Central Coast GIS
Wine appellation · CA

St. Helena

The St. Helena appellation was established in 1995 and covers 9,202 acres across Napa. It sits inside Napa Valley.

Established1995
Area9,202 acres · 14 sq miles
CountiesNapa
Part ofNapa Valley, North Coast
Federal listing27 CFR 9.149
Digital download
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  • SVG and DXF cut files12, 18, 24 in · 300, 450, 600 mm
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How it came to be

Recognised by the federal government on petition by Charles A. Carpy, Chairman of the St. Helena Appellation Committee.

9,202 acres

Neighbouring appellations


The boundary, as written into law

Every American wine appellation is defined in federal regulations by walking the boundary landmark by landmark. The official description of this one begins:

(1) Beginning on the Rutherford Quadrangle map at the point of intersection between State Highway 29 and a county road shown on the map as Zinfandel Avenue, known locally as Zinfandel Lane, the boundary proceeds in a southwest direction along Zinfandel Avenue to its intersection with the north fork of Bale Slough (blueline stream) near the 201 foot elevation marker; (2) Thence in a northwesterly direction...

Boundary traced by the UC Davis Library from the official descriptions in federal regulation, and released under an open licence. Smoothed for manufacturing. Decorative use only, not for legal boundary determination.