# perrygeo/pydem

> Python library for Global Hydrology Analysis. Used to calculate upstream contributing area, aspect, slope, and topographic wetness index. 

- **Canonical URL**: https://githubrepo.cloud/repo/perrygeo/pydem
- **GitHub Repository**: https://github.com/perrygeo/pydem
- **Maintainer / Creator**: https://github.com/perrygeo
- **Discovered On**: Oct 21, 2026

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