TERRAIN ANALYSIS
STREAM is terrain analysis software that turns a raw DEM into slope, hydrology, viewshed, sun-exposure and change-detection layers — entirely offline, on your own machine. Run the full suite directly on your DEM, view the results as a live color layer over the surface, and save them as raster or vector whenever you want.
Terrain analysis derives meaningful information from an elevation surface — steepness, flow, visibility, sun exposure and change over time. Each analysis reads the DEM and produces a new layer you can interpret and export.
Doing it in one offline desktop app keeps sensitive project data on your machine and the whole workflow fast.
Surface steepness and slope direction as color overlays, with direction isolation and a compass legend.
See what is visible from a point, and whether an obstacle blocks the line between two points.
Water flow, drainage and watershed analysis, plus contour generation at any interval.
Sunlight-hours with topographic shadow, and volume change with uncertainty between two surveys.
Most terrain analysis tools run in the cloud or inside a full enterprise GIS suite. STREAM runs the same slope, hydrology, viewshed, sun and change-detection analyses locally on Windows, with no upload step and no per-analysis cloud fee.
Draw an area or select one you drew earlier. The scope badge on every analysis panel shows which area the calculation will use.
Thresholds, intervals, mode, observer position or the scenario being compared — each analysis exposes its own set in one place.
The result is painted over the terrain immediately. Nothing is written to the project yet, so you can change a parameter and look again.
Read the legend, adjust the overlay opacity, and check the figures in the side panel.
Add the result to the layer list, or save it as a raster or a vector — and export PDF or CSV if it is going into a report.
Slope, aspect, viewshed, line-of-sight, hydrology, contour generation, sun & shadow, and change detection — all computed on the DEM.
Yes. Analysis results appear as a live color layer over the terrain, and can be saved as raster or vector.
Yes. All analysis runs locally on your computer; your data never leaves your machine.
STREAM runs slope, aspect, hydrology and watershed analysis in one desktop app, directly on your DEM, without exporting to a separate GIS tool.
Every analysis layer can be saved as raster or vector, ready to bring into other GIS or CAD software.
Free beta for Windows x64. Works fully offline with GeoTIFF, LAS/LAZ and DXF.
Download STREAM free