Table 5: Summary of follow-up time and critical gap computations when x = 1.0.

Site Model Equations Dry
Flowrate pcu/h
Rainfall
Flowrate pcu/h
Follow-up Time tf (s)±10% Gap Time tc (s) ±10%
Qe Qc Qe Qc Dry
tf (s)
Rainfall
tf (s)
Dry
tc (s)
Rainfall
tc (s)
01
k=0.95
QE = 2280-1.17Qc-146RL 1083 926 1013 867 3,32 3,55 3.44 3.55
QE = 2211-1.09Qc-302RM 1050 964 906 817 3,43 3,97 3.28 3.81
QE = 2159-1.04Qc-345RH 1026 986 861 829 3,51 4,18 3.20 3.74
02
k=0.98
QE = 1967-1.23Qc-71RL 964 784 929 756 3,73 3,88 4.14 4.16
QE = 1908-1.17Qc-191RM 935 799 841 719 3,85 4,28 4.06 4.41
QE = 1805-1.06Qc-264RH 885 835 755 721 4,07 4,77 3.86 4.39
03
k=0.93
QE = 1985-0.99Qc-110RL 923 933 872 881 3,90 4,13 3.41 3.49
QE = 2038-1.04Qc-270RM 948 957 822 831 3,80 4,38 3.31 3.73
QE = 1900-0.92Qc-379RH 884 961 707 761 4,07 5,09 3.30 4.13
04
k=0.97
QE = 1902-1.19Qc-61RL 922 832 892 773 3,90 4,04 3.88 4.06
QE = 1716-0.88Qc-149RM 832 980 760 894 4,33 4,74 3.22 3.43
QE = 1556-0.61Qc-183RH 755 1279 665 1130 4,77 5,41 2.36 2.59

Note: RL, RM, RH - light, moderate and heavy rainfall respectively; k-correction factor for entry radius and angles; tf denotes follow-up time; tc denotes critical gap, and x denotes the degree of saturation; Qe denotes entry capacity; Qc denotes circulating capacity