Missouri Rivers

Flow Accumulation · 30 m DEM

What you're looking at

Yellow raster: every drop of upstream drainage at 30 m, log-scale. Mint vector lines: the stream network extracted from that same raster, with line widths scaled by Strahler order (1=headwater, 8=Mississippi). Click any stream to see its order.

Watershed Stats

SourceUSGS 3DEP 30 m

Pixels processed~770 million

Max accumulation260 M cells

≈ Drainage area234,000 km²

Stream segments41,975 (vector)

Max Strahler order8 (Mississippi)

AlgorithmD8 + Strahler

ToolWhitebox Tools

Major Rivers

Mississippi (outflow)~260 M
Missourimajor
Osagemajor
Gasconademajor
Meramecmajor
White (HQ)major

How it works

Every pixel of the DEM has a downhill neighbor. Routing each cell to its downstream neighbor (D8) and summing how many cells drain through each gives a flow accumulation raster. The Mississippi at the eastern edge of this tile drains 234,000 km² of upstream Missouri.

Pitch context: this is the same engine that renders a 160-acre RTK survey at sub-meter resolution. The pipeline doesn't change — only the bounding box.

Sources & tools listed at /data