Kerby-Hathaway
This equation is best suited for small sheet flow dominated area of less than 10 acres. It is recommended that small area should have an overland slope less than 1%, and average Manning's n of less than 0.08.
This equation is best suited for small sheet flow dominated area of less than 10 acres. It is recommended that small area should have an overland slope less than 1%, and average Manning's n of less than 0.08.