Wahluke Slope is an American Viticultural Area (AVA) located within Grant County, Washington. It was established on January 6, 2006, by the Alcohol and Tobacco Tax and Trade Bureau (TTB), Treasury after reviewing the petition submitted by the Wahluke Slope Wine Grape Growers Association (WSWGGA), represented by Alan J. Busacca, Ph.D., proposing the establishment of the viticultural area named "Wahluke Slope."