Appropriate Threshold Value for Stream Network Delineation

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3 weeks ago
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New Contributor II

Hi,

I am creating stream orders for morphometric analysis.

At what threshold will we write to the Con tool when creating a stream? (Example "Value > 100").

As known this affects all accounts as it affects the number of Strahler stream orders.

How can I determine the threshold that I am going to write in the "Con tool" and that is suitable for my basin?

DEM data has been attached.

Best wishes, Ahmet.

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MVP Regular Contributor

From the help topic, there is a reference link

Stream Order (Spatial Analyst)—ArcGIS Pro | Documentation 

Tarboton D. G., R. L. Bras, I. Rodriguez–Iturbe. 1991. On the Extraction of Channel Networks from Digital Elevation Data. Hydrological Processes. 5: 81–100.

If you are associated with an academic institution, you can access the original here

https://onlinelibrary.wiley.com/doi/epdf/10.1002/hyp.3360050107 

otherwise, it will be some $$ or you will have to Dr Google to see if anyone has covered the salient points in other links

sort of retired...
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New Contributor II

Thank you.

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New Contributor III
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