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Read and write Watershed Data Management (WDM) files

Project description Latest release BSD-3 clause license wdmtoolbox downloads


The wdmtoolbox is a Python script and library to read/write/manage Watershed Data Management (WDM) files used for time-series in hydrology and hydrological simulation. WDM files are used in the Hydrological Simulation Program - FORTRAN (HSPF) and the Better Assessment of Science Integrating point and Non-point Sources (BASINS). HSPF is a part of the BASINS system.

BASINS, HSPF, and various utilities are available at

For HSPF I also have developed:

Installation for the Impatient

pip install wdmtoolbox

For Windows should use the conda environment and install as many of the required libraries with conda install … before using pip..

Compile From Source

To compile from source you need a “C” compiler (gcc on Linux, Visual Studio 2019 for Windows), a FORTRAN compiler (gfortran on Linux, MSYS2/MINGW gfortran on Windows), Python 3.7, 3.8, or 3.9 with “numpy” installed to be able to access f2py.

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