The TTB has designated two AVAs in Colorado, which by no coincidence are located around the same areas where Colorado grows some of the greatest peaches, cherries, apples, pears and apricots in the world
Certain isolated river valleys provide the protected environments
required for wine grape growing in Colorado. The Grand Valley of the
Colorado River and the West Elks along the North Fork Valley of the
Gunnison River are home to nearly all of Colorado's vineyards. Wine
grapes have been grown in these areas in small family vineyards since
the end of the 19th Century.