DEM-only hydrology
D8
DEM tiles
AWS Terrarium (≈30 m, global)
Custom Terrarium…
Template
Terrarium encoding:
R*256 + G + B/256 − 32768
. Paste your own 10 m tiles here.
Compute zoom
Higher = finer pixels (resampled if DEM is coarser)
Patch size
3×3 tiles (~768×768)
5×5 tiles (~1280×1280)
7×7 tiles (~1792×1792)
Stream thr.
cells upstream
Clear
Click the map to delineate.