Insights
12 findings · 41 published tables · 382,672 rows · 13 outside publishers · 1980–2025 · rebuilt 2026-08-16
The same grape, twenty times the price
In 2025, Napa (District 4) Cabernet Sauvignon crushed for $8,644.88 a ton. District 13's crushed for $443.69 — a 19.5x gap. Both figures rest on real volume: 77,800.8 tons in Napa, 25,119.8 in District 13.
District 4 (Napa) Cabernet, 2025
77,801 tons crushed
District 13 Cabernet, 2025
25,120 tons crushed
Napa premium over District 13
Napa's crush is now majority Cabernet
District 4's crush was 31.3% Cabernet Sauvignon in 2000 and 53.7% in 2025. The district's total crush stayed nearly flat, 136,962.1 tons against 144,806.9 tons; the plantings consolidated around one grape.
District 4 crush that is Cabernet, 2025
same share, 2000
Cabernet tonnage, District 4, 2025
of 144,807 tons total district crush
California's Zinfandel county is San Joaquin
San Joaquin County carried 12,865 acres of Zinfandel in 2025, 37.7% of the statewide total. That is more than Napa's 1,392 acres and Sonoma's 4,541 acres combined.
San Joaquin County Zinfandel, 2025
37.7% of statewide Zinfandel
Napa County Zinfandel, 2025
Sonoma County Zinfandel, 2025
OpenSan Joaquin County · Zinfandel
Six times the Pinot Noir, the same price
Statewide Pinot Noir crush grew 5.9-fold, from 53,050.1 tons ($1,822/ton) in 2000 to a peak of 313,848.2 tons ($1,851/ton) in 2018. In 2025 it stood at 190,625.6 tons ($1,843/ton). In nominal dollars, the price held essentially flat throughout.
statewide Pinot Noir crush, 2000
peak crush, 2018
$1,851/ton
2025 crush
$1,843/ton
OpenPinot Noir
CDFA renamed a grape mid-series
CDFA published this grape as 'Mataro' through 2016 (4,614.5 tons that year) and as 'Mourvedre' starting in 2017 (4,094.5 tons). The tonnage runs continuously across the rename, and the two published series never share a year.
'Mataro', 2016 (last year)
'Mourvedre', 2017 (first year)
OpenMourvedre
CDFA and NASS disagree on bearing acreage
CDFA and NASS's own bearing-acreage ratio drifted from 0.928 in 2007 to 0.780 in 2019: NASS's count grew 22.9% over a span CDFA's grew 3.3%. The same two sources agree closely on tonnage (median ratio 1.064) and price (median ratio 0.982) across the years both report. Nevada County's 2022 census logged 630 CDFA wine-grape acres against 240 acres of all grapes in the federal count, 2.6x over — arithmetically impossible if both are right.
CDFA ÷ NASS bearing acres, 2007
same ratio, 2019
Nevada County, CDFA vs. Census, 2022
statewide CV 24.6%
OpenNevada County
Russian River Pinot ripens eight days earlier
In Russian River Valley, modeled Pinot Noir maturity moved 7.9 days earlier: from day 262.2 of the year in the 1980s to 254.3 in 2016–2025. The panel reached its ripening threshold in all 46 years of the record.
Russian River Valley Pinot Noir
mean maturity, 1980s
mean maturity, 2016–2025
The span from coolest to warmest appellation
West Sonoma Coast's 1991–2020 normal is 2,200 GDD (heat class I); Antelope Valley of the California High Desert's is 4,656 GDD (heat class V). The 2,456-GDD span between them is wider than the entire I-to-V heat class scale.
coolest AVA normal — West Sonoma Coast
65 GridMET cells
warmest AVA normal — Antelope Valley of the California High Desert
138 GridMET cells
the span between them
OpenWest Sonoma Coast · Antelope Valley of the California High Desert
The steepest vineyards aren't in Napa
Among AVAs with enough mapped vineyard to measure, Tehachapi Mountains has the highest mean vineyard elevation at 1,227 m; Saddle Rock-Malibu has the steepest mean slope at 18.9°. Napa's mountain AVAs rank high on both, but lead neither.
highest mean vineyard elevation — Tehachapi Mountains
1,758 vineyard cells (~43 acres)
steepest mean vineyard slope — Saddle Rock-Malibu
2,709 vineyard cells (~67 acres)
Two pH units between appellation topsoils
Among AVAs where SSURGO describes most of the mapped area, Mendocino Ridge's topsoil averages pH 5.74; Palos Verdes Peninsula's averages pH 7.75 — a 2.01-unit pH span in the same 0–25 cm layer.
lowest — Mendocino Ridge
55 map units, 98.0% described
highest — Palos Verdes Peninsula
27 map units, 97.5% described
The grapes readers look up aren't the grapes California plants
Montepulciano drew 60,145 Wikipedia views against 53 acres planted statewide; Nebbiolo 140,107 views against 142 acres; Cabernet Sauvignon 376,327 views against 88,062 acres; Chardonnay 265,227 views against 81,256 acres.
Montepulciano, 24-month Wikipedia readership
53 bearing acres statewide
Nebbiolo, 24-month Wikipedia readership
142 bearing acres statewide
Cabernet Sauvignon, 24-month Wikipedia readership
88,062 bearing acres statewide
OpenMontepulciano · Nebbiolo · Cabernet Sauvignon
Napa's wettest harvest fell in its worst drought year
Napa County's 2021 harvest-window rain was 256.2 mm, the wettest in the county's 1980–2025 record — the second-wettest year had 143.3 mm. The same year posted the county's highest mean drought-severity reading (DSCI 446.3) of the 2000–2025 monitor record.
Napa County harvest-window rain, 2021
next wettest: 1982, 143.3 mm
Napa County mean drought severity, 2021
OpenNapa County
The data behind them
The atlas in figures
rows across the published tables
41 tables, from 13 outside publishers plus 18 computed here
of record, 1980 to 2025
the climate reconstruction is the long one; most published series start in 2000
regions with a page
85 AVAs, 69 sub-AVAs, 58 counties and the state
grape varieties in the crush and acreage reports
the ones a registry resolves get a page; the rest stay searchable under their own name
region-vintages of modeled climate
one row per region per season, 1980 onward
soil described in California
from the state's own row — appellations nest, so these are never added up
producers and brands with a page
1,494 wines beneath them, each citing the page that names it
federal label approvals read
6,051 distinct brands, filed between 2023-08-15 and 2026-08-14
How far back each source goes
Terrain extremes
highest, on average
Tehachapi Mountains1,268.4m
lowest
Clarksburg0.7m
steepest
Mendocino Ridge25.5°
widest spread of elevation
North Coast1,987m
Who publishes what
CDFA/NASS California Grape Crush Report
223,794 rows · 7 tables
CDFA/NASS California Grape Acreage Report · CDFA/NASS Grape Crush and Grape Acreage Reports · CDFA/NASS California Grape Crush Report, Table 3
32,412 rows · 2 tables
TTB Public COLA Registry — certificates of label approval
California Department of Forestry and Fire Protection
9,798 rows · 1 table
California Department of Forestry and Fire Protection (CAL FIRE), Fire and Resource Assessment Program — California Fire Perimeters (all), via California Natural Resources Agency Open Data (data.cnra.ca.gov/dataset/california-fire-perimeters-all), CC BY
6,387 rows · 1 table
TTB List of Permittees — wine producers and blenders (FOIA, published weekly)
California Department of Water Resources
1,917 rows · 2 tables
California Department of Water Resources, Statewide Crop Mapping — California Natural Resources Agency Open Data (data.cnra.ca.gov/dataset/statewide-crop-mapping); mapping by Land IQ, LLC under contract to DWR
NDMC/USDA/NOAA US Drought Monitor
1,534 rows · 1 table
NDMC/USDA/NOAA US Drought Monitor, county area percent
290 rows · 2 tables
USDA NASS QuickStats — Census of Agriculture, county grapes · USDA NASS QuickStats — annual state survey, wine-type grapes
Electronic Code of Federal Regulations
154 rows · 1 table
Electronic Code of Federal Regulations, 27 CFR Part 9 — American Viticultural Areas (Alcohol and Tobacco Tax and Trade Bureau, Department of the Treasury), via ecfr.gov
154 rows · 1 table
USGS 3D Elevation Program (3DEP) 1/3 arc-second seamless DEM via The National Map
NOAA NCEI GHCN-Daily station observations
60 rows · 1 table
NOAA NCEI GHCN-Daily station observations vs pipeline climate_vintage (GridMET delta-downscaled to PRISM 800 m)
US Census TIGER/Line cartographic boundaries 2023
59 shapes · 2 tables
The largest published tables
Curated rows, by tier
producers · verified
a live source URL, fetched and checked — every published producer cites a federal record
wines · verified
the producer's own page is cached and read offline, and it has to name the wine or the build fails
wines · editorial
no citable page — usually a storefront that renders its wine list only after JavaScript runs
Published by somebody else
Derived here
| table | one row is | rows | source |
|---|---|---|---|
| variety_grower | variety × producer × basis | 1,930 | Curated producer roster |
| producer_profile | producer | 121 | curated, owner-reviewed (data/curated/producer_profile.csv) |
| producer_wine | wine | 1,494 | curated, owner-reviewed (data/curated/producer_wine.csv) |
| producer | producer | 2,772 | curated, owner-reviewed (data/curated/producer.csv) |
| subject_popularity | one row per atlas subject with a page | 3,155 | derived — atlas mass, publication mentions and Wikimedia reader interest (D4.1) |
| extents | derived — one domain per charted metric, over every subject | 13 | derived from published atlas tables |
| insights | derived — one record per owner-verified insight | 12 | derived from published atlas tables |
| locale_climate | county × year (delta-downscaled GridMET/PRISM) | — | derived from published atlas tables |
| climate_normals | region polygon | 213 | GridMET (UC Merced) daily ~4 km; PRISM (Oregon State) 800 m normals |
| climate_vintage | region polygon × crop year | 9,798 | GridMET (UC Merced) daily ~4 km; PRISM (Oregon State) 800 m normals |
| maturity | region × variety × year | 78,384 | Modeled: GridMET delta-downscaled to PRISM 800 m, accumulated as GDD base 10 °C from April 1; thresholds from Van Leeuwen et al., VIIth International Terroir Congress |
| wine_tech | wine × vintage | 21 | producer technical sheets, fetched (data/curated/wine_tech.csv) |
| crosswalk_ava_admin | AVA x county | 212 | spatial overlay + CDFA district definitions (2025 Final) |
| producer_premises | bonded premises | 258 | TTB List of Permittees (federal), owner-reviewed roles |
| region | state / county / AVA / sub-AVA | 213 | UC Davis AVA project; Census TIGER 2023 |
| ttb_geocode | bonded premises | 6,373 | US Census Bureau geocoder, Public_AR_Current benchmark |
| variety_profile | variety | 211 | VIVC (Julius Kühn-Institut) and UC Davis Foundation Plant Services |
| wikipedia_interest | one row per atlas subject with a page | 779 | Wikimedia Foundation — Wikimedia REST API (pageviews) and Wikimedia API (content) |
Fetched but not published
Fetched from the publisher, never republished here
- GridMET (UC Merced Climatology Lab), daily ~4 kmgridmet
- PRISM Climate Group, Oregon State — 800m normalsprism
Raw weather rasters — every vintage climate figure is computed from them, and they are far too large to ship.
Build stages, whose output is named something else
- shardsderived — one entry per subject, bucketed by id
- sitederived — state dashboard summary and search index
- variety_sitederived — one record per varietal page
The parameters a build step ran with — the shard hash and bucket count, the outlier threshold behind the vintage callouts.