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California Wine Atlas

Clements Hills

AVA · San Joaquin County · District 11, 12

27 CFR 9.197 · established 2006-07-17

Heat class V · 1991-2020 normals

Climate normals in three numbers

4,036°F-days

, Apr 1 – Oct 31

30 GridMET cells cover this region

V

82mm

season rain, Apr 1 – Oct 31

24 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

This boundaryClick to open

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 Clements Hills

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What's in the ground

6.1

pH, 1:1 water

12.2cm

, whole profile

91cm

to

Well drained

, dominant condition

Distribution across 79 · mean ◆, median │, p10–p90 bar

6.1
1.2%
16.2%
available water
12.2cm
depth to restriction
91cm

Dominant

  • 12.3%
  • 11.8%
  • 10.6%
  • 9.6%
  • 9.1%

79 map units · soil described over 95.9% of the region’s area · 4.2% is water, rock outcrop or other non-soil · 80% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Sandy loam

55% sand · 29% silt · 16% clay

Sandier than 82% of California appellations and clayier than 10%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.

Plus 12% 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

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 (222 words)

(c) Boundary. The Clements Hills viticultural area is located in San Joaquin County, California, and is entirely within the Lodi viticultural area (27 CFR 9.107). The Clements Hills viticultural areas boundary is as follows— (1) The beginning point is on the Waterloo map at the intersection of the Calaveras River and Jack Tone Road, section 31 west boundary line, T3N, R8E. From the beginning point, proceed north 6.9 miles on Jack Tone Road to its intersection with Elliot 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 (2) Proceed northwest 5.4 miles on Elliott Road, crossing the Mokelumne River, to Elliott Road's intersection with Liberty Road at the northwest corner of section 1, T4N, R7E, (Lockeford Quadrangle); then (3) Proceed east 9.3 miles on Liberty Road to its junction with the San Joaquin-Amador County line, north of the Camanche Reservoir, section 32, T5N, R9E (Clements Quadrangle); then (4) Proceed south-southeast 13 miles along the San Joaquin-Amador and San Joaquin-Calaveras County lines, crossing over the Wallace map, to the County line's intersection with the Calaveras River, section 31, T3N, R10E (Valley Springs SW., Quadrangle); and (5) Proceed southwest (downstream) 14.2 miles along the Calaveras River, crossing over the Linden map, returning to the beginning point.