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EROSION AND RIVER BASIN MAP
Terrain Erosion Watershed Lab
Generate a 3D terrain heightfield, trace watershed paths, simulate simple erosion passes and export basin diagnostics, height CSV, SVG map, Markdown brief and JSON receipt.
Reviewed 2026-06-29
EducationDeterministic seeded heightfieldSteepest-descent runoff tracingSimple erosion pass metricsCSV/SVG/Markdown/receipt exports
WHY THIS BELONGS ON FASTTOOL
A visually serious tool should produce an artifact, not a paragraph.
This page creates a 3D scene, an inspectable projection, a ledger, a written proof brief and a receipt that humans and AI agents can compare.