The Spring Mountain District AVA is located in the Napa Valley AVA. The appellation sits on steep terraces of the Mayacamas Mountains that separate Napa Valley from Sonoma Valley and the Santa Rosa Plain. It lies in a northwestern portion of the Napa Valley above and behind the town of Saint Helena. The boundaries of the appellation extend from the top of the ridgeline on the western edge, tracing the Sonoma/Napa County border. From the ridgeline the boundaries extend down to the 400 feet (122 m) contour line at the eastern base of the hillside. The southern boundary is Sulphur Creek and one of its tributaries, while the northern boundary is Ritchie Creek. Elevations range from 400 feet (122 m) to 2,600 feet (792 m). The region has a predominantly eastern exposure. Encompassed within its bounds are about 8,600 acres (3,480 ha), of which about 1,000 acres (400 ha) are planted to vineyards. Given the small crop yields on hillsides, the region represents less than 2% of Napa Valley wine.

See winery listings for this region