Abstract
RivGraph: Automatic extraction and analysis of river and delta channel network topology
Highlights
River networks sustain life and landscapes by carrying and distributing water, sediment, and nutrients throughout ecosystems and communities
Flow directions are solved for each link of the network without using auxiliary data, e.g., a digital elevation model (DEM)
RivGraph can return extracted networks as networkx objects for convenient interfacing with the full-featured networkx package (Hagberg et al, 2008)
Summary
River networks sustain life and landscapes by carrying and distributing water, sediment, and nutrients throughout ecosystems and communities. Morphologic properties of each river channel as well as the direction of flow through the channel inform how fluxes travel through the network’s channels. RivGraph is a Python package that automates the extraction and characterization of river channel networks from a user-provided binary image, or mask, of a channel network (Fig. 1). RivGraph will create explicit representations of the channel network by resolving river centerlines as links, and junctions as nodes. Flow directions are solved for each link of the network without using auxiliary data, e.g., a digital elevation model (DEM). RivGraph offers a suite of topologic metrics that were designed for river channel network analysis (Tejedor et al, 2015b). RivGraph: Automatic extraction and analysis of river and delta channel network topology.
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