Hi! I am Matthew Heberger, hydrologist and programmer. I created the Global Watersheds web app, which I think is particularly well-suited for creating watershed maps for Wikipedia. You are free to reuse or remix any of the maps I have uploaded. Attribution is always appreciated.

Starting in 2023, I have created watershed maps for many Wikipedia articles about rivers. A list of these is here:

Maps of drainage basins from Global Watersheds (Wikimedia)

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