Return periods (year)

Stations

10

20

50

100

Gaoua

15

17

20

22

Ouo

15

17

19

21

Dissin

14

16

18

20

Diebougou

14

16

19

21

Boura

14

16

18

20

Leo

13

15

17

19

Dano

14

16

18

20

Koumbia

13

15

17

19

Hounde

14

16

18

20

Fara

14

16

18

20

Bereba

15

17

20

22

Gao

14

16

18

20

Bagassi

14

15

17

19

Boromo

14

16

19

20

Bondoukuy

14

15

18

19

Ouakara

12

14

16

17

Average

14

16

18

20

STD

1

1

1

1