Two Rock

Information about the planted areas of this vineyard

Grape Profile

Grape Details

Varietals: Chardonnay
Wine Regions: North Coast, Petaluma Gap, Russian River Valley, Sonoma Coast

Vineyard Size

Planted Area: 419.53 acres

Wine History

Grapes from these blocks have been used in the following wines:
Wine (Vintage)PriceScore
1. Gallo Family Vineyards Pinot Noir Winemaker's Signature (2007)$4089
2. Gallo Family Vineyards Chardonnay Two Rock (2007)$2892

Farm Certifications

These blocks do not have any farm certifications

Land Profile


Elevation276.15 ft.
Slope9.6% (5.51°)
AspectSouth (170.32°)

Solar Radiation

Average Radiation TotalWH/m2
Growing Season145424.8

Climate Indices

Index Name
Growing Degree-Days2722.88
Huglin Index2095.69
Biologically Effective Degree-Days1673.46

Temperature & Rainfall

AverageHi °FLow °FRain in.
Growing Season77.148.35.38
For more detailed information about the topography, climate, and soil of the vineyard blocks that grew these grapes, click on the individual blocks in the block list.

What's Available

No winegrapes or bulk wine sourced from this vineyard are currently available...

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Block List

Planted Areas of this Vineyard (10)

  1. Block: 1 (124.46 acres)
    Grape: Unknown
    324.19 ft. | Cotati, Sebastopol
    View block details
  2. Block: 2 (2.17 acres)
    Grape: Unknown
    248.07 ft. | Cotati
    View block details
  3. Block: 3 (24.03 acres)
    Grape: Unknown
    216.34 ft. | Cotati, Los Osos
    View block details
  4. Block: 4 (12.85 acres)
    Grape: Unknown
    257.85 ft. | Sebastopol
    View block details
  5. Block: 5 (29.8 acres)
    Grape: Unknown
    266.95 ft. | Cotati, Sebastopol
    View block details
  6. Block: 6A (142.81 acres)
    Grape: Unknown
    327.91 ft. | Cotati, Sebastopol
    View block details
  7. Block: 7 (18.13 acres)
    Grape: Unknown
    235.23 ft. | Cotati, Sebastopol
    View block details
  8. Block: 8 (21.15 acres)
    Grape: Unknown
    249.46 ft. | Cotati, Los Osos, Sebastopol
    View block details
  9. Block: 9 (35.59 acres)
    Grape: Unknown
    279.45 ft. | Cotati, Los Osos, Sebastopol
    View block details

Edit History

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Vineyard-ID: 1927
Created Date: Unknown
Edit History: View Edit History of this Vineyard

Edit Permission

Unlocked: Anyone may edit this vineyard

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Data Notes and References


Farm Certifications: See the certifications page to learn more about the farm certifications Everyvine tracks.
Soil Horizon: Bedrock value set to "-" is not available. Available water capacity units are cm/cm.
Solar Radiation: Area Solar radiation has been calculated in watt hours per square meter (WH/m2)
Topography: Topography values are averaged over the block area. Aspect is expressed in positive degrees from 0 to 359.9, measured clockwise from north.
Growing Season: For use in various statistical averages, Everyvine defines the vineyard growing season as the period April 1st to October 31st.


The vineyard data presented here is most often sourced from the public data sources listed below. However, Everyvine also accepts data from vineyard owners who often have even better data they have collected themseleves.

If you have more accurate data on a vineyard go to: Data Submission page.

Topography: Topographic and solor radiation calculations are based on 1/3 arc-second (approx. 10m) elevation models. Data provided by U.S. Geological Survey (USGS), EROS Data Center, National Elevation Dataset,, 1999
Climate Indices: Calculations based on methodologies described by Gregory Jones and John Gladstones. See the following:
  • Jones, G.V, Duff, A.A., Hall, A., and J. Myers (2009). Spatial analysis of climate in winegrape growing regions in the western United States.” American Journal of Enology and Viticulture, in Press Spring 2010.
  • Gladstones, J. (1992) Viticulture and environment (Winetitles: Adelaide).
Month Climate Averages: Monthly and annual temperature and rainfall values based on 30-arcsec (800m) normals for the climatological period 1971-2000. Data provided by PRISM Climate Group, Oregon State University,, October 31,2008
Soil: Soil data is collected from the following sources:
  • SSURGO: Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture. Soil Survey Geographic (SSURGO) Database. Available online at
  • STATSGO2: Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture. U.S. General Soil Map (STATSGO2). Available online at
  • Web Soil Survey: Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture. Web Soil Survey. Available online at
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