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Line 141:
Line 141:
→Determine the required surface area of the storage reservoir
For practices with no underdrain:
For practices with no underdrain:
<math>A_{r}=V_{i}/[d_{i}+(f'\times D)]</math>
<math>A_{r}=V_{i}/[d_{i}+(f'\times D)]</math>
{{Plainlist|1=Where:
*V<sub>i</sub> = Infiltration volume target for the design storm event (m<sup>3</sup>)
*d<sub>i</sub> = Infiltration water storage depth of the practice (m), see equations above to calculate for with and without underdrain designs.
*f' = Design infiltration rate of the underlying native soil (m/h)
*D= Duration of design storm (h)
==Calculate peak flow rates==
==Calculate peak flow rates==