I'm having to model a roadside ditch to satisfy a reviewer for a proposed culvert. I've been told by the reviewer that "The channel bank stations should be at the Ordinary High Water Mark, not at the top of bank" (which is how I've always done it). In essence, moving the Bank Stations from the...
So, I'm going through RAS and doing the Method 4 & 5 Encroachment method to define my floodway. Everything is going fine for the first 3500 feet, until I get to the first cross section after it changes from concrete (upstream) to an earthen channel (also the first XSec after box culvert)...
I have a channel running through a residential subdivision. Just wondering how you model houses in the overbanks.
I've seen two separate ways. One is using a little higher n value of 0.07 in the overbanks and using ineffective flow areas (for the storage, but essentially no conveyance). The...
