Pond percolation in HydroCAD 1

Jun 1, 2002

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

psmart · Jun 2, 2002

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

Jun 8, 2002

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

psmart · Jun 8, 2002

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

markrichter · Jun 8, 2002

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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Pond percolation in HydroCAD 1

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markrichter

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