topic Re: Appropriate Threshold Value for Stream Network Delineation in Water Resources Questions

Appropriate Threshold Value for Stream Network Delineation

AHMETÖZTÜRK — Sun, 01 Nov 2020 23:44:35 GMT

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.

Re: Appropriate Threshold Value for Stream Network Delineation

DanPatterson — Mon, 02 Nov 2020 03:17:26 GMT

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

Re: Appropriate Threshold Value for Stream Network Delineation

AHMETÖZTÜRK — Mon, 02 Nov 2020 08:39:23 GMT

Thank you.

Re: Appropriate Threshold Value for Stream Network Delineation

TungNg — Sun, 22 Nov 2020 00:42:08 GMT

Check out TauDEM with the Peuker Douglas Stream Definition method

https://hydrology.usu.edu/taudem/taudem5/help53/PeukerDouglasStreamDefinition.html

https://hydrology.usu.edu/taudem/taudem5/documentation.html