The AVA was established by the Bureau of Alcohol, Tobacco and Firearms (ATF), Treasury on January 3, 1984 after reviewing the petition submitted by Mr. David B. Adelsheim, Chairman, Appellation Committee, Oregon Winegrowers Association, and owner of Adelsheim Vineyards, proposing a viticultural area in northwest Oregon, as part of the Willamette River Basin, to be known as "Willamette Valley.

[4] Although not officially recognized, many wine connoisseurs further define the Willamette Valley into northern and southern regions with the demarcation being the latitude of Salem (approximately 45° north).

The Chehalem Mountains AVA, established in 2006, stretches 20 miles (32 km) from Wilsonville in the southeast to Forest Grove in the northwest.

[11] [12] The Eola-Amity Hills AVA stretches from the town of Amity in the north to Salem in the south within Polk and Yamhill Counties.

The Eola-Amity Hills area benefits from steady winds off the Pacific Ocean that reach the Willamette Valley through the Van Duzer corridor, a gap in the Oregon Coast Range, moderating the summer temperatures.

It is located in the southern Willamette Valley in Lane and Benton Counties, near the towns of Junction City and Monroe.

It was established on June 3, 2022 by the Alcohol and Tobacco Tax and Trade Bureau (TTB), Treasury as the state's 23rd and 11th appellation in the Willamette Valley.

The viticultural area surrounds Mount Pisgah (Hebrew: פִּסְגָּה, pisgá: literally means "summit"), formed 65 million years ago as a sea floor volcano, covered by marine sediment and pushed up out of the ocean, among the hills of the Willamette Valley rising 260 to 835 feet (79–255 m) from the foothills to its peak.

To the south and southeast are the Chehalem Mountains, which includes elevations of over 1,000 feet (305 m), are considered to be a separate, distinct landform from the Tualatin Hills.

[14] Van Duzer Corridor is located in Polk County just west of Eola-Amity Hills AVA encompassing approximately 59,871 acres (94 sq mi).

The AVA is known for its low elevations, gently rolling hills, cool breezes from the Pacific Ocean and soils which are primarily uplifted marine sedimentary loams and silts with alluvial overlay.

The AVA includes over 1,200 acres (486 ha) of vineyard, and the region is in the rain shadow of the 3,500 feet (1,100 m) Oregon Coast Range, a short distance to the west.