0.04 at the large river scale and scale up to 0.1 at tiny intermittent tributaries. It would be neat to compile n values for a variety of different stream types- we work in the redwoods which are way different than urban/agrarian environments.
Thanks for the video and discussion! Some of my thoughts... @25:05 team 0.035! @41:55 if you georeference a drawing (as a .tif) you can bring the whole thing into RasMapper instead of individual pieces. @51:30 Question: would an ineffective area be more appropriate instead of a blocked obstruction? What would the pro/cons be? @57:30 Question: what are the velocity results for a 1D model showing in RasMapper? Would they show the same distribution or just do the left, channel, right distribution? @1:03:30 good discussion on 1D vs. 2D. One thing I always like to point out is that the while the hydraulics might be able to be calculated to 0.1-ft accuracy, the boundary conditions (hydrology, breach parameters, etc.) for some simulations are usually much less certain. Understanding those issues can drive the choice of the detail necessary for the hydraulic model.
0.04 at the large river scale and scale up to 0.1 at tiny intermittent tributaries. It would be neat to compile n values for a variety of different stream types- we work in the redwoods which are way different than urban/agrarian environments.
Thanks for the video and discussion! Some of my thoughts...
@25:05 team 0.035!
@41:55 if you georeference a drawing (as a .tif) you can bring the whole thing into RasMapper instead of individual pieces.
@51:30 Question: would an ineffective area be more appropriate instead of a blocked obstruction? What would the pro/cons be?
@57:30 Question: what are the velocity results for a 1D model showing in RasMapper? Would they show the same distribution or just do the left, channel, right distribution?
@1:03:30 good discussion on 1D vs. 2D. One thing I always like to point out is that the while the hydraulics might be able to be calculated to 0.1-ft accuracy, the boundary conditions (hydrology, breach parameters, etc.) for some simulations are usually much less certain. Understanding those issues can drive the choice of the detail necessary for the hydraulic model.
Ryan, it’s good to see we both creep around on the same corners of the internet!
I was always more of a 0.04 guy myself :)
I usually start at 0.04