Recent content by Gunns

The weir is below grade covered by gravel along the sides of the pump station

but if you but all the grate openings into the fill does it restrict flow more than what would happen in real life?

Is there away to run hydroCAD to adjust for greater runoff volume when comparing to Green-Ampt method of predicting runoff?

When modeling a discharge threw a grate in HydroCAD, does HydroCAD accurately represent discharge flow?

I am wondering how best to account for flow threw gravel to a weir along a pump station?

Can hydroCAD model a river head and tail water.

Can HydroCAD run two reverse flows from a pond so water can move in two diections?

OK, I switched the routing method and I got 15 warnings (3-87, 4-93, 2-95, 2-90, 4-80) so my understanding from these warnings is that my system is so much tail water that the system is backing all the way up my channels.

How would you model a rain garden? Hou would you model a bioswale?

I am modeling a channel has a pond to account for storage in the channel. I have split the channel into 6 sections because there are crossings that connect the channel by culverts between 3 of the section. At the outfall I used a pond to account for storage there. I want to account for...

Ok, great. thanks

No, I am modeling a concrete channel which flows to a culvert which connects the channell to the next section of channel. So I originally did a pond with culvert but couldn't account for the slope of the channel with storage. So then I switched to a reach and pond w/culvert with no storage...

I am modeling a concrete channel with a culvert. The channel has a 1:1 side slope with a max depth of 3.45ft, 0.3% slope and a 5.5ft base. The culvert empties into another concrete channel section to a pond with culvert.

That is true but it does not account for tailwater

How do I model a concrete channel in HydroCAD so I can account for a channel slope and storage.