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California Wine Atlas

Adelaida District

Sub-AVA · San Luis Obispo County · District 8

27 CFR 9.238 · established 2014-10-09

Heat class III · 1991-2020 normals

Climate normals in three numbers

3,170°F-days

, Apr 1 – Oct 31

24 GridMET cells cover this region

III

70mm

season rain, Apr 1 – Oct 31

30 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 Luis Obispo County — not Adelaida District

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What's in the ground

7.3

pH, 1:1 water

13.2cm

, whole profile

91cm

to

Well drained

, dominant condition

Distribution across 76 · mean ◆, median │, p10–p90 bar

7.3
2.2%
30.2%
available water
13.2cm
depth to restriction
91cm

Dominant

  • 27.4%
  • 12.0%
  • 8.8%
  • 8.6%
  • 6.2%

76 map units · soil described over 99.3% of the region’s area · 5.3% is water, rock outcrop or other non-soil · 89% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Clay loam

36% sand · 34% silt · 30% clay

Sandier than 20% of California appellations and clayier than 90%. 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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Producers

A curated roster, not a census — only source-verified entries appear, 2772 published across the atlas.

Bearing acreage by variety

San Luis Obispo County · District 8

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Price per ton

San Luis Obispo County · District 8

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The appellation in federal law

The boundary, in the government’s own words (585 words)

(c) Boundary. The Adelaida District viticultural area is located in San Luis Obispo County, California. The boundary of the Adelaida District viticultural area is as described below: (1) The beginning point is on the Paso Robles map at the point where an unnamed light-duty road locally known as Wellsona Road crosses the main channel of the Salinas River, section 4, T26S/R12E. From the beginning point, proceed southerly (upstream) along the main channel of the Salinas River approximately 3.4 miles to the river's first intersection with the city of Paso Robles Corporate Boundary line, T26S/R12E; then (2) Proceed westerly and then southerly along the meandering city of Paso Robles Corporate Boundary line, crossing onto the Templeton map, to the boundary line's intersection with Peachy Canyon Road, T26S/R12E; then (3) Proceed westerly on Peachy Canyon Road approximately 2.6 miles, crossing to and from the Paso Robles map, to the road's intersection with an unnamed intermittent stream at the 1,100-foot elevation line near the center of section 36, T26S/R11; then (4) Proceed south-southeasterly (downstream) along the unnamed intermittent stream approximately 1.2 miles to the stream's intersection with the R11E/R12E common boundary line, section 1, T27S/R11E; then (5) Proceed south along the R11E/R12E common boundary line approximately 0.15 mile to the line's intersection with an unnamed light-duty road locally known as Kiler Canyon Road, section 1, T27S/R11E; then (6) Proceed westerly on the light-duty and then unimproved Kiler Canyon Road approximately 4 miles, crossing onto the York Mountain map, to the road's intersection with Summit Canyon Road (locally known as Peachy Canyon Road), section 33, T26S/R11E; then (7) Proceed southwesterly on Summit Canyon Road (locally known as Peachy Canyon Road) approximately 3.5 miles to the road's intersection with Willow Creek Road (locally known as Vineyard Drive), T27S/R11E; then (8) Proceed southerly on Willow Creek Road (locally known as Vineyard Drive) approximately 0.4 mile to the road's intersection with Dover Canyon Road, T27S/R11E; then (9) Proceed westerly on Dover Canyon Road approximately 2.8 miles to the road's intersection with an intermittent stream and an unnamed jeep trail in Dover Canyon, section 14, T27S/R10E; then (10) Proceed west-northwesterly in a straight line approximately 5.7 miles, crossing onto the Cypress Mountain map, to the R9E/R10E common boundary line at the northwest corner of section 6, T27S/R10E; then (11) Proceed north along the R9E/R10E common boundary line approximately 6.5 miles, crossing onto the Lime Mountain map, to the line's intersection with the second unnamed intermittent stream that crosses the western boundary line of section 31, T25S/R10E; then (12) Proceed easterly in a straight line approximately 0.45 mile to a marked 1,165-foot peak in section 31, T25S/R10E, and then continue easterly in a straight line approximately 0.8 mile to the marked 1,135-foot peak in section 32, T25S/R10E; then (13) Proceed due east-northeasterly in a straight line approximately 0.3 mile to the line's intersection with Dip Creek, section 32, T25S/R10E; then (14) Proceed southeasterly and then easterly along Dip Creek approximately 6 miles, crossing onto the Adelaida map, to the creek's intersection with San Miguel Road (locally known as Chimney Rock Road), section 13, T26S/R10E; then (15) Proceed easterly on San Miguel Road (locally known as Chimney Rock Road, then Nacimiento Lake Drive, then Godfrey Road, and then San Marcos Road) approximately 8.6 miles, crossing onto the Paso Robles map, to the road's intersection with an unnamed light-duty road locally known as Wellsona Road, section 6, T26S/R12E; then (16) Proceed southeasterly and then easterly on Wellsona Road approximately 2.0 miles, returning to the beginning point.