The Napa Valley region of Calistoga in California has been awarded American Viticultural Area (AVA) status.

The region gained its own AVA this week, when the move was approved by the Alcohol Tax and Trade Bureau of the US Department of Treasury.

Trade body Napa Valley Vintners (NVV) has welcomed the move. "The region recently saw an increase in wine producers falsely using the name Calistoga in their brand labelling and thereby undermining the hard work and quality reputation of the long-time growers and vintners from Calistoga," a spokesperson for the organisation said.

NVV executive director Linda Reiff credited the move in part to efforts by US Representative Mike Thompson.

"We could not have achieved this incredible victory for wine consumers and the wine industry had it not been for Congressman Mike Thompson, who worked tirelessly to ensure truth-in-wine-labelling for consumers and intimately understands the need for forthright protection of wine's place of origin."

Calistoga is itself with the Napa Valley AVA region.