🌍 Global Watershed Delineator
Click anywhere on the map to delineate the upstream watershed
⚙️ Options
Delineation Options
Settings apply to your next click on the map.
High-resolution outlet split
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Return outlet points
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Return rivers
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Stream orders
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Fill holes
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Max hole area (km²)
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Clean boundary
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Simplify output
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Simplify tol. (km)
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Smooth output
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Snap outlet to river
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Search dist. (km)
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Stream threshold (km²)
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Reset defaults
Close
Ready - click the map to delineate a watershed
Watershed
Rivers
Outlet, requested
Outlet, snapped
Watershed Info
Outlet Lat:
—
Outlet Lng:
—
Watershed area:
—
km²
River reaches returned:
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⬇ Watershed
⬇ Rivers