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Thanks for the reply. Since the entire lot has to be filled I cannot daylight the depression. The site is extremly flat and I have to add the 2' of fill so that the lot is higher and drains to a proposed detention pond. If I daylight the depression it would be lower than the pond's berm and...

I am working on a rural subdivision in which each lot will have it's own mound system. During construction, we typically stake and rope off the proposed septic fields so that they are left undisturbed during construction. The issue I am running into is that the one lot has to have 2' of fill...

Wondering if anyone has worked with Pervious PAVERS before? I've worked with Pervious Pavement once before but recently the idea of using pervious PAVERS came up in a project I'm working on. The client was thinking of using pervious PAVERS in place of underground storage and or pervious...

Wisconsin DNR standards states that in order to meet their water quality requirement a detention pond must take over 24 hours to release the 1-yr 24-hr storm event. Does anyone know if HydroCAD models this and where to find the length of time for a storm event to drain from the pond? Any help...

I'm designing a private parking lot for both cars and school buses. Trying to decide whether to use PVC or RCP. I have between 1.5' and 3' bewteen my top of pipe to the asphalt. PVC is less expensive and would save my client money but I want to make sure it will hold up to the heavier load...

I am trying to model a pond using WinSLAMM. When I enter my data for a sharp-crested weir, a "Stage-Invert Warning" box pops up with the message, "The elevation at the top of the weir is not equal to the highest pond elevation, which is x.xx." However, when I look back at the pond staging...