Guenoc Valley
AVA · Lake County · District 2
27 CFR 9.26 · established 1981-11-19
Heat class IV · 1991-2020 normals
Climate normals in three numbers
, Apr 1 – Oct 31
6 GridMET cells cover this region
season rain, Apr 1 – Oct 31
50 mm of it in the , Sep 1 – Oct 31
Warm and cool vintages since 1980
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Rain across the season, and at harvest
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The boundary
Hovering a shaded region names it; a click opens its page.
Measured vineyard area
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Drought categories, year by year
Lake County — not Guenoc Valley
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What's in the ground
7.1
pH, 1:1 water
14.7cm
, whole profile
106cm
to
Well drained
, dominant condition
Distribution across 20 · mean ◆, median │, p10–p90 bar
Dominant
- 36.6%
- 18.6%
- 18.4%
- 10.0%
- 5.6%
20 map units · soil described over 93.2% of the region’s area · 13.7% is water, rock outcrop or other non-soil · 65% of the described area has a restrictive layer within the profile.
Sand, silt and clay, against every other appellation
Clay loam
36% sand · 35% silt · 29% clay
Sandier than 23% of California appellations and clayier than 86%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.
Plus 12% rock fragments by volume, which the triangle does not describe — the three fractions are of the fine-earth material only.
Elevation, slope and aspect
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Bearing acreage by variety
Lake County · District 2
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Price per ton
Lake County · District 2
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The appellation in federal law
The boundary, in the government’s own words (136 words)
(c) Boundaries. The Guenoc Valley viticultural area is located within Lake County, California. The beginning point of the boundary is Station 20 of Denton's Survey of Guenoc Rancho, presently marked by a 1 1/2 inch galvanized pipe located atop Jim Davis Peak. On the approved maps, Jim Davis Peak is the unnamed peak (elevation 1,455 feet) located on the western boundary of Section 35, Township 11 North, Range 6 West. From this beginning point the boundary runs: (1) South 07°49′34″ East, 9,822.57 feet to the USGS triangulation station “Guenoc;” (2) Then, South 29°14′31″ West, 10,325.08 feet; (3) Then, South 00°00′ West, 2,100.00 feet; (4) Then, North 90°00′ West, 4,150.00 feet; (5) Then, North 24°23′11″ West, 16,469.36 feet; (6) Then, North 75°47′20″ East, 7,943.08 feet; and (7) Then, North 60°47′00″ East, 7,970.24 feet to the beginning point.