[blue_large]Calistoga District AVA[/blue_large]

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The Calistoga AVA is located in the northern portion of California’s Napa Valley AVA. The appellation is distinguished by its volcanic soil, high temperatures up to 100°F (38°C) during the day, and cool nights during the growing season due to breezes from the Russian River, causing the highest diurnal temperature variation in the Napa Valley—up to 50°F (10°C).

Year established 1992
Climate Warm to hot, depending upon time of year; lower humidity; summer temperatures peak to 90°F (32.2°C) and fall to low 50s°F (11°C), the result of marine air from the northwest; cool afternoon and evening breezes
Elevation 300 to 1200 ft (92 to 370m)
Rainfall 38 to 60 inches (96.5 to 150cm) annually
Soils Almost completely of volcanic origin, soils range from rocky, stony loam on the hillsides, to gravelly or cobbly loams on the alluvial fans, to heavier clay-silt soils in the valley center areas
Total Area 11,000 acres (45 km2)
Size of planted vineyards 1,500 acres (6 km2)
Varietals/characteristics Cabernet Sauvignon, Zinfandel, Syrah, Petite Sirah of this area have a forthright character, deep concentration without heaviness, and the capacity to develop profound complexity with age.