The Columbia Valley wine region is located in the Pacific Northwest of the United States, primarily in Washington state. It is known for its diverse climate and geography, which create ideal conditions for growing a variety of grape varieties, including Cabernet Sauvignon, Merlot, and Chardonnay. The region spans over 99,000 acres of vineyards, making it one of the largest wine-producing areas in the country. The Columbia Valley benefits from warm summers and cool nights, allowing grapes to ripen fully while retaining their acidity. The region is home to several AVAs (American Viticultural Areas), such as Walla Walla Valley and Yakima Valley, each offering unique terroirs that contribute to the distinct flavors of the wines produced there.