Global Watersheds

🌍 Click somewhere on the map to get started!

📌 Custom location:

🌠 Zoom to watershed or flowpath after it's loaded

⌨️ Keyboard shortcuts

📥 Downloads:
Make downloadable results

📈 Precision:
Lower precision (faster)
Higher precision (slower)

✏️ For watersheds, display:
Rivers, streams
Watershed boundary
Watershed outlet

📚 Data Source:
MERIT-Hydro (2021)
HydroSHEDS (2013)

🗺️ Location:
🖱️ Pointer (lat, lon): ,
🔍 Zoom level:

🔧 Hide Map Controls

Download:	Shapefile	GeoJSON	KML
Watershed Boundary:	shp	json	kml
Rivers:	shp	json	kml
Flow path:	shp	json	kml

⚠️ Error Message

✔️ OK Message

Legend for points in high-precision mode :
o Requested watershed outlet
o Snapped to river centerline

Paste this as html into your website or blog to display an interactive map of your watershed. You can adjust the size of the map by changing the width and height parameters.

Copied to clipboard

Please wait a moment while we create a custom page for your watershed.

D or F: Switch to Downstream - Trace Flow Path. Equivalent to changing your selection on on the drop-down menu at the top left of the page.

U or W: Switch to Upstream - Delineate Watershed. Equivalent to changing your selection on on the drop-down menu at the top left of the page.

Enter: Start the watershed delineation or flowpath tracing task. Equivalent to clicking the “Delineate” or “Trace” button on the map popup.

Escape: Cancel a delineation or flowpath tracing job that is running. Equivalent to clicking the “Cancel” button on the map popup.

Delete: Delete the watershed or flowpath on the map. Equivalent to clicking the red “Delete” button at left.