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 Analysis in ArcGIS Pro  

Lab Exercises:
Lab 1: Calculating Areas from Raster Datasets;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 2: Problems when creating Watersheds without filling the DEM;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 3: Filling Sinks in a DEM;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 4: Calculating an Accurate Flow Direction Raster;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 5: Generating an Accurate Watershed;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 6: Creating a Flow Accumulation Raster;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 7: Generating a Stream Network using Strahler Stream Orders;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 8: Aspect Statistics within Watershed;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 9: Slope Statistics within Watershed;    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 10: The Topographic Wetness Index (TWI);    • Hydrology in ArcGIS Pro, Lab Exercise...  
Lab 11: Finding the Shortest Path Through the Stream Network;    • Hydrology in ArcGIS Pro, Lab Exercise...  

Extra Materials:
Word Document with walkthroughs of lab exercises: https://docs.google.com/document/d/13...

Data for Lab Exercises: https://drive.google.com/file/d/1i07m...

Manuscripts discussing TWI: https://drive.google.com/file/d/1W4Ty...