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California Wine Atlas

Calaveras County

County

Heat class IV · 1991-2020 normals

Climate normals in three numbers

3,555°F-days

, Apr 1 – Oct 31

203 GridMET cells cover this region

IV

189mm

season rain, Apr 1 – Oct 31

55 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

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Hovering a shaded region names it; a click opens its page.

Measured vineyard area

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Drought categories, year by year

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What's in the ground

6.0

pH, 1:1 water

12.7cm

, whole profile

98cm

to

Well drained

, dominant condition

Distribution across 244 · mean ◆, median │, p10–p90 bar

6.0
5.5%
17.5%
available water
12.7cm
depth to restriction
98cm

Dominant

  • 13.4%
  • 12.3%
  • 6.4%
  • 5.7%
  • 5.5%

244 map units · soil described over 96.7% of the region’s area · 9.0% is water, rock outcrop or other non-soil · 87% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Loam

47% sand · 36% silt · 18% clay

Sandier than 69% of California appellations and clayier than 18%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.

Plus 17% 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

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Price per ton

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