The Isle St. George AVA is an American Viticultural Area located on North Bass Island, Ohio, an island in Lake Erie. The only town on the Ottawa County island is also called Isle Saint George, although the "Saint" in the AVA name must be abbreviated as "St." to be used on wine labels. Over half of the island is planted to grapevines. Lake Erie is warmer than the other Great Lakes, providing a moderating and warming effect on the local climate.