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==Determine the required surface area of the practice==
==Determine the required surface area of the practice==
* Step 10: Calculate the surface area of the practice (A<sub>p</sub>) needed to capture the volume of runoff produced from the catchment during the design storm event<br>
* Step 10: Calculate the surface area of the practice (A<sub>p</sub>) needed to capture the volume of runoff produced from the catchment from the design storm event<br>
For practices where flow is delivered to a surface ponding area:
For practices where flow is delivered to a surface ponding area:
<math>A_{p}=i\times D\times A_{i}/[d_{p}' + (f_{f, min} \times D)]</math>
<math>A_{p}=i\times D\times A_{i}/[d_{p}' + (f_{f, min} \times D)]</math>
<math>R=A_{i}/A_{p}</math><br>
<math>R=A_{i}/A_{p}</math><br>
Adjust either A<sub>i</sub> or A<sub>p</sub> to keep R between 5 and 20.
Adjust either A<sub>i</sub> or A<sub>p</sub> to keep R between 5 and 20.
==Determine the required surface area of the storage reservoir==
* Step 13: Calculate the surface area of the storage reservoir, A<sub>r</sub> (m<sup>2</sup>) needed to capture the infiltration volume target for the design storm event <br>
For practices with no underdrain:
<math>
==Calculate peak flow rates==
==Calculate peak flow rates==