High Valley AVA

{{Use mdy dates|date=March 2021}}

{{Infobox wine region

| name = High Valley AVA

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| type = American Viticultural Area

| year = 2005{{cite web |url=https://www.ecfr.gov/cgi-bin/retrieveECFR?gp=1&SID=9294e71d0d39d2db5eb5e1cbd23ed14b&ty=HTML&h=L&mc=true&r=SECTION&n=se27.1.9_1189|website=Code of Federal Regulations |title=§ 9.189 High Valley |format=Title 27: Alcohol, Tobacco and Firearms; Part 9 — American Viticultural Areas; Subpart C — Approved American Viticultural Areas |accessdate=January 21, 2008}}

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| country = United States

| part of = Lake County, Clear Lake AVA

| similar = Big Valley District-Lake County AVA, Clear Lake AVA, Guenoc Valley AVA, Kelsey Bench-Lake County AVA, Long Valley-Lake County AVA, Red Hills Lake County AVA, Upper Lake Valley AVA{{cite web |url=https://www.lakecountywinegrape.org/region/lake-county-ava/ | website=Lake County Winegrape Growers |title=Lake County Appellations |accessdate=2020-05-08|df=mdy-all}}

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| total size = {{convert|15000|acre|km2}}{{Citation needed|date=January 2008}}

| planted = {{convert|700|acre|km2}}{{Citation needed|date=January 2008}}

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High Valley is an American Viticultural Area (AVA) located in the eastern part of Lake County, California. True to its name, the valley is situated on high elevations ranging from {{convert|1600|ft|m}} to {{convert|3000|ft|m}}, but it actually encompasses two distinct growing regions, the valley floor and the hillsides. The cool marine breezes are consistently sifting into the valley, keeping the valley cooler than the other appellations in Lake County. Red volcanic soils can be found on the hillsides while alluvial fans and benches on the valley floor provide well-drained beds for the vines. Red Bordeaux varietals and Syrah can be found planted along warmer ridges, while the cooler valley floor contains Pinot grigio, Pinot noir, Chardonnay, Riesling and Sauvignon blanc.{{Cite web|url=https://www.lakecountywinegrape.org/region/lake-county-ava/high-valley-ava/|title=High Valley AVA|website=Lake County Winegrape Commission|access-date=2019-12-30|df=mdy-all}}

The valley itself is {{convert|9|mi|km}} long and {{convert|3|mi|km}} wide, with an east–west orientation unusual in the Californian coastal range, a result of volcanic activity of Round Mountain, an extinct volcano lying within the valley. The AVA contains {{convert|15000|acre|km2}}, and about {{convert|700|acre|km2}} are currently planted in vineyards. Most are relatively new, but within the area are some of the oldest vines in California. There are 15 struggling Zinfandel and Muscat vines planted by the Ogulin family, which brought them from Slovenia around 1875. Since Slovenia borders Croatia, where cousins of Zinfandel vines are found, this suggests significance in the history of California Zinfandel. The old vines shouldn't be a surprise, for before Prohibition, Lake County was producing reputable wines before the vineyards were replaced with other crops.{{Cite web|url=https://www.lakecountywinegrape.org/region/history-of-the-lake-county-wine-industry/|title=History of the Lake County Wine Industry|website=Lake County Winegrape Commission|access-date=2019-12-30|df=mdy-all}}

Significant vineyard holders in the AVA include Brassfield Estate Winery, which estate sits on the valley floor and Shannon Family of Wines.