Formulas for Irrigation Audit

AC = Average Catch

= (1c + 2c + 3c + 4c + 5c + 6c + 7c + 8c) ^∙/. 8

ALC = Average Low Catch

= (whichever two collectors are lowest ie 1,2) = (1c + 2c) ^∙/. 2

AD = Average Deviation

= ( |1c – AC| + |2c – AC| + |3c – AC| + |4c – AC| + |5c – AC| + è

è |6c – AC| + |7c – AC| + |8c – AC|) ^∙/. 8

DU = Distribution Uniformity

= ALC ^∙/. AC

CU = Coefficient of Uniformity

= (1 – AD) ^∙/. AC

SC = Scheduling Coefficient

= AC ^∙/. ALC