Hydrology in ArcGIS Pro, Lab Exercise 7: Generating a Stream Network using Strahler Stream Orders

Here we will use several ArcGIS Pro raster tools, including the Set Null tool, the Stream Order tool and the Stream to Feature tool to generate a network of stream features on the landscape based on the Flow Accumulation raster we created in Lab Exercise 6. These stream features will all be classified into stream orders using the Strahler method, in which the smallest tributaries have a stream order of 1. When two streams with the same Strahler stream order come together, they produce a new stream with an incrementally higher stream order value (meaning that if two Level 1 streams come together, they produce a Level 2 stream; two Level 2's produce a Level 3 stream).
Basic Hydrologic Analysis in ArcGIS Pro Lecture: • Basic Hydrologic Analy...
Lab Exercises:
Lab 1: Calculating Areas from Raster Datasets; • Hydrology in ArcGIS Pr...
Lab 2: Problems when creating Watersheds without filling the DEM; • Hydrology in ArcGIS Pr...
Lab 3: Filling Sinks in a DEM; • Hydrology in ArcGIS Pr...
Lab 4: Calculating an Accurate Flow Direction Raster; • Hydrology in ArcGIS Pr...
Lab 5: Generating an Accurate Watershed; • Hydrology in ArcGIS Pr...
Lab 6: Creating a Flow Accumulation Raster; • Hydrology in ArcGIS Pr...
Lab 7: Generating a Stream Network using Strahler Stream Orders; • Hydrology in ArcGIS Pr...
Lab 8: Aspect Statistics within Watershed; • Hydrology in ArcGIS Pr...
Lab 9: Slope Statistics within Watershed; • Hydrology in ArcGIS Pr...
Lab 10: The Topographic Wetness Index (TWI); • Hydrology in ArcGIS Pr...
Lab 11: Finding the Shortest Path Through the Stream Network; • Hydrology in ArcGIS Pr...
Extra Materials:
Word Document with walk-throughs of lab exercises: docs.google.com/document/d/13...
Data for Lab Exercises: drive.google.com/file/d/1i07m...
Manuscripts discussing TWI: drive.google.com/file/d/1W4Ty...

[@allanm1007]

excellent resource, thank you and really really some of the best gis info ive found anywhere, superb, thanks you again ))

[@jennessenterprisesadventur5081]

Thanks so much Allan! I much appreciate the kind words.

[@jspain7690]

Can I be one of your student? Holy smokes this format is so much better than what I am currently learning from! Thank you so much... Hours wasted watching other videos.

[@jennessenterprisesadventur5081]

Thanks so much for the kind words! This was a good message to start the day with. I'm glad the videos are working for you and thank you for letting me know.

[@GinanKurdi]

What if you symbolized the Stream_to_feature with an arrow? Will the accurately tell the direction the stream in flowing?

[@GinanKurdi]

My goal is to show the direction the effluent from WWTP is flowing too

[@jennessenterprisesadventur5081]

I am so sorry to take so long to respond to you on this question! It slipped past me somehow, but I do apologize for my rudeness.
If it is not too late to help, then yes, the stream polylines do accurately point downstream. The "StreamToFeature" tool requires the flow direction raster to run, and I suspect it uses this flow direction raster to correctly orient the stream polylines.
You can symbolize the streams with arrows by adding an arrowhead-shaped marker symbol to the flowlines.

[@J_Durham]

Have you had issues with running this Stream Order tool? I have tried to run this tool several times, and each time it gets stuck on 8% and does not progress. I have let it try to process for several hours, with no progress.

[@jennessenterprisesadventur5081]

Hello J, My apologies for taking so long to respond! I am sorry to say I have not had this experience, so I am not sure what might be the problem! If you'd like me to take a look, please email me at [e-mail] and we can try to figure it out.

[@vaishalikandpal2392]

Have you had any luck with this? My situation seem to be the same as yours, where during the stream order processing, it gets stuck at 8%.

[@cphone8093]

A strange pause-less, monologue - with no stress, review or clarity which distinguishes fact, instruction and comment. Context setting in impenetrable, but things improve after 4 minutes where he gets specific about steps. No doubt he is an expert but he is not a great teacher, at least not for relative beginners.

[@jennessenterprisesadventur5081]

Sorry it didn't work for you! Fortunately there are lots of people out there trying to explain this stuff, so hopefully you'll find someone else who suits your learning syle better.