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California Wine Atlas

Paso Robles Geneseo District

Sub-AVA · San Luis Obispo County · District 8

27 CFR 9.242 · established 2014-10-09

Heat class IV · 1991-2020 normals

Climate normals in three numbers

3,532°F-days

, Apr 1 – Oct 31

11 GridMET cells cover this region

IV

53mm

season rain, Apr 1 – Oct 31

20 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 Paso Robles Geneseo District

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What's in the ground

7.3

pH, 1:1 water

14.1cm

, whole profile

98cm

to

Well drained

, dominant condition

Distribution across 40 · mean ◆, median │, p10–p90 bar

7.3
2.2%
25.5%
available water
14.1cm
depth to restriction
98cm

Dominant

  • 51.4%
  • 20.6%
  • 10.7%
  • 3.5%
  • 3.4%

40 map units · soil described over 99.9% of the region’s area · 0.5% is water, rock outcrop or other non-soil · 77% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Loam

39% sand · 35% silt · 25% clay

Sandier than 36% of California appellations and clayier than 77%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.

Plus 10% 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 (699 words)

(c) Boundary. The Paso Robles Geneseo District is located in San Luis Obispo County, California. The boundary of the Paso Robles Geneseo District is as described below: (1) The beginning point is on the Paso Robles map at the intersection of State Route 46 and Golden Hill Road at the northwest corner of section 26, T26S/R12E. From the beginning point, proceed east on State Route 46 for 1 mile to the southwest corner of section 24, T26S/R12E; then (2) Proceed northeast in a straight line approximately 1.45 miles, crossing onto the Estrella map, to the northwest corner of section 19, T26S/R13E; then (3) Proceed east along the northern boundary lines of sections 19 and 20, T26S/R13E, to the section 20 boundary line's intersection with State Route 46 and then continue east on State Route 46 to the road's intersection with the eastern boundary line of section 24, T26S/R13E; then (4) Proceed easterly in a straight line less than 0.1 mile to the intersection of an unnamed light duty road locally known as River Grove Drive and an unnamed unimproved road in Whitley Gardens, section 19, T26S/R14E; then (5) Proceed south on the unnamed unimproved road approximately 2 miles to the road's intersection with the southern boundary line of section 30, T26S/R14E; then (6) Proceed west-southwesterly in a straight line approximately 1.9 miles, crossing onto the Creston map, to the intersection of an unnamed light duty road locally known as Geneseo Road and an unnamed unimproved road locally known as Dry Canyon Road (just east of a windmill within Dry Canyon), section 35, T26S/R13E; then (7) Proceed south on Geneseo Road approximately 1 mile to the road's intersection with the eastern boundary line of section 3, T27S/R13E (near BM 1200); then (8) Proceed south along the eastern boundary lines of sections 3, 10, and 15, T27S/R13E, approximately 1.9 miles to the first intersection of the section 15 eastern boundary line with the unnamed light-duty road locally known as Geneseo Road, section 15, T27S/R13E; then (9) Proceed south-southeasterly on Geneseo Road approximately 0.85 mile to the road's intersection with an unnamed light duty road locally known as Creston Road, Huerhuero Land Grant, T27S/R13E; then (10) Proceed west on Creston Road 0.5 mile to the road's intersection with a marked, unnamed light-duty road (locally known as a private driveway located approximately 430 feet east of Old Ford Road), southern boundary of section 15, T27S/R13E; then (11) Proceed north on the marked, unnamed light-duty road (locally known as a private driveway located approximately 430 feet east of Old Ford Road) approximately 0.3 mile to the road's end, section 15, T27S/R13E; then (12) Proceed west-northwesterly in a straight line approximately 0.6 mile to the 1,342 foot elevation point in section 15, T27S/R13E, and then continue west-northwesterly in a straight line approximately 0.6 mile to an unnamed peak above the 1,380-foot elevation line (marked on the map with a triangle), section 16, T27S/R13E; then (13) Proceed westerly in a straight line approximately 0.75 mile to the 1,255-foot elevation point in the northwest quadrant of section 16, T27S/R13E; then (14) Proceed northwesterly in a straight line approximately 1.4 miles to the confluence of Huerhuero Creek and an unnamed intermittent stream in the northwest quadrant of section 8, T27S/R13E; then (15) Proceed northwesterly (downstream) along Huerhuero Creek approximately 2.4 miles to the creek's intersection with the R12E/R13E common boundary line, section 31, T26S/R13E; then (16) Proceed westerly in a straight line approximately 2.3 miles, crossing onto the Templeton map, to the line's intersection with the junction of a marked telephone line and an unnamed light duty road locally known as Creston Road (approximately 1.3 miles due east of U.S. Route 101 in the Santa Ysabel Land Grant, T26S/R12E; then (17) Proceed west on Creston Road approximately 0.05 mile to the road's intersection with an unnamed light-duty road locally known as Rolling Hills Road, Santa Ysabel Land Grant; then (18) Proceed north on Rolling Hills Road, crossing onto the Paso Robles map (where a portion of Rolling Hills Road is labeled Golden Hill Road), and continue north on Rolling Hills Road and then Golden Hill Road (a total distance of approximately 1.5 miles), returning to the beginning point.