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Pond percolation in HydroCAD

thread789-24364

Pond percolation in HydroCAD

Pond percolation in HydroCAD

(OP)
How is it accomplished?  I need to show that the retention pond is back to "normal" (dry in this case) within 72 hrs.  I know the permeability of the soil.

I have been using PONDS, but would like to use HydroCAD instead, due to the ease of use....

Mark

RE: Pond percolation in HydroCAD

This is handled as an "Exfiltration" outlet device on a pond.  For details, click the Help button on the exfiltration screen.

RE: Pond percolation in HydroCAD

(OP)
I have tried using the exfiltration.  The result I need still does not appear, what exfiltration does is add another outfall as well as 2 more lines to the hydrograph.  I do not need a "speed" of percolation line on the hydrograph, I need output that indicates when the pond is restored to pre-storm condition (a dry pond would be dry and a wet pond would be at the pre-storm water elevation).  The water management districts in this part of the country require this output.  

I like the ease of use of the HydroCAD but I need this output to pacify the stormwater folks.

Mark R.
markrichter(AT)engineer(DOT)com

RE: Pond percolation in HydroCAD

Just right-click the pond hydrograph and select the "Elevation" curve.  The hydrograph table also shows the elevation.

RE: Pond percolation in HydroCAD

Got an email from psmart with the directions on how to turn the feature on.

Thanks again!

Mark R.
markrichter(at)engineer(dot)com

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