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  • Users: APG817
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  1. APG817

    Reverse Flows not Modeling Accurately

    Hello Psmart, I've been working on a couple residential stormwater detention designs, and some of them feature reverse flow conditions. Traditionally we would have the site drainage in a 6-inch pipe and this would enter into the uphill side of our Detention Storage Pipe. The Detention...
  2. APG817

    Modeling a Series of Drops/Waterfall Effect

    We have an upper pond and a lower pond at elevation connected by a 450' length of creek. Flows from an approximately 30 acre water shed will flow through this creek. The landscape architect would like to have two small basins between the upper and lower ponds, and several 2-4' waterfall drops...
  3. APG817

    Designing Overflow Weir

    Hey everyone, I'm designing a ~27,000 sq-ft. wet pond which holds approx. 650,000 gal. and serves a drainage area of approximately 30 acres. The desired pond water elevation & corresponding weir crest elevation are 465' I'm trying to determine ideal dimensions for my sharp-crested contracted...
  4. APG817

    Proper Interpretation of Results

    Hi again, I believe I'm modeling my design properly, but I'm having trouble interpreting one of the results. I've attached the file for reference. Essentially I have a simple system with a Catchment area feeding into a Catch Basin which flows into a detention pond (36" pipe 25 ft. long). This...
  5. APG817

    Newbie Help - Error 700: Unable to Extend Routing Tables

    Hi guys, new to HydroCAD, but trying to model a relatively simple system and it's giving me a huge headache. We have a Collection Area -> Reach -> Detention System (Storage Pipe w/ Culvert outlet) -> Detention System (Catch Basin w/ Pump) Everything was working fine, until I tried increasing...

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