California is by far the most important wine region in the USA. 154 of the 279 American Viticultural Areas, or AVAs, are found in California. Over 80% of wines produced in the USA are made in California. It’s important to understand that wines are made in all 50 states, but it’s equally important to appreciate California’s dominance.
California is filled with diverse and distinctive climates and microclimates. In recent decades, winemakers here have better utilized this diversity by matching grapes to AVAs (appellations) to produce superior wines. While roughly one-quarter of all California wines are varietally labeled Cabernet Sauvignon, it’s vital to recognize that some zones are just awful for growing Cabernet while others are absolutely world-class.
California Wine AVAs
Central Coast
Adelaida District (San Luis Obispo) — A high-elevation (900–2,200 ft) western Paso Robles AVA on Santa Lucia Range slopes with shallow calcareous soils from the Monterey Formation; it produces structured Cabernet Sauvignon and Bordeaux varieties with freshness from cooler marine-influenced air.
Alisos Canyon (Santa Barbara) — A newer, small AVA near Los Alamos in Santa Barbara County with distinct microclimates and soils; it supports Rhône-style varieties like Syrah alongside other reds in a compact, terroir-driven setting.
Arroyo Grande Valley (San Luis Obispo) — A cool, fog-influenced coastal AVA in southern San Luis Obispo County with marine breezes and varied soils; it excels in elegant Pinot Noir, Chardonnay, and cool-climate whites with bright acidity.
Arroyo Seco (Monterey) — A cool-climate AVA influenced by strong Monterey Bay winds, fog, and a narrow gorge opening to the Salinas Valley with rocky, well-drained soils; it is prized for Chardonnay and Pinot Noir that benefit from extended hang time.
Ballard Canyon (Santa Barbara) — A fog- and wind-swept canyon AVA within Santa Ynez Valley featuring moderate temperatures and diurnal shifts; it is renowned for Rhône varieties, especially Syrah, with concentrated yet balanced flavors.
Carmel Valley (Monterey) — A coastal AVA closest to the Pacific in Monterey County with moderate temperatures moderated by ocean breezes; it produces Cabernet Sauvignon, Merlot, and Chardonnay on varied valley and hillside terrains.
Central Coast (Alameda; Contra Costa; Monterey; San Benito; San Francisco; San Luis Obispo; San Mateo; Santa Barbara; Santa Clara; Santa Cruz) — The parent AVA of 45 distinct AVAs in California’s Central Coast.
Chalone (Monterey; San Benito) — A high-elevation (around 1,800 ft) AVA in the Gabilan Mountains with rare limestone and decomposed granite soils comparable to Burgundy; it yields complex, age-worthy Pinot Noir and Chardonnay.
Cienega Valley (San Benito) — A San Benito County AVA with varied soils and cooler inland microclimates; it supports quality viticulture for Pinot Noir, Chardonnay, and other varieties in a historic growing area.
Contra Costa (Contra Costa) — A warm AVA in Contra Costa County east of the San Francisco Bay with diverse soils including ancient river deposits; it is known for robust old-vine Zinfandel, Petite Sirah, and other Rhône and Bordeaux reds.
Creston District (San Luis Obispo) — An eastern Paso Robles AVA on an old erosional plateau (1,000–2,000 ft) with alluvial terraces and fans of Huerhuero Creek; warmer conditions favor full-bodied Cabernet Sauvignon, Zinfandel, and Rhône varieties.
Edna Valley (San Luis Obispo) — A cool, marine-influenced AVA south of San Luis Obispo with calcareous soils and strong fog; it is a benchmark for vibrant Chardonnay and Pinot Noir with high acidity and complex fruit.
El Pomar District (San Luis Obispo) — A Paso Robles AVA with rolling terrain and moderate elevations featuring alluvial and residual soils; it produces balanced reds and whites with distinctive structure from its unique microclimate.
Gabilan Mountains (Monterey; San Benito) — A high-elevation encompassing AVA in the Gabilan Range including Chalone and Mt. Harlan with limestone-rich soils; cooler mountain conditions support elegant Pinot Noir and Chardonnay.
Hames Valley (Monterey) — A small, warmer inland AVA in southern Monterey County with varied soils; it supports a range of grape varieties in a less-foggy setting distinct from coastal Monterey plantings.
Happy Canyon of Santa Barbara (Santa Barbara) — The warmest eastern sub-AVA of Santa Ynez Valley with reduced fog and higher daytime temperatures; it excels in Bordeaux varieties like Cabernet Sauvignon, Cabernet Franc, and Merlot.
Lamorinda (Contra Costa) — A small AVA in the Lamorinda area of Contra Costa County with moderate to warm microclimates and diverse soils; it focuses on Cabernet Sauvignon and other quality reds near the Bay Area.
Lime Kiln Valley (San Benito) — A San Benito AVA characterized by limestone-influenced soils and higher elevations in the Gabilan foothills; it produces distinctive wines with bright acidity and minerality.
Livermore Valley (Alameda; Contra Costa) — A historic AVA east of San Francisco Bay with warm days, cool nights, and gravelly, well-drained soils; it is famous for Cabernet Sauvignon, Sauvignon Blanc, and Merlot from pioneering vineyards.
Los Olivos District (Santa Barbara) — A central Santa Ynez Valley AVA with moderate climate transitioning between cool coastal and warmer inland influences; it grows elegant Rhône and Bordeaux varieties across varied terrains.
Monterey (Monterey) — A large, diverse AVA spanning much of Monterey County from cool coastal zones to warmer inland areas; it supports a wide range of grapes with Chardonnay and Pinot Noir prominent in cooler sections.
Mt. Harlan (San Benito) — A high-elevation AVA within the Gabilan Mountains featuring limestone and granite soils; it yields complex, Burgundian-style Pinot Noir and Chardonnay with notable structure.
Pacheco Pass (San Benito) — A San Benito AVA influenced by the windy Pacheco Pass corridor with unique microclimates; it supports distinctive viticulture adapted to its cooler, breezy conditions.
Paicines (San Benito) — A San Benito County AVA with volcanic and sedimentary soils in a cooler inland setting; it produces quality Pinot Noir, Chardonnay, and Rhône varieties.
Paso Robles (San Luis Obispo) — A vast AVA encompassing 11 sub-districts with Mediterranean climate, diverse soils, and temperature gradients; it is renowned for Rhône varieties, Zinfandel, Cabernet Sauvignon, and bold reds across warm to moderate zones.
Paso Robles Estrella District (San Luis Obispo) — A warmer eastern Paso Robles AVA with alluvial soils and higher daytime heat; it favors robust reds like Cabernet Sauvignon and Zinfandel with ripe fruit character.
Paso Robles Geneseo District (San Luis Obispo) — A Paso Robles sub-AVA defined by specific geology and moderate elevations; it produces structured wines with concentration from its distinctive terroir.
Paso Robles Highlands District (San Luis Obispo) — A higher-elevation Paso Robles AVA with varied topography and soils; it yields concentrated, flavorful reds benefiting from diurnal temperature swings.
Paso Robles Willow Creek District (San Luis Obispo) — A western Paso Robles AVA with marine influence via coastal gaps and varied soils; cooler conditions support balanced Cabernet Sauvignon, Syrah, and other reds.
San Antonio Valley (Monterey) — A Monterey AVA in a distinct valley setting with moderate to warm microclimates; it grows a range of varieties suited to its inland yet coastal-proximate location.
San Benito (San Benito) — A broad AVA encompassing much of San Benito County with diverse elevations and soils; it supports Pinot Noir, Chardonnay, and Rhône grapes in cooler mountain and valley sites.
San Bernabe (Monterey) — A large Monterey AVA with warmer inland conditions and varied soils; it is known for productive vineyards yielding quality reds and whites.
San Francisco Bay (Alameda; Contra Costa; San Benito; San Francisco; San Mateo; Santa Clara; Santa Cruz; Solano) — A massive encompassing AVA covering the greater Bay Area with highly diverse microclimates from cool coastal to warm inland; it grows nearly every major grape variety across historic and modern sites.
San Juan Creek (San Luis Obispo) — A Paso Robles sub-AVA influenced by San Juan Creek with specific alluvial soils and topography; it produces distinctive reds with balance from its microclimate.
San Lucas (Monterey) — An inland Monterey AVA with warmer conditions and varied terrain; it supports a range of grape varieties in the broader Central Coast landscape.
San Luis Obispo Coast (SLO Coast) (San Luis Obispo) — A cool maritime AVA along the San Luis Obispo coastline with strong fog, wind, and moderate temperatures (65–80°F); it excels in Pinot Noir and Chardonnay on Franciscan and marine-derived soils.
San Miguel District (San Luis Obispo) — A northern Paso Robles AVA with moderate to warm conditions and diverse soils; it favors Rhône and Bordeaux varieties with good structure.
San Ysidro District (Santa Clara) — A small AVA in Santa Clara County with unique local soils and microclimate; it supports quality viticulture in the South Bay region.
Santa Clara Valley (Alameda; San Benito; Santa Clara) — A historic AVA spanning the Santa Clara Valley (often called Silicon Valley) with gravelly soils and varied influences; it produces Cabernet Sauvignon and other reds from long-established vineyards.
Santa Lucia Highlands (Monterey) — An elevated benchland AVA on east-facing Santa Lucia Mountain slopes (50–1,650 ft) with long growing seasons and marine influence; it is a premier site for complex Pinot Noir and Chardonnay.
Santa Margarita Ranch (San Luis Obispo) — A Paso Robles sub-AVA with distinctive ranch topography and soils; it yields balanced, site-specific wines from varied elevations.
Santa Maria Valley (San Luis Obispo; Santa Barbara) — One of the coolest Central Coast AVAs with persistent marine fog, strong winds, and long hang time on ancient marine soils; it is iconic for elegant Pinot Noir and Chardonnay.
Santa Ynez Valley (Santa Barbara) — A large east-west AVA with a cool-to-warm gradient from Pacific influence; it grows diverse grapes from Pinot Noir and Chardonnay in the west to Cabernet and Rhône varieties eastward.
Sta. Rita Hills (Santa Barbara) — The coolest, windiest western sub-AVA of Santa Ynez Valley with intense marine fog and transverse valleys; it produces world-class Pinot Noir and Chardonnay with vibrant acidity.
Templeton Gap District (San Luis Obispo) — A Paso Robles AVA cooled by Pacific air through the Templeton Gap (700–1,800 ft) with alluvial terraces; it excels in elegant Cabernet Sauvignon, Syrah, and Rhône blends.
York Mountain (San Luis Obispo) — A high-elevation western Paso Robles AVA with cooler temperatures and rugged terrain; it is known for Zinfandel and other varieties with distinct mountain character.
Clarksburg
Clarksburg (Sacramento; Solano; Yolo) — A Delta-influenced AVA with deep, fertile peat and silty soils and strong cooling breezes; it excels in Chenin Blanc, Chardonnay, and Petite Sirah in the northern Central Valley.
Merritt Island (Yolo) — A Delta AVA on an island in the Sacramento-San Joaquin Delta with silty soils and strong breezes; it grows Chenin Blanc and other whites with bright acidity.
Lodi
Alta Mesa (Sacramento) — A flat, elevated mesa AVA in northern Sacramento County with deep sandy loam soils from ancient river deposits and strong cooling Delta breezes; it produces balanced Zinfandel, Cabernet Sauvignon, and other reds with ripe fruit and retained acidity in a warm yet moderated climate.
Borden Ranch (Sacramento; San Joaquin) — A rolling-hill AVA with varied volcanic-influenced and alluvial soils at moderate elevations; Delta breezes create significant diurnal shifts that support structured Cabernet Sauvignon, Merlot, Syrah, and Rhône varieties.
Clements Hills (San Joaquin) — A southeastern Lodi sub-AVA featuring gently rolling hills and heavier clay-loam soils; warmer daytime temperatures combined with afternoon Delta winds yield robust, concentrated Zinfandel and Rhône-style reds.
Cosumnes River (Sacramento) — A river-adjacent AVA along the Cosumnes River with sandy, well-drained soils; strong Delta influence provides cooling breezes ideal for elegant Zinfandel and white varieties in the northern reaches of the Lodi region.
Jahant (Sacramento; San Joaquin) — A small, distinctive AVA with ancient riverbed gravel and sandy loam soils; its unique microclimate supports high-quality Zinfandel, Cabernet Sauvignon, and other Bordeaux varieties with excellent structure.
Lodi (Sacramento; San Joaquin) — The large encompassing AVA for the entire Lodi region with diverse deep alluvial soils and a warm Mediterranean climate tempered by Sacramento-San Joaquin Delta breezes; it is world-famous for old-vine Zinfandel along with a broad range of premium grapes.
Mokelumne River (San Joaquin) — The historic heart of Lodi along the Mokelumne River with deep sandy soils and pronounced Delta cooling; legendary for century-old Zinfandel vineyards that produce concentrated yet balanced, age-worthy wines.
Sloughhouse (Sacramento) — A northeastern Lodi AVA at slightly higher elevations with sandy loam soils; cooler Delta breezes and longer hang time favor premium Cabernet Sauvignon, Merlot, and other reds with bright acidity and complexity.
Malibu Coast
Malibu Coast (Los Angeles; Ventura) — A cool, coastal AVA along the Malibu coastline with marine influence and varied soils; it excels in Pinot Noir, Chardonnay, and cool-climate varieties.
Malibu-Newton Canyon (Los Angeles) — A small canyon AVA in the Santa Monica Mountains with moderate marine influence; it produces Cabernet Sauvignon and Bordeaux varieties on steep slopes.
Saddle Rock-Malibu (Los Angeles) — A Malibu AVA with steep slopes and marine influence; it produces structured Cabernet Sauvignon and other reds on rocky terrain.
North Coast
Alexander Valley (Sonoma) — This warm inland valley in northern Sonoma County is known for structured yet elegant Cabernet Sauvignon with ripe fruit and balanced acidity, thanks to hot daytime temperatures moderated by evening fog from the Russian River. It also produces full-bodied Chardonnay and other Bordeaux varieties.
Anderson Valley (Mendocino) — A cool-climate region in Mendocino County renowned for sleek, powerful Pinot Noir and Chardonnay, with high-quality production driven by rising-star and established winemakers. Its foggy, coastal-influenced conditions support bright acidity and complex flavors.
Atlas Peak (Napa) — A high-elevation (760–2,600 ft) cool-mountain AVA on the Vaca Range with volcanic soils; it produces Cabernet Sauvignon and Chardonnay with bright acidity and expressive fruit due to cooler temperatures (10–15°F below the valley floor) and low diurnal variation.
Benmore Valley (Lake) — A small, high-elevation (2,400–2,700 ft) mountaintop valley in southwestern Lake County that is significantly cooler, foggier, and rainier than surrounding areas due to its proximity to the Pacific and volcanic soils. It supports limited but distinctive viticulture in a rugged setting.
Bennett Valley (Sonoma) — A small, moderately cool AVA with volcanic-laced clay soils and marine influences that extend hang time and preserve acidity; it excels in Merlot, Chardonnay, and cool-climate Cabernet Sauvignon, Cabernet Franc, and Syrah.
Big Valley District–Lake County (Lake) — A flat, bowl-shaped valley near Clear Lake with heavier clay soils and volcanic influences; it offers a cooler microclimate suited to a range of grapes in Lake County’s diverse terrain.
Calistoga (Napa) — One of Napa’s warmest AVAs with highly uniform volcanic soils and dramatic diurnal shifts (100°F+ days dropping to the 40s at night via Pacific breezes); it is prized for bold Cabernet Sauvignon, Zinfandel, Syrah, and Petite Sirah.
Chalk Hill (Sonoma) — A warmer sub-region within the Russian River Valley featuring chalky white volcanic ash soils and higher elevations; it produces mineral-driven Chardonnay, Sauvignon Blanc, and Cabernet Sauvignon.
Chiles Valley (Napa) — A small eastern-hills AVA with alluvial and marine-origin soils at 600–1,200 ft; warm days and very cool nights create a strong diurnal shift ideal for Bordeaux varieties like Cabernet Sauvignon, Merlot, and Cabernet Franc, plus old-vine Zinfandel.
Clear Lake (Lake) — Lake County’s central AVA surrounding Clear Lake with varied volcanic and sedimentary soils; its Mediterranean climate supports Cabernet Sauvignon and other reds in a region known for high-altitude viticulture.
Cole Ranch (Mendocino) — North America’s smallest AVA, a tiny high-sloping benchland in Mendocino County at up to 1,000 ft; it produces limited but distinctive grapes in an isolated setting.
Coombsville (Napa) — A southeastern Napa AVA moderated by San Pablo Bay proximity for cooler temperatures and less severe heat spikes; volcanic and alluvial soils support Cabernet Sauvignon, Merlot, Syrah, Pinot Noir, and Chardonnay.
Crystal Springs of Napa Valley (Napa) — A hillside AVA with steep volcanic ash soils (15–40% slopes) and high solar exposure at 400–1,400 ft; it excels in Cabernet Sauvignon, Merlot, Cabernet Franc, and Sauvignon Blanc.
Diamond Mountain District (Napa) — A northwestern mountain AVA with reddish volcanic soils rich in reflective glass shards at 400–2,200 ft; it produces structured, age-worthy Cabernet Sauvignon and Cabernet Franc with plush intensity.
Dry Creek Valley (Sonoma) — A compact valley known for powerful, old-vine Zinfandel and Cabernet Sauvignon on varied benchlands and hillsides; it also grows Rhône and Bordeaux varieties with great concentration.
Eagle Peak Mendocino County (Mendocino) — A mountainous AVA in the Coastal Range west of Redwood Valley, named for nearby Eagle Peak; it features rugged terrain suited to distinctive Mendocino-style plantings.
Fort Ross-Seaview (Sonoma) — A high-elevation (above fog line), steep, coastal AVA in the western Sonoma Coast with extreme marine influence; it specializes in Pinot Noir and Chardonnay on rugged ridges.
Fountaingrove District (Sonoma) — A high-elevation (up to 2,000+ ft) hillside AVA in eastern Sonoma with marine influence through mountain gaps and volcanic soils; it focuses on Cabernet Sauvignon, Merlot, and Syrah.
Green Valley of Russian River Valley (Sonoma) — One of Sonoma’s coolest, foggiest AVAs with Goldridge soils; it consistently produces elegant Pinot Noir and Chardonnay with bright acidity and complex flavor.
Guenoc Valley (Lake) — A Lake County AVA with volcanic soils at lower-to-mid elevations; it benefits from the region’s high-altitude Mediterranean climate for quality reds and whites.
High Valley (Lake) — A higher-elevation Lake County AVA dominated by red volcanic soils; it produces concentrated grapes with good structure in a sunny, elevated setting.
Howell Mountain (Napa) — A prestigious mountain AVA above the fog line (1,400–2,600 ft) with shallow volcanic soils; it yields concentrated, “wild” Cabernet Sauvignon, Merlot, Zinfandel, and others with intense fruit and aging potential.
Kelsey Bench–Lake County (Lake) — A Lake County benchland AVA with distinctive terroir near Kelseyville; it features volcanic influences and varied microclimates for Lake County’s signature varieties.
Knights Valley (Sonoma) — A remote, warm AVA nestled against Mt. St. Helena with mineral-rich volcanic soils; it excels in regal Cabernet Sauvignon and other mountain-influenced reds.
Long Valley-Lake County (Lake) — A newer (2023) narrow valley-floor AVA in eastern Lake County at ~1,300 ft with surrounding foothills and volcanic soils; it offers medium-elevation conditions distinct from nearby areas.
Los Carneros (Napa; Sonoma) — A cool-climate AVA straddling Napa and Sonoma, defined by San Pablo Bay winds and fog; it is famous for elegant Pinot Noir, Chardonnay, and sparkling wines on clay-dominated soils.
McDowell Valley (Mendocino) — A high-sloping benchland AVA in Mendocino County (up to 1,000 ft) established in 1987; it supports Mediterranean-climate grapes in an upland setting.
Mendocino (Mendocino) — A broad AVA encompassing much of Mendocino County with diverse climates; it is known for organic viticulture and varieties like Zinfandel, Syrah, and Petite Sirah.
Mendocino Ridge (Mendocino) — America’s only non-contiguous AVA, limited to elevations 1,200 ft and above; it features rugged ridge-top vineyards distinct from lower valleys.
Moon Mountain District Sonoma County (Sonoma) — A high-elevation (400–2,200 ft) AVA within Sonoma Valley with mountainous conditions and breezes; it produces structured Cabernet Sauvignon and other reds.
Mt. Veeder (Napa) — A steep, rugged Mayacamas mountain AVA (500–2,600 ft) with sedimentary soils and long growing seasons; it yields intensely concentrated Cabernet Sauvignon, Merlot, Zinfandel, and Chardonnay.
Napa Valley (Napa) — California’s original AVA (1981), encompassing 17 nested sub-AVAs with vast climatic and soil diversity across the valley and mountains; it is world-renowned for Cabernet Sauvignon and a wide range of premium wines.
North Coast (Lake; Marin; Mendocino; Napa; Solano; Sonoma) — The large parent AVA that includes 56 distinct AVAs.
Northern Sonoma (Sonoma) — A large encompassing AVA that includes multiple sub-AVAs (Alexander Valley, Dry Creek, etc.); it covers diverse terrains and nearly every grape variety grown in Sonoma County.
Oak Knoll District of Napa Valley (Napa) — A cooler southern Napa AVA with a large alluvial fan and varied soils; it produces elegant, perfumed Cabernet Sauvignon, Merlot, Chardonnay, and others with concentrated flavors.
Oakville (Napa) — A classic valley-floor AVA with gravelly soils and fog influence; it is legendary for world-class Cabernet Sauvignon and Merlot, home to iconic estates.
Petaluma Gap (Marin; Sonoma) — A cool, wind- and fog-swept AVA with strong coastal influence; it excels in Pinot Noir (dominant), Chardonnay, and Syrah on varied hillsides and valleys.
Pine Mountain-Cloverdale Peak (Mendocino; Sonoma) — A high-elevation (1,600–2,600 ft), steep mountainous AVA on the Sonoma-Mendocino border with rocky volcanic soils; it produces complex Cabernet Sauvignon and other reds above the fog line.
Potter Valley (Mendocino) — An upland AVA east of Redwood Valley, elevated over 200 ft above surroundings; it features cooler conditions suited to Mendocino’s diverse plantings.
Red Hills Lake County (Lake) — A Lake County AVA dominated by red volcanic hillside soils; it produces concentrated, high-quality grapes in a sunny, elevated Mediterranean climate.
Redwood Valley (Mendocino) — A cooler upland valley AVA where a coastal ridge gap allows Pacific air to penetrate; it supports distinctive cooler-climate viticulture.
Rockpile (Sonoma) — A rugged, high-elevation (up to 1,900 ft) AVA west of Lake Sonoma with rocky soils and intense sun exposure; it is known for concentrated, balanced Zinfandel and other reds.
Russian River Valley (Sonoma) — A cool, fog-intruded AVA along the Russian River with slow ripening; it is a benchmark for balanced, complex Pinot Noir and Chardonnay.
Rutherford (Napa) — A historic central valley-floor AVA with gravelly soils and fog moderation; it is famous for Cabernet Sauvignon, Merlot, and other Bordeaux varieties with classic structure.
Solano County Green Valley (Solano) — A Solano County AVA with cooler influences; it supports quality grape growing in the broader North Coast region.
Sonoma Coast (Sonoma) — Sonoma’s largest AVA with strong Pacific marine influence, high rainfall, and cool temperatures; it is prized for Pinot Noir and Chardonnay.
Sonoma Mountain (Sonoma) — A small, high-altitude AVA within Sonoma Valley with rocky soils and cooling overnight temperatures; it produces Cabernet Sauvignon, Pinot Noir, Chardonnay, and Zinfandel.
Sonoma Valley (Sonoma) — One of Sonoma’s oldest AVAs with historic winemaking tradition; it grows diverse varieties across varied terrains bordered by the Mayacamas and Sonoma Mountains.
Spring Mountain District (Napa) — A cool Mayacamas mountain AVA (600–2,600 ft) with varied soils; it yields complex, age-worthy Bordeaux varieties and others with intellectual depth.
St. Helena (Napa) — A warmer, historic central Napa AVA with significant vineyard acreage; it excels in Cabernet Sauvignon, Merlot, Syrah, Zinfandel, and Sauvignon Blanc.
Stags Leap District (Napa) — A distinctive “valley within a valley” AVA with unique soils and bay winds; it is renowned for elegant, structured Cabernet Sauvignon and Merlot.
Suisun Valley (Solano) — A Solano County AVA with its own microclimate in the North Coast; it supports a range of grape varieties in an under-the-radar setting.
Upper Lake Valley (Lake) — A Lake County AVA in the northern reaches with volcanic and varied soils; it benefits from the county’s high-elevation advantages for quality viticulture.
West Sonoma Coast (Sonoma) — A newer, cool maritime AVA with strong Pacific influence, fog, and wind; it produces exceptional Pinot Noir and Chardonnay in extreme coastal conditions.
Wild Horse Valley (Napa; Solano) — A cooler, higher-elevation AVA with shallow volcanic soils; it is known for Pinot Noir, Chardonnay, and Syrah in an obscure but distinctive terroir.
Yorkville Highlands (Mendocino) — A Mendocino AVA with distinctive rocky, high-gravel soils differing from neighboring loamy clays; it supports unique grape expressions in the highlands.
Yountville (Napa) — A moderate-climate AVA with diverse microclimates and soils; it produces excellent Cabernet Sauvignon, Merlot, and a wide range of varieties near the historic town.
Sierra Foothills
California Shenandoah Valley (Amador; El Dorado) — A warm Sierra Foothills AVA known for historic Zinfandel plantings on decomposed granite soils; it yields robust, jammy Zinfandel, Barbera, and Rhône varieties with excellent concentration.
El Dorado (El Dorado) — A large Sierra Foothills AVA with elevations up to 3,500 ft, volcanic and granite soils, and significant diurnal cooling; it excels in Rhône varieties, Zinfandel, and Barbera.
Fair Play (El Dorado) — A high-elevation (2,000–3,000 ft) sub-AVA of El Dorado with granite soils and cool nights; it yields structured Cabernet Sauvignon, Syrah, and Rhône blends with bright acidity.
Fiddletown (Amador) — A historic Sierra Foothills AVA with decomposed granite soils and warm days; it is renowned for old-vine Zinfandel and Italian varieties from the Gold Rush era.
North Yuba (Yuba) — A Sierra Foothills AVA with granite and volcanic soils at higher elevations; it produces elegant Cabernet Sauvignon, Syrah, and Zinfandel.
Sierra Foothills (Amador; Calaveras; El Dorado; Mariposa; Nevada; Placer; Tuolumne; Yuba) — A vast AVA stretching across eight counties in the Sierra Nevada foothills with granite and volcanic soils; it is iconic for Zinfandel, Rhône varieties, and Barbera at elevations up to 3,500 ft.
South Coast
Ramona Valley (San Diego) — A warm AVA in San Diego County with granite soils and Mediterranean climate; it excels in Rhône varieties, Cabernet Sauvignon, and Zinfandel.
San Luis Rey (San Diego) — A San Diego AVA with coastal influence and alluvial soils; it supports Rhône and Bordeaux varieties in a warm Mediterranean setting.
San Pasqual Valley (San Diego) — A historic San Diego AVA with granite-derived soils and warm days; it is known for Cabernet Sauvignon and Rhône blends.
South Coast (Orange; Riverside; San Bernardino; San Diego) — A large encompassing AVA covering Southern California’s coastal and inland areas with diverse microclimates; it grows a wide range of grapes from cool coastal to warm desert-influenced sites.
Temecula Valley (Riverside) — A warm AVA in Riverside County with marine influence from coastal gaps and decomposed granite soils; it is known for Rhône varieties, Sangiovese, and Cabernet Sauvignon.
Other AVA (no parent AVA)
Antelope Valley of the California High Desert (Kern; Los Angeles) — A high-desert AVA in the Antelope Valley with extreme diurnal swings, sandy soils, and very low rainfall; it supports warm-climate grapes like Syrah, Mourvèdre, and Viognier in a rugged, high-elevation setting.
Capay Valley (Yolo) — A small, warm inland AVA in Yolo County with alluvial soils and a Mediterranean climate moderated by coastal breezes; it grows Cabernet Sauvignon, Syrah, and other reds in a boutique setting.
Comptche (Mendocino) — A tiny, remote AVA in the Comptche area of Mendocino County with cool, foggy conditions and varied soils; it supports limited but distinctive cool-climate viticulture.
Covelo (Mendocino) — A small, isolated valley AVA in Mendocino County with cooler mountain influences and alluvial soils; it produces quality grapes in a rugged, high-elevation setting.
Cucamonga Valley (Riverside; San Bernardino) — A historic, warm inland AVA east of Los Angeles with sandy soils and ancient vineyards; it is famous for old-vine Zinfandel, Petite Sirah, and robust reds.
Diablo Grande (Stanislaus) — A warm AVA in Stanislaus County with rolling hills and varied soils; it supports Cabernet Sauvignon and other Bordeaux varieties in the Central Valley foothills.
Dos Rios (Mendocino) — A remote, high-elevation AVA in Mendocino County at the confluence of two rivers; it features cooler conditions and distinctive terroir for limited plantings.
Dunnigan Hills (Yolo) — A warm AVA in the Dunnigan Hills with gravelly loam soils and strong diurnal shifts; it produces Cabernet Sauvignon, Syrah, and Zinfandel with ripe fruit and structure.
Inwood Valley (Shasta) — A northern California AVA in Shasta County with volcanic soils and moderate climate; it supports a range of grapes in a less-developed viticultural area.
Leona Valley (Los Angeles) — A high-desert AVA in Los Angeles County with sandy soils and extreme diurnal temperature swings; it produces Rhône and Bordeaux varieties in a unique microclimate.
Madera (Fresno; Madera) — A warm Central Valley AVA with deep alluvial soils; it is known for high-volume production of Chardonnay, Cabernet Sauvignon, and fortified wines.
Manton Valley (Shasta; Tehama) — A northern AVA with volcanic soils and cooler mountain influences; it supports distinctive viticulture in the Shasta-Tehama region.
Palos Verdes Peninsula (Los Angeles) — A coastal AVA on the Palos Verdes Peninsula with marine breezes and varied soils; it supports cool-climate grapes in a scenic, urban-adjacent setting.
Paulsell Valley (Stanislaus) — A small AVA in Stanislaus County with rolling hills and alluvial soils; it yields quality reds in the Central Valley transition zone.
River Junction (San Joaquin) — A small AVA along the Stanislaus River with sandy loam soils; it supports warm-climate viticulture in the Central Valley.
Salado Creek (Stanislaus) — A Stanislaus County AVA with varied soils and moderate climate; it grows a range of grapes in the northern Central Valley.
Seiad Valley (Siskiyou) — A remote northern AVA in Siskiyou County with varied soils and cooler mountain climate; it supports limited but unique viticulture.
Sierra Pelona Valley (Los Angeles) — A high-desert AVA in Los Angeles County with sandy soils and extreme diurnal swings; it produces Rhône-style wines in a rugged setting.
Squaw Valley–Miramonte (Fresno) — A high-elevation AVA in Fresno County with granite soils and cool nights; it excels in Rhône and Italian varieties in the Sierra foothills.
Tehachapi Mountains (Kern) — A mountainous AVA in Kern County with varied elevations and soils; it supports cool-climate grapes in a transition zone between desert and Central Valley.
Tracy Hills (San Joaquin; Stanislaus) — A transitional AVA with rolling hills and alluvial soils; it produces quality reds in the northern Central Valley.
Trinity Lakes (Trinity) — A northern AVA near Trinity Lakes with cooler climate and varied soils; it supports distinctive mountain viticulture.
Willow Creek (Humboldt; Trinity) — A remote, cool-climate AVA in Humboldt and Trinity Counties with rugged terrain; it produces Pinot Noir and Chardonnay in a highly forested area.
Winters Highlands (Solano; Yolo) — A warm AVA in the foothills west of the Sacramento Valley with gravelly soils and strong diurnal shifts; it excels in Cabernet Sauvignon and Rhône varieties.
Yucaipa Valley (San Bernardino; Riverside) — A warm inland AVA east of Los Angeles with alluvial soils; it supports Rhône and Bordeaux grapes in a Mediterranean climate.
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