A 1 m global elevation model, within a metre of LiDAR
Terrain is the hidden input behind flooding, erosion, drainage, line-of-sight, drill targeting and earthworks. Yet the elevation data most projects fall back on isn't accurate enough for parcel- or channel-scale work.
The gap between public DEMs and LiDAR
Public DEMs — SRTM, ASTER, Copernicus — are 30 m with 5–16 m of vertical error, far too coarse for the features that decide drainage or excavation. Survey-grade airborne LiDAR has the accuracy but is expensive, episodic, and unavailable for most of the world. Between them sits everything that needs metre-scale terrain over large areas.
A consistent global product
EarthToDate BaseDEM delivers 1 m horizontal and 0.5–1 m vertical accuracy globally, resampled to 1 m with 3–4 m effective detail. Independent reviewers place it within a metre, vertically, of airborne LiDAR — as a consistent worldwide product rather than a one-off survey.
It is the terrain foundation under flood simulation, GLOF discharge modelling, fire-cascade erosion maps and mining volumetrics — the same elevation layer everywhere, so results are comparable across sites and borders.