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SITE UNDER DEVELOPMENT

Global hydrography

Hydrography for every land pixel.

Full means every land pixel of the source grid is a site, with its own place in the drainage network.

It arrives precomputed — tables and layers you can use directly.

What is here

The Flow packages are the methods, and the Full datasets are what they compute: run them on a flow-direction grid — and, for the terrain attributes, the elevation that goes with it — and you get FullBasin.

  • Tools

    The Flow packages: the methods, released on their own. What they read is a D8 flow-direction grid and its elevation, not a particular dataset.

  • Datasets

    The Full series: what the tools compute, precomputed and ready to download. FullBasin is out in full on MERIT Hydro at 90 m; at 30 m on HydroSHEDS v2 the basin and region masks are out for North and South America, and the per-pixel layers follow.

  • Applications

    Studies that used them for a question of their own, each naming the release it was built on.

Where FullHydro starts

Where FullHydro starts, and what it makes Work by data providers: acquire and mosaic elevation tiles, fill depressions and correct drainage pathways, and derive a D8 flow-direction grid; MERIT Hydro, HydroSHEDS and others, and conditioning methods differ by dataset. Our work starts from that grid. Trees: the flow directions encoded as trees; the same nine cells are drawn again as the tree they form, rooted at the outlet, with the one picked-out cell and the three cells that drain into it. Outputs: per-pixel rasters, attribute tables and vectors. Work by data providers MERIT Hydro · HydroSHEDS · others — conditioning methods differ by dataset Our work FullHydro starts here outlet Rasters Tables Vectors DEM Acquire and mosaic elevation tiles Conditioning Fill depressions, correct pathways Flow directions The D8 flow-direction grid Trees The flow directions, encoded as trees Outputs Per-pixel rasters, attribute tables, vectors
Data providers make the flow-direction grid; FullHydro starts from it and ends in rasters, tables and vectors. Scroll to see the full workflow →

Contact

FullHydro is built and maintained mainly by Lulu Jiang, an independent researcher with a PhD from Peking University (2020). Corrections, questions and data requests are welcome.

Open to work — from February 2027

I am looking for a full-time position, academic or industry, starting after the Lunar New Year in February 2027. If FullHydro looks like the kind of work you need, please get in touch: [email protected]

My background, papers and how to support FullHydro · lulujiang.me →