Martinelli Winery

Charles Ranch

Vineyard Overview

Martinelli Winery


Charles Ranch

Planted Area

5.45 acres


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3360 River Road
Windsor, CA, 95492




Everyvine Rating

Not rated

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Information about the planted areas of this vineyard

Grape Profile

Grape Details

Varietals: Chardonnay
Wine Regions: Fort Ross-Seaview, North Coast, Sonoma Coast, West Sonoma Coast
Hillside Locations: Yes

Vineyard Size

Planted Area: 5.45 acres

Wine History

There are currently no known wines associated with these grapes. Edit the vineyard blocks to add wines.

Farm Certifications

These blocks do not have any farm certifications

Land Profile


Elevation976.61 ft.
Slope21.3% (12.05°)
AspectSoutheast (157°)

Solar Radiation

Average Radiation TotalWH/m2
Growing Season135134.85

Climate Indices

Index Name
Growing Degree-Days2479.47
Huglin Index1908.11
Biologically Effective Degree-Days1488.55

Temperature & Rainfall

AverageHi °FLow °FRain in.
Growing Season74.548.710.19
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 (6)

  1. Block: 1 (0.54 acres)
    Grape: Chardonnay
    870.74 ft. | Hugo
    View block details
  2. Block: 2 (3.76 acres)
    Grape: Chardonnay
    948.99 ft. | Hugo
    View block details
  3. Block: 3 (0.49 acres)
    Grape: Chardonnay
    981.54 ft. | Hugo
    View block details
  4. Block: 4 (0.13 acres)
    Grape: Chardonnay
    1010.7 ft. | Hugo
    View block details
  5. Block: 5 (0.42 acres)
    Grape: Chardonnay
    1030.38 ft. | Hugo
    View block details
  6. Block: 6 (0.11 acres)
    Grape: Chardonnay
    1017.33 ft. | Hugo
    View block details

About Charles Ranch

The Charles Ranch was once one of the largest sheep ranches in Sonoma County. The Charles family raised sheep in this coastal countryside for over 130 years since acquiring the land during the Homestead Act. My grandfather, George Charles, was a fourth generation rancher in the vast rugged hills and raised 2,000 head of sheep along with a small herd of bison. The phasing out of the sheep industry in the 1970's forced George Charles to look at other agricultural avenues of profitability. Eventually sheep ranching became an unprofitable business when laws were passed in favor of coyotes and not ranchers. He was near retirement but wanted a continuing income from the ranch so his heirs would not lose their homeland to inheritance tax. Thus, the prospect of growing grapes emerged. George's son-in-law, Lee Martinelli Sr., was a successful third generation grapegrower and consulted with George as to which grape variety would be the most suitable to plant in this unique climate.

This distinct micro-climate is two miles inland from the Pacific coastline at Fort Ross and is ideally suited for growing Burgundian varietals. In 1980 George sold his buffalo herd and used the steep 14 acre pasture to plant Chardonnay, becoming a pioneer of grape growing in an area that is now considered a prime viticultural region.

The grapes are picked at 25 degrees brix to ensure mature ripe fruit flavors. They are hand selected at harvest time by Lee Martinelli and Helen Turley, who taste the grapes and choose when to pick according to the developed flavors in the berries. The wine is 100% barrel fermented with wild yeast and encouraged to fully complete malo-lactic fermentation. It is unfined and unfiltered and rests in 65% new French oak for 11 months before bottling. This is a handcrafted wine. It is unfined, unfiltered, neither cold nor heat stabilized and contains naturally occurring sediment.

Edit History

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Vineyard-ID: 3072
Created Date: December 1, 2012
Edit History: View Edit History of this Vineyard

Edit Permission

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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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