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→Select a surface ponding depth to begin sizing with
* Step 3: Select a design surface ponding depth, d<sub>p</sub>' (m) to begin sizing with:<br>
* Step 3: Select a design surface ponding depth, d<sub>p</sub>' (m) to begin sizing with:<br>
For practices with soft (i.e. landscaped) edges and bowl-shaped ponding areas calculate the mean surface ponding depth,
For practices with soft (i.e. landscaped) edges and bowl-shaped ponding areas calculate the mean surface ponding depth,
<math>d_{p}'=d_{p, max}\times 1/2</math>
<math>d_{p}'=d_{p, max}\times 1/2</math><br>
For practices with hard edges and vertical-walled ponding areas (e.g., stormwater planter, soil cell) use the maximum ponding depth,
For practices with hard edges and vertical-walled ponding areas (e.g., stormwater planter, soil cell) use the maximum ponding depth,
<math>d_{p}'=d_{p, max}</math>
<math>d_{p}'=d_{p, max}</math>