Changes

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The invert of the overflow should be placed at the maximum water surface elevation of the bioretention area. i.e. the maximum ponding depth. A good starting point is around 300 mm over the surface of the practice. However, consideration should be given to public safety and time for the ponded water to drain. See [[Bioretetion: Sizing#Additional step for system without underdrain]]

The invert of the overflow should be placed at the maximum water surface elevation of the bioretention area. i.e. the maximum ponding depth. A good starting point is around 300 mm over the surface of the practice. However, consideration should be given to public safety and time for the ponded water to drain. See [[Bioretention: Sizing#Additional step for system without underdrain]]

==Options==

==Options==