Loire Valley (wine) weather sometimes requiring that the must be heated in order to complete fermentation fully. The Loire Valley is often divided into three sections. The Upper Loire includes the Sauvignon blanc dominated areas of Sancerre and Pouilly-Fumé. The Middle Loire is dominated by more Chenin blanc and Cabernet franc wines found in the regions around Touraine, Saumur, Chinon and Vouvray. The Lower Loire that leads to the mouth of the river's entrance to the Atlantic goes through the Muscadet region which is dominated by wines of the Melon de Bourgogne grape. Spread out across the Loire Valley are 87 appellation under
Loire Channel to its new outfall into the Atlantic Ocean thereby creating the presently seen narrow terrain of gorges, the Loire Valley with alluvium formations and the long stretch of beaches along the Atlantic Ocean. The river can be divided into three main zones; the Upper Loire which is the area from the source to the confluence with the Allier, the middle Loire Valley which is the area from the Allier to the confluence with the Maine, about , and the Lower Loire which is the area from Maine to the estuary. In the upper basin the river flows through a