I'm using 2011 and it's a complex job. I used it before on simpler jobs with no hiccups. The help tells me stuff can be done but not really how best to do it. Alot of trial and error and who has time for that?
I'm trying to determine how high the water gets above the grates of inlets in the midst of multiple intersecting roadways. So they are in a basin of sorts and wanting to see how close to the edge of road it gets. Multiple inlets per depression.
I would try modeling the roadway and right or way surface as a detention basin. I usually se the intakes up as a junction and and orifice as an outlet fromt he basin. You can set multiple orifice elevations if your intakes had different rim elevations. If you go that route make sure that your junctions have the same rim elevations as the top of your surface for the basin. Otherwise the HGL cals could be off.
For multiple inlets in a ponding area that merges together (one big pool, multiple inlets) I'd create a single storage node, then create multiple weirs, orifices, or other conveyance links to manage overflows, etc. Once pools join together, as long as they are equitably separated as they stage down, this is an easy way to go.
A storage node would represent the ponding area in the road. I typically get the storage data from a surface in Civil3D. I usually create two storage nodes per set of intakes at a sag. One for the right side and one for the left, there would be an imaginary line down the center of the road seperating the two storage areas. I then connect the two storage nodes with a weir, elevation equal to the elevation at center line. You then have the orifices going into the junctions for your intakes and either weir or channel links as the overflow from the storage nodes to you next basin.
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