Ontario: O. Reg. 359/24 under the VQA Act, areas defined by roads and natural features. British Columbia: GIs under the Wines of Marque Regulation, defined by watersheds and schedule maps.
Outline: Built from the administrative units that contain the area. The legal boundary follows other lines (roads, rivers, farms or altitude), so the real area is smaller.
Distances from the centre of the place. Towns: GeoNames (CC BY 4.0). Sea, rivers and lakes: Natural Earth.
Terrain
Elevation
165–184 m
Mean elevation
175 m
Mean slope
0.4° (1 %)
Steepest tenth
above 1°
Faces
several directions, mostly west
Measured over the whole outline on 51,708 elevation cells of about 28 m (Mapterhorn terrain tiles). The outline is made of whole communes or districts, so it includes land that is not vineyard.
Sources
geoBoundaries CAN ADM3 (2016) (Open Data Commons Open Database License 1.0)