| Yakima Valley | Columbia Valley | Walla Walla Valley | Puget Sound | Red Mountain | Columbia Gorge | Horse Heaven Hills | Wahluke Slope | Rattlesnake Hills | Snipes Mountain | Lake Chelan |
- Includes the land surrounding Red Mountain in Benton County, Washington (Located between Benton City and Richland)
- Located on the eastern edge of the Yakima Valley, facing Southwest near the Yakima River
- Part of the Yakima Valley AVA, which is part of the larger Columbia Valley AVA
- Primary grape varieties planted include Cabernet Sauvignon, Merlot, Cabernet Franc, Syrah, Sangiovese, Malbec, and Petit Verdot
- The vineyards in this appellation produce grapes for some of the most sought after wines in Washington State and given this region worldwide acclaim
- The red color in the name comes from the dark red springtime hue of the drooping brome or “cheatgrass” in the area
- The soil in the area is very gravelly, with high alkalinity (high pH) and calcium carbonate content
- These low fertile soils limit vigor and yield with the berry sizes are up to 60% smaller than what is normal for the variety
- This results in powerful tannic red wines with concentrated fruit flavors (but more structured than fruit driven compared to the rest of the state)
- Very unusual terroirs with the southwest facing slopes documenting warmer temperatures and more sunlight hours than any other part of the Columbia Valley AVA
- The desert climate has an average yearly rainfall of five inches
- During the growing season, daytime temperatures average 90 °F (32 °C) with nighttime temperatures dropping below 50 °F (10 °C)
- This nighttime temperature drop helps to preserve the acid levels within the grape