National Topographic System Index (NTS) - 250 Grid

Coordinate system: 4269 - "NAD83"


A grid series composed of 89 grid cells at a scale of 1:250 000.

The National Topographic System (NTS) is a system of divisions used primarily for topographic maps of the Canadian landmass. Maps at the 1:250000 scale are identified by a combination of numbers and letters from A to P (e.g. 13C). A map at the 1:50 000 scale corresponds to 1/16 of a map at the 1:250 000 scale, with each unit number from 01 to 16. Adding the unit number to the 1:250 000 number produces a unique identifier (e.g. 13C09).

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