9 AVAs in Washington, with 3 overlapping Oregon
Arid climate requiring irrigation
Cascade Mountains provide rain shadow effect
Reputation built on Cab, Merlot and Bordeaux blends
Syrah on the rise
Willamette Reserve Merlot – $100+ a bottle

How does the Columbia River majorly benefit Washington state in terms of grape growing?
Washington State relies on the Columbia River for irrigation

Washington AVAs (9)
Columbia Gorge
Columbia Valley
Horse Heaven Hills
Rattlesnake Hills
Red Mountain
Wahluke Slope
Walla Walla Valley
Yakima Slope
Puget Sound

Subappellations in Columbia Valley AVA
Red Mountain AVA
Wahluke Slope AVA
Yakima Valley AVA
Walla Walla Valley AVA
Horse Heaven Hills AVA
Rattlesnake Hills AVA

Puget Sound