Infiltration BasinDesign Notes Cont’d

• Maximum basin depth is determined by:

  dmax = f Tp
  
  Where:
  dmax = maximum depth
  f = final infiltration rate (in/hr)
  Tp = maximum allowable ponding time (hr)

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An infiltration basin maximum depth is based on the same principles as an infiltration trench. However, because the basin uses an open area or shallow depression for storage, the maximum allowable depth is a function of maximum allowable ponding time instead of storage time.