared to many other regions of the world. This leads to a smaller range of vintage variation and consistently high-quality wines.
Columbia Valley Blocks
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