Established in 2005
- Naturally bounded on the north by the Yakima Valley appellation and on the south by the Columbia River.
- Located in Southeast Washington - total area is 570,000 acres (230,679 hectares) of which about 10,130 acres (4,099 hectares) are planted to grapes, representing 25% of Washington's total grape production.
- Primary grape varieties: Cabernet Sauvignon, Merlot, Chardonnay, Riesling, and Syrah with 37 total varieties planted.
- Proximity to the Columbia River creates 30% more wind while moderating temperature extremes, providing steep south-facing slopes for optimum vineyard locations and providing well-drained, sandy-loam soils.
- Elevations range from 1,800 feet at the area's northern boundary to 300 feet at its southern.
- Outstanding sites that have been developed in this area include Alder Ridge, Andrews-Horse Heaven Vineyard, Canoe Ridge, Champoux Vineyards and Wallula Gap Vineyard.
- Growers have raised grapes in the Horse Heaven Hills region since 1972.
- There are at least 25 vineyards and 6 commercial wineries with 1 tasting room within the region.
- Proud source of the 1st, 2nd & 3rd "100 point" wines in the State of Washington.