There is no excuse not to use standard engineering methods to calculate the water flow in even the simplest culvert situation when you can do it within HY-8 in 2.2 minutes.
Watch video Culvert pipe flow headwater calculation in 2.2 minutes with HY-8 online without registration, duration hours minute second in high quality. This video was added by user Tom Haws 01 April 2021, don't forget to share it with your friends and acquaintances, it has been viewed on our site 4,751 once and liked it 21 people.