The Merritt Island AVA is an American Viticultural Area

American Viticultural Area

An American Viticultural Area is a designated wine grape-growing region in the United States distinguishable by geographic features, with boundaries defined by the Alcohol and Tobacco Tax and Trade Bureau , United States Department of the Treasury....

 located in Yolo County

Yolo County, California

Yolo County is a county located in the northern part of the U.S. state of California, bordered by the other counties of Sacramento, Solano, Napa, Lake, Colusa, and Sutter. The city of Woodland is its county seat, though Davis is its largest city....

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. Part of the larger Clarksburg AVA

Clarksburg AVA

The Clarksburg AVA is an American Viticultural Area that spans three counties in California's Sacramento Valley. Located in portions of Sacramento County, Solano County, and Yolo County, the Clarksburg AVA includes near the towns of Clarksburg. The growing region has dense clay and loam soils...

, Merritt Island is a 5000 acres (2,023 ha) island in the Sacramento River Delta

Sacramento River Delta

The Sacramento-San Joaquin River Delta, or California Delta, is an expansive inland river delta and estuary in northern California in the United States. The Delta is formed at the western edge of the Central Valley by the confluence of the Sacramento and San Joaquin rivers and lies just east of...

. The island is surrounded by Elk Slough, Sutter Slough, and the Sacramento River

Sacramento River

The Sacramento River is an important watercourse of Northern and Central California in the United States. The largest river in California, it rises on the eastern slopes of the Klamath Mountains, and after a journey south of over , empties into Suisun Bay, an arm of the San Francisco Bay, and...

. The island soil is a very fertile and rich loam

Loam

Loam is soil composed of sand, silt, and clay in relatively even concentration . Loam soils generally contain more nutrients and humus than sandy soils, have better infiltration and drainage than silty soils, and are easier to till than clay soils...

. Cool breezes and fog

Fog

Fog is a collection of water droplets or ice crystals suspended in the air at or near the Earth's surface. While fog is a type of stratus cloud, the term "fog" is typically distinguished from the more generic term "cloud" in that fog is low-lying, and the moisture in the fog is often generated...

 arriving from the nearby San Francisco Bay

San Francisco Bay

San Francisco Bay is a shallow, productive estuary through which water draining from approximately forty percent of California, flowing in the Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean...

 create a cool maritime climate. Most grapes grown on Merritt Island are used in blends with grapes from other parts of the state.