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California Wine Atlas

Tuolumne County

County

Heat class I · 1991-2020 normals

Climate normals in three numbers

2,003°F-days

, Apr 1 – Oct 31

415 GridMET cells cover this region

I

236mm

season rain, Apr 1 – Oct 31

71 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

5.8

pH, 1:1 water

10.8cm

, whole profile

129cm

to

Well drained

, dominant condition

Distribution across 404 · mean ◆, median │, p10–p90 bar

5.8
7.3%
12.3%
available water
10.8cm
depth to restriction
129cm

Dominant

  • 15.5%
  • 8.3%
  • 5.9%
  • 5.1%
  • 4.3%

404 map units · soil described over 90.9% of the region’s area · 23.2% is water, rock outcrop or other non-soil · 64% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Sandy loam

60% sand · 27% silt · 12% clay

Sandier than 90% of California appellations and clayier than 3%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.

Plus 21% 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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