Hydro-basins (level 3)

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    Hydro-basins (level 3)

    Hydro-basins provide hydrographic data layers that allow for the derivation of watershed boundaries for any given location based on the near-global, high-resolution SRTM digital elevation model. Watersheds were delineated in a consistent manner at different scales, and a hierarchical sub-basin breakdown was created following the topological concept of the Pfafstetter coding system (Verdin & Verdin 1999). The resulting polygon layers are termed HydroBASINS and represent a subset of the HydroSHEDS database. There are 12 levels. Level 3 represent major river systems from headwaters to coast.

    Open Development Thailand | https://thailand.pp.opendevelopmentmekong.net/layers/hydro-basins-level-3/ Created date: 15 Nov 2024
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