Oregon wineries are generally small and decentralized within each official wine region of the state. They are often winemaker- or family-owned. Most Oregon wine regions lie in valleys between the southern Cascade Mountains that run through the state and its Coastal Range to the west. The northwest portion of Oregon is celebrated for its cool-climate grape varieties, including Pinot Gris, Riesling, Chardonnay, and especially Pinot noir. The Southern Oregon appellation (AVA), starting south of Eugene, includes the Umpqua Valley AVA, the Applegate Valley AVA and the Rogue Valley AVA, all located in the southwestern portion of the state. These regions, along the vineyards of the Columbia Gorge AVA, are generally higher, much warmer and significantly drier than those appellations in the northwestern quadrant of Oregon State including the Willamette Valley AVA.