Line 5:
Line 5:
<math>Y_{0.05} = A \times C_{vol, A}\times R_{a} \times e \times 0.05</math>
<math>Y_{0.05} = A \times C_{vol, A}\times R_{a} \times e \times 0.05</math>
where:
where:
Y<sub>0.05</sub> = Five percent of the average annual yield (L)
{{plainlist|
A = The catchment area (m<sup>2</sup>)
*Y<sub>0.05</sub> = Five percent of the average annual yield (L)
C<sub>vol, A</sub> = The annual runoff coefficient for the catchment
*A = The catchment area (m<sup>2</sup>)
R<sub>a</sub> = The average annual rainfall depth (mm)
*C<sub>vol, A</sub> = The annual runoff coefficient for the catchment
e = The efficiency of the pre-storage filter
*R<sub>a</sub> = The average annual rainfall depth (mm)
*e = The efficiency of the pre-storage filter}}