Digital Elevation Models (DMTI)
Digital Elevation Models produced by DMTI, consists of a digital representation of a portion of the earth's terrain over a two dimensional surface. Created from the interpolation of the National Topographic Database (NTDB) 1:50,000 scale digital mapping (Standards and Specifications V3.0 and later). 30 metre resolutions captured from 1:50,000 NTDB. 90 metre resolutions resampled from the 30 metre.