Wahluke Slope AVA

Established in 2006 The Wahluke Slope AVA Wahluke, was named after a Native American word for "watering place," is an American Viticultural area located within Grant County, Washington and is home to more than 20 vineyards and at least three wine production facilities. It is part of the larger Columbia Valley AVA. The 80,490 acre region features approximately 8,931 acres of vineyards: nearly 15 percent of the total wine grape acreage in the state.[3] Top grape varieties: Merlot, Syrah, Cabernet Sauvignon, Riesling, Chardonnay, and Chenin Blanc, but this area is primarily known for Merlot and Cabernet Sauvignon.[4]

Wahluke Slope
Wine region
TypeAmerican Viticultural Area
Year established2006[1]
CountryUnited States
Part ofWashington, Columbia Valley AVA
Climate regionDry & warm
Total area81,000 acres (330 km2)
Size of planted vineyards5,200 acres (21 km2)
No. of vineyards20
Grapes producedCabernet Franc, Cabernet Sauvignon, Chardonnay, Gewurztraminer, Grenache, Merlot, Mourvedre, Petit Verdot, Sangiovese, Sauvignon blanc, Syrah, Viognier, Zinfandel[2]
Wine producedVarietal, Dessert wine, Sparkling wine, Meritage

Geography and climate

The Wahluke Slope AVA is located in the Wahluke Slope of Grant County, Washington. It extends from the Columbia River in the west, the Hanford Site boundary in the southwest, the north bank of the Columbia River on the south up to the Wahluke Slope Wildlife Refuge in the east, and along the 1,480-foot (450 m) elevation of the Saddle Mountains on the north. Wahluke Slope has one of the driest, warmest climates in the state, allowing nearly complete control of vine vigor and ripening through irrigation.[2]

The entire 81,000-acre appellation sits on a large alluvial fan, making the soils notably uniform over a large area. The topsoil is deep, wind-blown sand with a depth, on average, of more than 5 feet (150 cm). This provides both ample drainage for vinifera vines and greater uniformity in plant vigor and ripening than seen in other areas of Washington. The major distinguishing feature of the Wahluke Slope is its uniformity in aspect, soil type, and climate. The entire appellation lies on a broad, south-facing slope with a constant, gentle grade of less than 8%. This, along with the proximity to the Columbia River, helps minimize the risk of frost, which can affect other areas of the state.[3]

The highest temperature ever measured in Washington state, up until 2021, was recorded at Wahluke on July 24, 1928, at 118 °F (47.8 °C). This record was later tied at Ice Harbor Dam in 1961. The temperature was eventually surpassed on June 29, 2021, when Hanford reached 120 °F (48.9 °C).[5]

The area is largely within the Mattawa, Washington 99349 area code.[6]

See also

References
  1. "§ 9.192 Wahluke Slope" (Title 27: Alcohol, Tobacco and Firearms; Part 9 — American Viticultural Areas; Subpart C — Approved American Viticultural Areas). Code of Federal Regulations. Retrieved January 30, 2008.
  2. "Wahluke Slope (AVA): Appellation Profile". Appellation America. 2007. Archived from the original on March 3, 2016. Retrieved January 30, 2008..
  3. "Wahluke Slope". Washington State Wine. Retrieved July 8, 2018.
  4. Parker, Tom (2002). Discovering Washington Wines. Raconteurs Press. ISBN 0-9719258-5-2.
  5. Markell, Joanna (February 10, 2022), "Washington officially has a new all-time maximum temperature record: 120 degrees", Yakima Herald-Republic
  6. "ZIP Code Tabulation Area: ZCTA5 99349". United States Census Bureau. Retrieved December 21, 2022.
Vineyards in the Wahluke Slope AVA of Washington State in late winter. The Sentinel Gap in the Saddle Mountains can be seen in the distance.

46°45′N 119°50′W

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