Tfs A - IFD Analysis

Tfs A - IFD

7:30pm 05/05/2026 to 7:30pm 07/05/2026

You can find out more about Design Rainfall and IFD here.

Observations for this analysis :

Maximum observed rainfall by duration, estimated return period and AEP

Duration

Rainfall

Start

End

Years

AEP

30m

2.2 mm

6:50pm 07/05/2026

7:20pm 07/05/2026

1 in 1 years

100.0 %

60m

4.2 mm

6:20pm 07/05/2026

7:20pm 07/05/2026

1 in 1 years

100.0 %

90m

5.8 mm

5:50pm 07/05/2026

7:20pm 07/05/2026

1 in 1 years

100.0 %

120m

7.2 mm

5:20pm 07/05/2026

7:20pm 07/05/2026

1 in 1 years

100.0 %

10.8 mm

4:20pm 07/05/2026

7:20pm 07/05/2026

1 in 1.0 years

99.97 %

13.2 mm

2:50pm 07/05/2026

7:20pm 07/05/2026

1 in 1.0 years

99.92 %

14.2 mm

1:20pm 07/05/2026

7:20pm 07/05/2026

1 in 1 years

100.0 %

17.8 mm

2:50pm 06/05/2026

11:50pm 06/05/2026

1 in 1.0 years

99.89 %

12h

20.0 mm

2:50pm 06/05/2026

2:50am 07/05/2026

1 in 1.0 years

99.85 %

18h

22.2 mm

1:50pm 06/05/2026

7:50am 07/05/2026

1 in 1.0 years

99.93 %

24h

18.0 mm

4:20am 06/05/2026

4:20am 07/05/2026

1 in 1 years

100.0 %

30h

20.0 mm

11:20pm 05/05/2026

5:20am 07/05/2026

1 in 1 years

100.0 %

36h

21.4 mm

7:50pm 05/05/2026

7:50am 07/05/2026

1 in 1 years

100.0 %

Note: A '1 in 1.0 years' estimate means that it is almost certain to occur at least once in a year, and could occur much more than once per year on average. For smaller values like this the Annual Recurrance Interval (ARI) may be of more relevance, but it is complex to calculate for common events.

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