Mokelumne River
AVA · San Joaquin County · District 11, 12
27 CFR 9.200 · established 2006-07-17
Heat class IV · 1991-2020 normals
Climate normals in three numbers
, Apr 1 – Oct 31
32 GridMET cells cover this region
raw 4 km GridMET would say V
season rain, Apr 1 – Oct 31
26 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
San Joaquin County — not Mokelumne River
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What's in the ground
6.9
pH, 1:1 water
18.4cm
, whole profile
162cm
to
Well drained
, dominant condition
Distribution across 44 · mean ◆, median │, p10–p90 bar
Dominant
- 42.7%
- 10.8%
- 7.7%
- 7.4%
- 3.7%
44 map units · soil described over 98.6% of the region’s area · 3.9% is water, rock outcrop or other non-soil · 36% of the described area has a restrictive layer within the profile.
Sand, silt and clay, against every other appellation
Sandy loam
60% sand · 23% silt · 18% clay
Sandier than 90% 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 2% 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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Producers
A curated roster, not a census — only source-verified entries appear, 2772 published across the atlas.
Bearing acreage by variety
San Joaquin County · District 11, 12
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Price per ton
San Joaquin County · District 11, 12
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The appellation in federal law
The boundary, in the government’s own words (251 words)
(c) Boundary. The Mokelumne River viticultural area is located in San Joaquin County, California, and is entirely within the Lodi viticultural area (27 CFR 9.107). The Mokelumne River viticultural area boundary is as follows— (1) The beginning point is on the Lodi South map at the intersection of Eightmile Road and Interstate 5, section 36 south boundary line, T3N, R5E. From the beginning point, proceed north-northwest 14.7 miles on Interstate 5, crossing over the Terminous and Thornton maps, to the Interstate's intersection with the Mokelumne River, T5N, R6E (Bruceville Quadrangle); then (2) Proceed southeast (upstream) 5 miles along the meandering Mokelumne River to its intersection with Peltier Road, section 16, T4N, R6E (Lodi North Quadrangle); then (3) Proceed east 8.3 miles along Peltier Road to its intersection with Elliott Road at the northeast corner of section 23, T4N, R7E (Lockeford Quadrangle); then (4) Proceed south then southeast 2.3 miles on Elliott Road to its intersection with Jack Tone Road in the village of Lockeford (where Jack Tone Road is known as E. Hammond Street for a short distance), section 30, T4N, R8E (Lockeford Quadrangle); then (5) Proceed south 6.7 miles on Jack Tone Road to its intersection with the Calaveras River, section 36 east boundary line, T3N, R7E (Waterloo Quadrangle); then (6) Proceed southwesterly (downstream) 0.9 mile along the meandering Calaveras River to its intersection with Eightmile Road, section 36 south boundary line, T3N, R7E (Waterloo Quadrangle); and (7) Proceed west 8.6 miles on Eightmile Road, returning to the beginning point.