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Welcome to the Tiger-HLM Routing wiki!

The Tiger Hillslope Link Model (HLM) is a complete rewrite of the original HLM idea developed by the Iowa Flood Center. This specific code is the routing equation only and is complemented by the Tiger-HLM GPU code that produce runoff at the hillslope level. This code is written in C++ and is parallelized using OpenMP for direct scalability. The preprocessing of a river network is done a priori by the user and then each level of the network (level 0: leaves to level n: outlet) has the number of stream links solved in parallel. The routing module has also been improved by ingesting directly netCDF files of hillslope-link runoff (see further documentation) and allowing users to enter directly with upstream discharge boundary conditions. Finally, the program will directly output streamflow hydrographs in netCDF files.

The code is open to everyone, and we’re continually adding new features that will be released after they’ve been thoroughly tested.

Each release will eventually be accompanied with a DOI from zenodo for transparency and once the model software and validation papers are accepted, they will also be linked to that as well.

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Documentation is provided using these wiki pages.