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Wahluke Slope AVA - Wikipedia

Coordinates: 46°45′50″N 119°55′52″W / 46.76395643°N 119.93106302°W

From Wikipedia, the free encyclopedia

Wahluke Slope
Wine region

Type	American Viticultural Area
Year established	2006^[1]
Country	United States
Part of	Washington, Columbia Valley AVA
Other regions in Washington, Columbia Valley AVA	Ancient Lakes of Columbia Valley AVA, Horse Heaven Hills AVA, Naches Heights AVA. Lake Chelan AVA, The Burn of Columbia Valley AVA, Rocky Reach AVA, Royal Slope AVA, Walla Walla Valley AVA, White Bluffs AVA
Climate region	Dry & warm
Total area	81,000 acres (330 km²)
Size of planted vineyards	5,200 acres (21 km²)
No. of vineyards	20
Grapes produced	Cabernet Franc, Cabernet Sauvignon, Chardonnay, Gewurztraminer, Grenache, Merlot, Mourvedre, Petit Verdot, Sangiovese, Sauvignon blanc, Syrah, Viognier, Zinfandel^[2]
Wine produced	Varietal, Dessert wine, Sparkling wine, Meritage

Wahluke Slope is an American Viticultural Area (AVA) located within Grant County, Washington. It was established on January 6, 2006, by the Alcohol and Tobacco Tax and Trade Bureau (TTB), Treasury after reviewing the petition submitted by the Wahluke Slope Wine Grape Growers Association (WSWGGA), represented by Alan J. Busacca, Ph.D., proposing the establishment of the viticultural area named "Wahluke Slope."

Wahluke Slope is approximately 145 miles (233 km) southeast of Seattle and immediately north of the Hanford Reservation of the United States Department of Energy (USDOE). "Wahluke" is a Native American word for "watering place," The appellation is within the vast Columbia Valley AVA and encompasses 80,490 acres (126 sq mi) with approximately 8,931 acres (3,614 ha) under vine which is nearly 15 percent of the state's total wine grape acreage. It is resident to more than 20 vineyards and at least three wine production facilities.^[1]^[3] The region cultivates Merlot, Syrah, Cabernet Sauvignon, Riesling, Chardonnay and Chenin Blanc, but is primarily known for its Merlot and Cabernet Sauvignon.^[4]

Geography and climate

Wahluke Slope viticultural area is located on 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 acres (127 sq mi) 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 (2 m). 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, as of 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]

Wahluke Slope Vineyards with the Sentinel Gap in the Saddle Mountains in late winter.

References

^ ^a ^b "Establishment of the Wahluke Slope Viticultural Area (2005R–026P)" (27 CFR 9 [T.D. TTB–40; Re: Notice No. 46] RIN 1513–AB01 Final Rule). Federal Register. 70 (234). Alcohol and Tobacco Tax and Trade Bureau (TTB), Treasury: 72707–72710. December 7, 2005. Archived (PDF) from the original on April 18, 2023. This article incorporates text from this source, which is in the public domain.
^ ^a ^b "Wahluke Slope (AVA): Appellation Profile". Appellation America. 2007. Archived from the original on March 3, 2016. Retrieved January 30, 2008..
^ ^a ^b "Wahluke Slope". Washington State Wine. Retrieved July 8, 2018.
^ Parker, Tom (September 1, 2002). Discovering Washington Wines. Seattle, Wash: Raconteurs Press. pp. 32-33, 54. ISBN 0-9719258-5-2.
^ Markell, Joanna (February 10, 2022), "Washington officially has a new all-time maximum temperature record: 120 degrees", Yakima Herald-Republic
^ "ZIP Code Tabulation Area: ZCTA5 99349". United States Census Bureau. Retrieved December 21, 2022.

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46°45′50″N 119°55′52″W / 46.76395643°N 119.93106302°W / 46.76395643; -119.93106302

Washington hills and ridges

Eastern
Washington

Yakima Fold Belt	Ahtanum Ridge Badger Mountain Beezley Hills Candy Mountain Columbia Hills Frenchman Hills Horse Heaven Hills (Jump Off Joe) Manastash Ridge Rattlesnake Hills Rattlesnake Mountain Red Mountain Saddle Mountains Snipes Mountain Umtanum Ridge Wahluke Slope Yakima Ridge
Steptoes	Kamiak Butte Steptoe Butte
Other	Dishman Hills Palouse Hills

Western
Washington

Pacific Coast Ranges incl. Olympic Mountains foothills	Black Hills (Capitol Peak, Larch Mountain) Doty Hills Satsop Hills Willapa Hills (Boistfort Peak)
Other	Blue Hills Issaquah Alps Kitsap County Puget Lowland

Olympic–Wallowa Lineament

List of mountain ranges in Washington

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