Lewis-Clark Valley AVA, approved in 2016, covers approximately 307,000 acres of Idaho and Washington states. In the process of submission and approval 57,020 acres were removed from the Columbia Valley AVA, eliminating an overlap with the new AVA. Petitioners were very fixed on Idaho presence.
At approval only 80 acres of vineyard exists from a cumulative 16 vineyards, most very small and spread awash across the boundaries. An interesting assortment of 23 differing varieties with Merlot and Cabernet Sauvignon prominent on Reds and, predictably Riesling tops among white varieties.