USC FloodStudyUpdate Report - Flipbook - Page 256
Table 4: Adopted Rainfall Losses
Event
50% AEP
20% AEP
10% AEP
5% AEP
2% AEP
1% AEP
0.5% AEP
0.2% AEP
PMP
Duration (mins)
Initial Loss (mm)
Continuing Loss
(mm/hr)
30
25.4
0.9
540
24.4
0.9
1440
29.9
0.9
30
12.7
0.9
540
16.5
0.9
1440
22.8
0.9
60
12.3
0.9
360
12.3
0.9
1080
19.4
0.9
60
12.9
0.9
360
10.5
0.9
1080
18.1
0.9
30
12.4
0.9
360
9.4
0.9
720
13.8
0.9
30
10.6
0.9
360
5.6
0.9
720
6.7
0.9
30
10.6
0.9
360
5.6
0.9
720
6.7
0.9
30
10.6
0.9
360
5.6
0.9
720
6.7
0.9
60
1
0
120
1
0
240
1
0
ARR Datahub data was adopted at a single location for the entire catchment. This information is used to
select the temporal patterns and rainfall losses. Probability neutral burst initial losses (recommended in
NSW) and factored continuing losses (factored by 0.4, as recommended for NSW in Reference 3) were
adopted. The losses adopted for each storm event were input into each XP-RAFTS model in the global
database. The adopted losses for pervious areas are shown in Table 4. Impervious areas were assigned
an initial loss of 1 mm and continuing loss of 0 mm/hr.
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