🌍 Click somewhere on the map to get started!
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Legend for points in high-precision mode :
o Requested watershed outlet
o Snapped to river centerline
About / Help for more information about the app.
© 2022. Contact the author with questions or comments.
Open source code at GitHub.
Watershed Delineation
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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.
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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.