Pond Modeling - Outlet Through Vertical Pipe
Pond Modeling - Outlet Through Vertical Pipe
(OP)
I have a wet pond with a permanent pool whose flow will pass through a riser structure and exit via an outlet pipe. The outlet pipe will be connected to a level spreader (see image).
For the purposes of a supplemental calculation, I was assuming that the flow from the pond outlet pipe could only pass through the standpipe/riser portion of the level spreader - not through the perforated pipe. The standpipe/riser (of the level spreader) was assumed to be about 2' high.
A reviewing agency commented and we were asked to "..please prove no backwater at wet pond riser in case of bigger storms.."
Looking at my attached routing diagram, do I have this scenario modeled correctly?

For the purposes of a supplemental calculation, I was assuming that the flow from the pond outlet pipe could only pass through the standpipe/riser portion of the level spreader - not through the perforated pipe. The standpipe/riser (of the level spreader) was assumed to be about 2' high.
A reviewing agency commented and we were asked to "..please prove no backwater at wet pond riser in case of bigger storms.."
Looking at my attached routing diagram, do I have this scenario modeled correctly?


RE: Pond Modeling - Outlet Through Vertical Pipe
And what are you modeling with device #1 (which appears to be a horizontal orifice)? Is this the level spreader? How is it constructed?
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Pond Modeling - Outlet Through Vertical Pipe
The perforated pipe portion of the level spreader was not modeled within HydroCAD. For this calculation I was assuming that the perforated pipes were clogged and that water could only flow through the standpipe.
Device #1 was intended to be the top of the standpipe portion of the level spreader. The pond outlet pipe will connect to the standpipe of the level spreader.
I guess I'm asking how to model flow that is going upwards through the standpipe...should I be using a different outlet device?
RE: Pond Modeling - Outlet Through Vertical Pipe
Peter Smart
HydroCAD Software
www.hydrocad.net