Stags Leap District is an American Viticultural Area (AVA) located in Napa County, California, directly east of the town of Yountville and approximately north of the county seat of Napa. It was established as the nation's 104th, the state's 59th and the county’s sixth appellation on January 26, 1989 by the Bureau of Alcohol, Tobacco and Firearms (ATF), Treasury after reviewing two petitions received since 1985 from the Stags Leap Appellation Committee, hereinafter referred to as Group A, proposing a viticultural area in Napa Valley, California, to be known as "Stags Leap District."
In the 1976 Judgment of Paris wine tasting, Stag's Leap Wine Cellars' 1973 Cabernet vintage, grown and processed in the locale later designated as an AVA, ranked first in the red wine category besting wines from top-rated Bordeaux estates, immediately recognizing California, specially Napa Valley, as a primer international viticulture region. According to the ruling, the Bureau concluded that the soil (including the topsoil) is the primary geographical feature that distinguishes Stags Leap District from the surrounding areas. The Bale soil series predominates the region with clay loam sediments from the Napa River and volcanic soil deposits left over from erosion of the Vaca Mountains. Stags Leap District is a small area, only about , was the third sub-appellation within the renown Napa Valley particularly noted for its Cabernet Sauvignon and Petite Sirah. As of 2025, Stags Leap District is resident to approximately twelve vineyards and seventeen wineries.
Amendments At the outset, the area proposed by Group A consisted of approximately including approximately of vineyards, situated east of the city of Yountville and north of the City of Napa. The proposed area is surrounded by hills to the north, east, and west, and was configured like a funnel. Group A submitted an amendment to its petition, dated December 18, 1985 (hereinafter referred to as the First Amendment) and requested, among other things, that the name of the proposed viticultural area be changed from "Stags Leap" to "Stags Leap District." During the proposal process, on June 26, 1986, Group A submitted a second amendment and supplement to its original petition (hereinafter referred to as the Second Amendment). The Second Amendment requested a revision of the northern and western boundaries of the proposed Stags Leap District. Attached to the Second Amendment was a research document prepared by Silverado Vineyards, in support of Group A's contention that the Napa River, rather than the peaks of then hills west of the Silverado Trail, was the appropriate western boundary for the proposed viticultural area, and the ring of hills to the north was a more appropriate northern boundary. The revision of the northern and western boundaries added approximately to the proposed viticultural area, for a total size of approximately . Included within the extended boundaries were previously excluded vineyards owned by, among others, Silverado Vineyards and Mondavi Winery. ATF received two comments in response to the notice of proposed rulemaking. One comment in particular, dated April 10, 1987. was submitted by Mr. Stanley Anderson of S. Anderson Vineyard. Mr. Anderson, who owns a winery and vineyards located just north of the proposed northern boundary, requested that the northern boundary be extended approximately . He suggested that the Yountville Cross Road would be a more appropriate boundary than the peaks of hills as proposed in Notice No. 620. The proposed revision would add to the proposed Stags Leap District, for a total size of approximately . With the exception of the northern boundary, Mr. Anderson supported the other boundaries as proposed in the notice. Attached to Mr. Anderson's comment were letters from several neighboring vineyard owners who are also located in the proposed "northern extension," all of whom supported the extension of the northern boundary to the Yountville Cross Road. Mr. Anderson, and those of his neighbors who supported the northern extension, will hereinafter be referred to as Group B. Although recognizing that there is evidence which would support both Group A and Group B in this matter, ATF found that the greater weight of evidence supported the Group B proposal. ATF found that the general area encompassed within the boundaries proposed by Group B is locally referred to as "Stags Leap District." In ATF's view, Group B adequately demonstrated that their proposed area reflects the current definition of Stags Leap District.
History The origin of the name "Stags Leap" is not well documented. Most common oral histories attribute it to a native Wappo legend of a stag leaping to escape hunters as another version refers to a large, majestic stag that eluded a generation of hunters, always leaping and escaping at the last moment. Grapes were planted in 1872, by Terrill L. Grigsby, on the family's parcel where the current Stag's Leap estate resides. He built Occidental Winery, the area's first, in 1878. Nathan Fay planted the first Cabernet Sauvignon in 1961, on land that would later be purchased by Warren Winiarski for Stag's Leap Wine Cellars. Pioneering vinters, Richard Steltzner and Bernard Portet, settled in Stags Leap in 1964 and '68, respectively, establishing vineyards in the ideal terroir with its temperature, constant breezes and ideal volcanic soil to achieve fruit with a concentrated color and intense flavor. At the relatively unknown Paris Wine Tasting of 1976, celebrating the United States Bicentennial, Stag's Leap Wine Cellars' 1973 Cabernet vintage, grown and processed in the locale later given AVA status, ranked first in the red wine category besting wines from top-rated Bordeaux estates, and suddenly elevating California, especially Napa Valley, as a primer viticulture region. In 1972, John Shafer left Chicago's publishing world to become a farmer in Stags Leap. He grew walnut trees and grapes, terracing the steep, rocky hillsides. He released his first vintage in 1981, a 100 percent Cabernet that teased the palate, suggesting a Merlot blend. This flavor profile, the hallmark of Cabs from Stags Leap, further advocating for its unique Napa Valley sub-appellation.
Terroir Topography In their initial petition, Group A submitted evidence that the proposed Stags Leap (District) viticultural area had a distinct microclimate, resulting from the orographic configuration of the area. Often referred to as a "valley within a valley," the area is surrounded on three sides by hills or mountains configured like a funnel that accentuated the inflow of cool air from San Pablo Bay, which is located south of the proposed area. As stated in the weather report of Irving P. Krick Associates, Inc.(Petition. p. 38-39): The wide end of the funnel faces south to receive the bay breeze and the frequent fogs and low clouds which accompany it. These breezes are then guided into the area by its unique topography, including the mountains to the east of the Silverado Trail and the series of contiguous hills to the west of the Trail, which serve as the two sides of the funnel.The Krick report goes on to state that the topography of the area also controls the movement of air out of the area, "[slpecifically, the air exits to the mountain elevations to the north or, * * * to the main valley floor through the narrow passes at the north of Stags Leap." (Petition, p. 39). However, with the subsequent extension of the western boundary from the hills west of the Silverado Trail to the Napa River (Second Amendment), as proposed in Notice No. 620, ATF does not believe that the topography of the viticultural area is a significant geographical feature in determining a western boundary. As meteorologist Donald Schukraft (Weather Network, Inc.) stated at the public hearing in discussing the extended (western) area, "[t/here is no funnel effect here. This area is open to the Valley." (Tr. Vol. I, p. 125). Similarly, ATF does not believe that topography is a significant geographic feature in determining the northern boundary of the Stags Leap District viticultural area. Although the petitioners had noted that the northern ring of hills, just south of the Yountville Cross Road, defined part of the "funnel," no evidence was submitted in the rulemaking proceeding which conclusively demonstrated a difference between the area north and south of the hills.
Climate In their Second Amendment, Group A included a weather study of the proposed viticultural area (as specified in Notice No. 620), prepared by Weather Network, Inc. Weather data was obtained from thermographs and automatic weather stations located both inside and outside (e.g., approximately west of) the proposed viticultural area. As noted in the report (Second Amendment, p. 34):* * * the daily maximum and minimum temperatures recorded by the stations in