HexWatershed

HexWatershed: a mesh independent flow direction model for hydrological models.

This Python package provides a Python interface to the underlying HexWatershed model.

HexWatershed has been compiled and tested on various 64-bit Linux and Mac based platforms.

Installation

Ensure you have a c++ compiler and the cmake utility installed.

Build the HexWatershed C++ backend and place the binary under the bin path.

Install the python package using conda: conda install -c conda-forge hexwatershed

For detailed installation instruction, please refer to the documentation.

Usage

Please use this tutorial to run the examples.

Acknowledgement

This work was supported by the Earth System Model Development program areas of the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research as part of the multi-program, collaborative Integrated Coastal Modeling (ICoM) project.

License

Copyright © 2022, Battelle Memorial Institute

1. Battelle Memorial Institute (hereinafter Battelle) hereby grants permission to any person or entity lawfully obtaining a copy of this software and associated documentation files (hereinafter “the Software”) to redistribute and use the Software in source and binary forms, with or without modification. Such person or entity may use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and may permit others to do so, subject to the following conditions:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimers.

• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

• Other than as used herein, neither the name Battelle Memorial Institute or Battelle may be used in any form whatsoever without the express written consent of Battelle.

1. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BATTELLE OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

References

There are a number of publications that describe the algorithms used in HexWatershed in detail. If you make use of HexWatershed in your work, please consider including a reference to the following:

Scientific Publications

• Liao, Chang, Zhou, T., Xu, D., Tan, Z., Bisht, G., Cooper, M. G., et al. (2023). Topological relationship-based flow direction modeling: Stream burning and depression filling. Journal of Advances in Modeling Earth Systems, 15, e2022MS003487. https://doi.org/10.1029/2022MS003487

• Liao, Chang, Zhou, T., Xu, D., Cooper, M. G., Engwirda, D., Li, H.-Y., Leung, L. R. (2023). Topological relationship-based flow direction modeling: Mesh-independent river networks representation. Journal of Advances in Modeling Earth Systems, 15, e2022MS003089. https://doi.org/10.1029/2022MS003089

• Liao, Chang, Tian Zhou, Donghui Xu, Richard Barnes, Gautam Bisht, Hong-Yi Li, Zeli Tan, et al. (02/2022AD) 2022. “Advances In Hexagon Mesh-Based Flow Direction Modeling”. Advances In Water Resources 160. Elsevier BV: 104099. https://doi.org/10.1016/j.advwatres.2021.104099.

• Liao, C., Tesfa, T., Duan, Z., & Leung, L. R. (2020). Watershed delineation on a hexagonal mesh grid. Environmental Modelling & Software, 128, 104702. https://doi.org/10.1016/j.envsoft.2020.104702

Software

• Liao, Chang, Cooper, M. G. PyFlowline a mesh independent river network generator for hydrologic models. Journal of Open Source Software. https://doi.org/10.21105/joss.05446

• Liao. C. (2022) Pyflowline: a mesh independent river network generator for hydrologic models. Zenodo. https://doi.org/10.5281/zenodo.6407299

• Liao. C. (2022). HexWatershed: a mesh independent flow direction model for hydrologic models (0.1.1). Zenodo. https://doi.org/10.5281/zenodo.6425881

For a full list of references including applications of HexWatershed in other projects, please refer to the documentation.