Tualatin Hills AVA

The Tualatin Hills AVA covers the hills surrounding the Tualatin River basin in Washington County, Oregon. The Tualatin River drains from the Coast Range east-southeast through Forest Grove, Hillsboro, and Beaverton before joining the Willamette River near Lake Oswego. The AVA captures the hills on the south, west, and north sides of this river basin, between the Coast Range foothills (west) and the Chehalem Mountains (south). Elevations within the AVA range from 200 feet on lower foothill sites to 1,000 feet on the highest ridges; vineyards concentrate on south-facing and southeast-facing slopes between 250 and 700 feet. The AVA is geographically diverse, with multiple separated hill complexes rather than a single coherent ridge system. The David Hill Winery site (Charles Coury's original 1965 planting) sits on the southwest portion; Tualatin Estate Vineyards (1973) sits on the central north portion; Kramer Vineyards and other anchors are distributed across the AVA boundary. The AVA shares boundaries with the Laurelwood District AVA (designated the same day in 2020) immediately to the south, the Chehalem Mountains AVA further south and southeast, and unincorporated agricultural land to the west and north. The Forest Grove-Hillsboro corridor's urban development on the valley floor leaves the surrounding hills as a relatively contiguous wine country corridor, though more residential and agricultural mixed-use than the more wine-focused Yamhill County to the south.

• Location: hills surrounding the Tualatin River basin in Washington County, OR; west of Forest Grove, north of the Chehalem Mountains, east of Coast Range foothills
• Geographic structure: multiple separated hill complexes rather than a single coherent ridge system; vineyards distributed across AVA boundary
• Elevations 200-1,000 feet; vineyards concentrated on south-facing + southeast-facing slopes 250-700 feet
• Shares boundaries with Laurelwood District AVA (south, designated same day 2020), Chehalem Mountains AVA (further south), and unincorporated agricultural land (west/north)

Tualatin Hills' soil composition mixes three major series. Laurelwood loess (windblown silt of glacial origin overlying weathered Columbia River Basalt Group bedrock) dominates higher elevations and northern flanks; Willakenzie marine sedimentary uplift (sandstone-shale-siltstone, Eocene-Miocene) occurs on lower and western slopes; Cornelius series (a sedimentary soil specific to the Tualatin basin) occurs in patches. The soil mix overlaps with the neighboring Laurelwood District AVA, and several producers operate across both AVAs. The Laurelwood loess sites carry the same silky-textural-mid-palate signature found in the Laurelwood District AVA: loess imparts a distinctive textural quality to wines (silky, dusty, powdery in tasters' descriptions) layered over iron-mineral foundation from the basalt sub-layer. The Willakenzie marine sedimentary sites carry the structural-darker-fruit signature found in Yamhill-Carlton and Ribbon Ridge AVAs to the south. The Cornelius series sites contribute a middle character with moderate vigor and well-drained sedimentary structure. The soil mix means that Tualatin Hills wines vary in character based on which soil type the fruit came from. Tualatin Estate Vineyards' original 1973 planting sits on a Willakenzie-and-Cornelius site that produces structured Pinot Noir; David Hill Winery's Coury Block sits on Laurelwood loess that produces silky textural Pinot Noir; Kramer Vineyards spans both soil types within its estate. Producers organize their winemaking and blending decisions around the specific soil profile of each block.

• Mixed soil composition: Laurelwood loess (windblown silt over CRBG basalt) dominant on higher elevations + northern flanks; Willakenzie marine sedimentary on lower + western slopes; Cornelius series in patches
• Soil overlap with Laurelwood District AVA (immediately south): several producers operate across both AVAs
• Laurelwood loess sites: silky/dusty textural mid-palate (loess signature) + iron-mineral foundation (basalt signature); same character as Laurelwood District AVA
• Willakenzie marine sedimentary sites: structural-darker-fruit signature similar to Yamhill-Carlton + Ribbon Ridge to the south; producer winemaking organized around soil-type within estates

Pinot Noir defines Tualatin Hills (about 70 percent of plantings), followed by Pinot Gris (about 12 percent), Chardonnay (about 8 percent), Riesling (about 5 percent), and small Pinot Blanc, Müller-Thurgau, Gewürztraminer, and experimental variety plantings. The AVA shows a slightly higher Riesling and Müller-Thurgau acreage than other Willamette sub-AVAs, reflecting the legacy of Charles Coury's 1965 plantings at the David Hill site which included experimental cool-climate varieties. The AVA's stylistic identity rests on its 50-year continuous Pinot Noir history. Tualatin Estate Vineyards (Bill Fuller and Bill Malkmus, planted 1973, 50+ years continuous) demonstrates the long-term aging arc of Tualatin Hills Pinot Noir: older Tualatin Estate Reserve bottlings from 1980s vintages have aged well into the 2010s, providing rare documentation of Willamette Pinot Noir's true longevity potential. Fuller and Malkmus sold Tualatin Estate to Willamette Valley Vineyards in 1997, but the original 1973 vineyard continues to produce. The David Hill Winery site (Charles Coury, planted 1965) gives the AVA an additional historical primacy claim: Coury's 1965 planting predates David Lett's Eyrie 1965 Dundee planting by a few months, though Coury's commercial success was less than Lett's. Coury planted Pinot Noir alongside Riesling, Müller-Thurgau, and other cool-climate experimental varieties; some original Coury vines reportedly still produce at David Hill, making the property home to the oldest continuously producing Pinot Noir vines in Oregon. Modern Tualatin Hills Pinot Noir style varies by soil and producer. Laurelwood-loess sites produce silky-textured wines; Willakenzie-sedimentary sites produce structured darker-fruit wines; the average AVA wine sits between Dundee Hills' Côte de Nuits-leaning red-fruit register and Yamhill-Carlton's Côte de Beaune-leaning dark-fruit register. Kramer Vineyards, Plum Hill, Apolloni (also Laurelwood District), and several smaller estates round out the cohort.

• Variety map: Pinot Noir ~70 percent, Pinot Gris ~12 percent, Chardonnay ~8 percent, Riesling ~5 percent (slightly higher than other Willamette sub-AVAs), small Müller-Thurgau/Gewürztraminer/Pinot Blanc/experimental plantings
• 50-year continuity: Tualatin Estate Vineyards (Fuller + Malkmus, 1973) the senior continuous vineyard; documents long-term aging arc of Tualatin Hills Pinot Noir
• Historical primacy: David Hill Winery on Charles Coury 1965 site (predates Eyrie 1965 by months); some original Coury vines reportedly still producing, the oldest continuously producing Pinot Noir in Oregon
• Stylistic range: soil-driven; Laurelwood-loess sites silky-textured, Willakenzie-sedimentary sites darker-structured; average AVA sits between Dundee Hills and Yamhill-Carlton register

Charles Coury planted his Forest Grove vineyard in 1965, the same year David Lett planted Eyrie in Dundee Hills. Coury's site sat on Laurelwood loess in what would later become both the Laurelwood District and Tualatin Hills AVAs (the David Hill Winery site sits at the boundary between the two). Coury planted Pinot Noir alongside Riesling, Müller-Thurgau, Sylvaner, and other cool-climate experimental varieties; he believed Oregon would prove most suited to the German-Alsatian cool-climate aromatic varieties rather than the French Pinot Noir + Chardonnay combination. Coury's commercial vision lost out to Lett's Eyrie success, but his vineyard's Pinot Noir plantings continued under successive ownership (Reuter's Hill in the 1970s-80s, David Hill since 1992 under Milan and Jean Stoyanov). Bill Fuller and Bill Malkmus planted Tualatin Estate Vineyards in 1973 north of Forest Grove, intentionally building scale. Tualatin Estate quickly became one of the largest Pinot Noir plantings in 1970s Oregon at about 85 acres, producing wines that won critical acclaim and demonstrated that Willamette Pinot Noir could compete at commercial scale. Fuller served as winemaker through the 1980s; Tualatin Estate's Reserve bottlings from the 1980s remain reference points for understanding Willamette Pinot Noir's long-term aging trajectory. Trudy Kramer planted Kramer Vineyards in 1984 on Laurelwood loess hills near Gaston, becoming one of the earliest women-led Willamette wineries; daughter Kim Kramer joined as winemaker in the 2000s. Apolloni Vineyards (Alfredo Apolloni, founded 1999) brings Italian-immigrant sensibility to the AVA. Plum Hill Vineyards (founded 2008), Patton Valley Vineyard (1997), Helvetia Vineyards (1989), and David Hill Winery (1992, on the Coury site) round out the senior cohort. The Tualatin Hills AVA designation in June 2020 followed a multi-year petition process. The case for separate designation emphasized the AVA's geographic distinctness (the Tualatin River basin's hill complex is geographically separated from the Chehalem Mountains by the Tualatin valley) and the 50+ year continuous vineyard history that demonstrated the AVA's mature identity. The same-day designation of Laurelwood District AVA (also 2020) created some overlap in producer programs but formally recognized two distinct soil-and-geographic identities within the northern Willamette.

• Charles Coury plants Forest Grove vineyard 1965 (same year as Eyrie); David Hill Winery site preserves the original planting (now under Milan + Jean Stoyanov since 1992)
• Tualatin Estate Vineyards (Bill Fuller + Bill Malkmus, planted 1973): senior continuous Tualatin Hills planting; 85-acre original scale demonstrated commercial Willamette Pinot Noir capacity
• Modern anchors: Kramer Vineyards (Trudy Kramer, 1984, women-led; Kim Kramer winemaker 2000s); Apolloni Vineyards (Alfredo Apolloni, 1999, Italian-immigrant); Plum Hill (2008); Helvetia Vineyards (1989)
• AVA designation June 2020 alongside Laurelwood District: emphasized Tualatin River basin's geographic distinctness from Chehalem Mountains and 50+ year continuous vineyard history