Chehalem Mountains AVAThe Chehalem Mountains AVA is an American Viticultural Area (AVA) located in the Yamhill and Washington counties of northwestern Oregon. It contains two sub-regions, Laurelwood District AVA and Ribbon Ridge AVA.HistoryThe petition process for the creation of the Chehalem Mountains AVA began in 2001 and was led by David Adelsheim of Adelsheim Vineyard. The AVA was officially established in 2006.GeographyThe Chehalem Mountains AVA corresponds to the Chehalem Mountains and is entirely contained within the Willamette Valley AVA. The region stretches from Northwest of Wilsonville in the southeast to Forest Grove in the northwest featuring the elevations of Ribbon Ridge, Parrett Mountain and Bald Peak.