Vector tiles

OS Terrain 50 contour layers are supplied as a national vector tiles set in a single MBTiles file. This is a lightweight set of tiles that are efficient and fast to render in your software, provide high-resolution data, and which give a seamless experience when zooming in and out. The data is supplied in Web Mercator projection (ESPG:3857).

For guidance on using the product in vector tiles format, please see the Getting Started with Vector Tiles guide.

Data schema

The vector tiles schema is detailed in the following table. In the Zoom levels columns within the table, the letter N indicates that the specified layer and attribute are not mapped within that zoom level, whereas the letter Y indicates that the specified layer and attribute are mapped within that zoom level.

contour_line

Attribute	Zoom level: 0 to 8	9	10	11	12	13	14
id	N	Y	Y	Y	Y	Y	Y
property_value	N	Y	Y	Y	Y	Y	Y
contour_line_type	N	Y	Y	Y	Y	Y	Y

spot_height

Attribute	Zoom level: 0 to 8	9	10	11	12	13	14
id	N	Y	Y	Y	Y	Y	Y
property_value	N	Y	Y	Y	Y	Y	Y
spot_height_type	N	Y	Y	Y	Y	Y	Y

land_water_boundary

Attribute	Zoom level: 0 to 8	9	10	11	12	13	14
id	N	Y	Y	Y	Y	Y	Y
property_value	N	Y	Y	Y	Y	Y	Y
water_level_category	N	Y	Y	Y	Y	Y	Y