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Global potential Simulated Topological Network at 30-minute spatial resolution (STN-30) representing all potential drainage pathways across the global land surface.

Map description and dataset provided by: Water Systems Analysis Group, Complex System Research Center, Institute for the Study of Earth, Oceans and Space, University of New Hampshire, USA

DescriptionGlobal Potential River Network

The global Simulated Topological Network (STN-30) represents rivers as a set of spatial and tabular data layers derived from a 30-minute flow-direction grid. The potential river network represents all drainage flow paths whether they are actively flowing or dry. Dataset includes various drainage system attributes (i.e., basin area, length, distance to river mouth, etc.).

Interpretation

Simulated Topological Networks are used to represent the linkage of continental land mass and river networks defining flow direction, connectivity of river network segments and organization of drainage basins. The global potential STN-30 river network delineates both actual and potential drainage paths based on digital elevation models to define the actual and potential flow of water across the global land surface. The 30-minute STN for the world is suitable for monthly flow simulations, such as used in the GHAAS Water Transport Model (WTM). Other uses of the STN include the derivation of basin-wide or subbasin characteristics such as stream order, mainstem length and catchment area.

Source

The dataset for this map was provided by: Charles J. Vörösmarty, Water Systems Analysis Group, Complex System Research Center, Institute for the Study of Earth, Oceans and Space, University of New Hampshire, USA

Background

The STN-30 global potential river network represents an update of Vörösmarty et al. (2000a, b) using methods developed in Fekete et al. (2001) (http://www.wsag.unh.edu/Stn-30/stn-30.html).

Citation

Please cite this map as: "GWSP Digital Water Atlas (2008). Map 59: Global Potential River Network (V1.0). Available online at http://atlas.gwsp.org."

Contact Information

Charles J. Vörösmarty, Water Systems Analysis Group, Complex System Research Center, Institute for the Study of Earth, Oceans and Space, University of New Hampshire, Durham, NH USA 03824, This e-mail address is being protected from spam bots, you need JavaScript enabled to view it , Phone: +01.603.862.0850, Fax: +01.603.8

 
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