California
State
Heat class IV · 1991-2020 normals
Climate normals in three numbers
, Apr 1 – Oct 31
24565 GridMET cells cover this region
season rain, Apr 1 – Oct 31
40 mm of it in the , Sep 1 – Oct 31
Warm and cool vintages since 1980
loading vintages…
Rain across the season, and at harvest
loading vintages…
The boundary
Hovering a shaded region names it; a click opens its page.
Measured vineyard area
loading crop mapping…
What's in the ground
6.9
pH, 1:1 water
11.8cm
, whole profile
121cm
to
Well drained
, dominant condition
Distribution across 19610 · mean ◆, median │, p10–p90 bar
Dominant
- 5.7%
- 3.7%
- 2.3%
- 2.1%
- 1.0%
19610 map units · soil described over 94.6% of the region’s area · 10.0% is water, rock outcrop or other non-soil · 60% of the described area has a restrictive layer within the profile.
Sand, silt and clay, against every other appellation
Sandy loam
55% sand · 28% silt · 17% clay
Sandier than 83% of California appellations and clayier than 15%. 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
loading terrain…
Producers
A curated roster, not a census — only source-verified entries appear, 2772 published across the atlas.
The roster places a producer in the appellation it names, never in a county — a winery’s address is a street in an AVA, and filing it under the county would be a claim about which of an AVA’s counties it sits in. So this region has no roster of its own, and 177 producers are entered in the appellations within it:
- Napa Valley19
- St. Helena16
- Russian River Valley16
- Rutherford8
- Los Carneros8
- Stags Leap District7
- Calistoga6
- Oak Knoll District of Napa Valley6
- Oakville6
- Dry Creek Valley6
- Sonoma Valley6
- Mokelumne River5
- Paso Robles Willow Creek District5
- Temecula Valley4
- Adelaida District4
- Alexander Valley4
- Livermore Valley3
- Diamond Mountain District3
- Howell Mountain3
- Yountville3
- Paso Robles Estrella District3
- North Coast2
- Santa Cruz Mountains2
- Santa Maria Valley2
- South Coast2
- Santa Ynez Valley2
- Anderson Valley2
- Mt. Veeder2
- Spring Mountain District2
- Paso Robles Geneseo District2
- Templeton Gap District2
- Chalk Hill2
- Clarksburg1
- Cucamonga Valley1
- San Francisco Bay1
- Santa Clara Valley1
- El Dorado1
- Jahant1
- Mendocino1
- Monterey1
- High Valley1
- Edna Valley1
- Los Olivos District1
- Green Valley of Russian River Valley1
- Sonoma Mountain1
- Bennett Valley1
Bearing acreage by variety
loading acreage…
Price per ton
loading crush report…