Hydrocad Exfiltration Invert Elevation

[meatymatt]

Using hydrocad version 8

For a pond with a pervious bottom I have always clicked "allow exfiltration at all elevations"

By default, hydrocad 8 sets the invert elevation to 0

It seems like newer versions of hydrocad have a different screen and when selecting "allow exfiltration at all elevations" it assigns the invert at the bottom of the pond vs "0"?

On a recent stormwater report, the reviewer has requested that I set the invert for exfiltration at the bottom of the pond

When I do this, I get 0 exfiltration since I am only allowing on horizontal plane and hydrocad now assumes the bottom is impervious

Your thoughts?

Thank you

 

[psmart]

An exfiltration invert of zero with HydroCAD 8 is equivalent to "Allow exfiltration at all elevations" on later versions. Later versions will then report a zero invert. They do NOT set the pond bottom elevation.