I am looking for guidance about reliable method of sub-basin length calculation.
I am a student and working on morphometric analysis for prioritization of sub-watersheds of a river basin. I am using White Box Tool Plugin for ArcGIS Pro for watershed delineation and stream network extraction.
I used this formula given by Schumm Lb=1.312*A^0.568 to calculate sub-basin length , length exceeded the actual length of basin. In literature this formula is mostly used in morphometric analysis. I am confused about measurement of length of sub-Basins in Morphometric parameters analysis. I want to know how to relate (how can I check / assess or verify) the length of sub-Basin obtained from this formula?
These are the some screen shorts about length calculation;