Grower Resources

Weather and Climate

View current weather data, download climate reports, and sign up to receive Lake County weather alerts on the Weather & Climate Resources page.

Market Research

Learn about supply and demand trends and forecasts for Lake County wines and winegrapes in “Supply and Demand for Lake County Winegrapes and Wines,” a custom research report prepared by Christian Miller of Full Glass Research. Commissioned by the Lake County Winegrape Commission, the research report provides both quantitative and qualitative data with an emphasis on Lake County’s two main varietals – Cabernet Sauvignon and Sauvignon Blanc – and includes results from a comprehensive 2014 survey of Lake County winegrape buyers.

Sustainable Winegrowing Information

The California Sustainable Winegrowing Alliance (CSWA), Wine Institute, and California Association of Winegrape Growers offer the California Code of Sustainable Winegrowing Workbook online, free of charge, to all California vintners and growers.

Fire Resources

In 2018, wildfires impacted parts of western and northern Lake County. While most vineyards suffered little or no damage – and in some cases even acted as a firebreak that helped to slow the spread of the fires – a handful of vineyards in Lake County were affected. For those growers, resources for remediation and rebuilding are available. Information is available on the Fire Resources page.

Water/Drought Resources

In response to the statewide drought situation, the Lake County Winegrape Commission has gathered the following resources and information relevant to Lake County winegrowers.

Top Four Myths of the California Drought: Pervasive myths about water use continue to circulate in the media. Help separate myth from fact with this post from the Northern California Water Association. Click to read more.

Vineyard Water Use in Lake County, California (December 1, 2014) by Glenn McGourty, Winegrowing and Plant Science Advisor, UCCE Mendocino and Lake Counties, et al. A brief summary of vineyard water use in two of the main winegrape growing areas in Lake County – Big Valley and Red Hills. Click to view document.

Water Stewardship in Drought Conditions: On April 9, 2015, the Lake County Winegrape Commission, Lake County Farm Bureau, and UC Cooperative Extension collaborated to present Water Stewardship in Drought Conditions, an in-depth seminar focused on the state of water in Lake County. Download speaker presentations from the event.

Lake County Farm Drought Response: On February 26, 2014, the Lake County Winegrape Commission partnered with the Lake County Farm Bureau to present Lake County Farm Drought Response, a forum for drought-related information exchange. View a video of the event. (2 hours, 55 minutes)

Living with Drought: A one-stop resource compiled by UC Cooperative Extension with links to several UC, state, and national resources.

Vineyard Irrigation with a Limited Supply of Water: Presentation by Glenn McGourty, UC Cooperative Extension, Lake and Mendocino Counties.

NOAA Drought Monitor: The North American Drought Monitor (NADM) is a cooperative effort between drought experts in Canada, Mexico and the United States to monitor drought across the continent on an ongoing basis.

California Department of Food and Agriculture: The California Department of Food and Agriculture maintains a Drought Resource web page as a valuable tool for farmers, ranchers, and farmworkers seeking information about the drought in California and available assistance programs.

Drought Information: Information gathered by the County of Lake Water Resources Department.

For insight into water-related viticultural practices in Lake County, view a number of short educational videos in the Grower Education section.

Lake County Viticultural Soils

The USDA Natural Resources Conservation Service maintains a soil survey of all the soils in the nation. To find the soil type(s) for a specific parcel, go to the Web Soil Survey (WSS).

Click on the big green button to begin (Start WSS). Select state and county, click View. Then, using the tools in the upper left section of the map area, zoom in or out to navigate to the parcel, then click the AOI tool to select the specific parcel. The results will identify your Area of Interest with blue hash marks; click the Soil Map tab at the top to view the various soil types by number. To the left of the map, a list will show each soil type by name and percent. Click on each soil type for more information.

For detailed information about specific Lake County soil types to assist with soil evaluation and site management, refer to the USDA’s document, Soil Survey of Lake County, California.

Crush Reports

2016 Final Grape Crush Report
2015 Final Grape Crush Report
2014 Final Grape Crush Report
2013 Final Grape Crush Report
2012 Final Grape Crush Report
2011 Final Grape Crush Report
2012 Final Crush Report Yearly Comparison

Crop Reports

These reports are available on the County of Lake website:

2015 Crop Report
2014 Crop Report
2013 Crop Report
2012 Crop Report
2011 Crop Report
2010 Crop Report
2009 Crop Report
2008 Crop Report
2007 Crop Report
2006 Crop Report
2005 Crop Report
2004 Crop Report
2003 Crop Report

Calendar of Events

Sun Mon Tue Wed Thu Fri Sat
Post-Harvest Grape Grower Tailgate 9:00 am
Post-Harvest Grape Grower Tailgate @ Sauvignon Blanc vineyards in Big Valley
Oct 30 @ 9:00 am – 11:45 am
Topics include: • Vine Hardening and Fall Freeze Preparation  • Impact of Fall Freezes on Sauvignon Blanc in Big Valley • Grapevine Trunk Diseases: Effective Control Practices • Esca in the Sauvignon Blanc Vineyard •[...]
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