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→Determine the active one dimensional (1D) water storage depth of the practice
<math>d_{p}'=d_{p, max}</math>
<math>d_{p}'=d_{p, max}</math>
==Determine the active one dimensional (1D) water storage depth of the practice==
==Determine the active water storage depth of the practice==
* Step 4: Identify the active water storage components of the practice<br>
* Step 4: Identify the active water storage components of the practice<br>
For practices without an underdrain, the active storage components include the surface ponding, mulch and filter media depths (i.e. total depth of the practice, d<sub>T</sub>:
For practices without an underdrain, the active storage components include the surface ponding, mulch and filter media depths (i.e. total depth of the practice, d<sub>T</sub>):
<math>d_{a}=d_{T}</math>
<math>d_{a}=d_{p}'+ d_{m}\times n_{m} + d_{f}\times n_{f}</math>
{{Plainlist|1=Where:
{{Plainlist|1=Where:
*d<sub>T</sub> = Total depth of the practice, including surface ponding}}<br>
*d<sub>T</sub> = Total depth of the practice, including surface ponding}}<br>