27 CFR § 9.23 - Napa Valley.

---
identifier: "/us/cfr/t27/s9.23"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "27 CFR § 9.23 - Napa Valley."
title_number: 27
title_name: "Alcohol, Tobacco Products and Firearms"
section_number: "9.23"
section_name: "Napa Valley."
chapter_name: "ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY"
subchapter_number: "A"
subchapter_name: "ALCOHOL"
part_number: "9"
part_name: "AMERICAN VITICULTURAL AREAS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "27 U.S.C. 205."
regulatory_source: "T.D. ATF-60, 44 FR 56692, Oct. 2, 1979, unless otherwise noted."
cfr_part: "9"
---


# 9.23 Napa Valley.

(a) *Name.* The name of the viticultural area described in this section is “Napa Valley.”

(b) *Approved maps.* The maps showing the boundaries of the Napa Valley viticultural area are the:

(1) “Mt. St. Helena” U.S.G.S. 7.5 minute quadrangle;

(2) “Detert Reservoir” U.S.G.S. 7.5 minute quadrangle;

(3) “St. Helena” U.S.G.S. 15 minute quadrangle;

(4) “Jericho Valley” U.S.G.S. 7.5 minute quadrangle;

(5) “Lake Berryessa” U.S.G.S. 15 minute quadrangle;

(6) “Mt. Vaca” U.S.G.S. 15 minute quadrangle;

(7) “Cordelia” U.S.G.S. 7.5 minute quadrangle;

(8) “Cuttings Wharf” U.S.G.S. 7.5 minute quadrangle; and

(9) Appropriate Napa County tax assessor's maps showing the Napa County-Sonoma County line.

(c) *Boundaries.* The Napa Valley viticultural area is located within Napa County, California. From the beginning point at the conjuction of the Napa County-Sonoma County line and the Napa County-Lake County line, the boundary runs along—

(1) The Napa County-Lake County line;

(2) Putah Creek and the western and southern shores of Lake Berryessa;

(3) The Napa County-Solano County line; and

(4) The Napa County-Sonoma County line to the beginning point.

[T.D. ATF-79, 46 FR 9063, Jan. 28, 1981, as amended by T.D. ATF-201, 50 FR 12533, Mar. 29, 1985]