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  • Users: MHMcLeod
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  1. MHMcLeod

    Detention Ponds w/ Leaching Basins

    I am designing a detention pond that allows for infiltration. As an overflow outlet, I'm using leaching catch basins w/ inlets set above the bottom of the pond (2 basins per pond). The catch basins are surrounded by stone and linked together w/ a perforated pipe surrounded by stone. I've...
  2. MHMcLeod

    Curve #- Residential Lot Default

    When modeling a subdivision of known lot size (say 1-acre lots/ 20% impervious/ Type C soils) does this CN value of 79 include the paved road frontage associated w/ each lot, or should the roadway be modeled as a separate CN line item in the subcatchment node?
  3. MHMcLeod

    Detention Ponds w/ 2ndary Outlet

    I am modeling a detention pond w/ a catch basin inlet set one foot above the floor of the pond, leading to a culvert whose invert is below the pond floor. When I add an emergency spillway as a secondary outlet, I get 0 cfs flowing through the inlet & culvert. If I remove the secondary spillway...

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