Pond Draining from X to Y Elevation
Pond Draining from X to Y Elevation
(OP)
Greetings,
I have a project in which I would like to model a levee protected basin(in this case overtopped by surge) with culverts with one-directional valves to avoid backflow. I have setup the pond stage storages and outflow. I have also placed a link downstream of the pond with a table with tailwater information.
At this point, I simply want to set a starting water elevation at the pond (say 3' @ time=0) and see how long the culvert would take to drain the basin to El. 0' based on the pond & link differential head. Can I do this with HydroCAD?
Thanks in advance!
I have a project in which I would like to model a levee protected basin(in this case overtopped by surge) with culverts with one-directional valves to avoid backflow. I have setup the pond stage storages and outflow. I have also placed a link downstream of the pond with a table with tailwater information.
At this point, I simply want to set a starting water elevation at the pond (say 3' @ time=0) and see how long the culvert would take to drain the basin to El. 0' based on the pond & link differential head. Can I do this with HydroCAD?
Thanks in advance!





RE: Pond Draining from X to Y Elevation
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Pond Draining from X to Y Elevation
RE: Pond Draining from X to Y Elevation
Is there a way that to set a pump to begin at a certain time? I need to drain a basin with gravity flow first (as explained above) and once the basin reaches a certain water level I want to start running the pumps. I know I can set a pump on elevation which works however since the pond elevation is started a the flood elevation (higher than the pump on elevation), when I run the pond I am getting both culvert flow and pump running at t=0.
Not sure if there's a way around this. Any help Is greatly appreciated!
Thanks!
RE: Pond Draining from X to Y Elevation
To model your situation you could (a) run two models, one before and one after the desired start time, or (b) you might be able to put a dam breach outlet in series with the pump, preventing any pump discharge until the specified time.
Peter Smart
HydroCAD Software
www.hydrocad.net