Jabatan Pengairan dan Saliran Malaysia

Source is M:\Datanegeri\Perak\Wlevel.mtd

Monthly means 1980 to 2000 site 4012401 SG. BIDOR at MALAYAN BIDOR BHD.

Flow m3/s

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Mean

1980 ? ? 9.85 15.15 18.85 ? 3.08 9.54 11.32 23.91 19.97 16.94 14.28?

1981 13.38 10.96 5.32 11.43 17.20 10.11 ? ? ? 5.38 15.50 6.41 10.61?

1982 3.24 9.44 6.41 14.28 18.70 15.29 12.25 14.01 14.95 20.40 24.86 20.52 14.54

1983 15.45 8.17 14.10 2.72 3.96 1.23 3.85 6.88 18.17 8.70 9.62 11.62 8.72

1984 13.18 27.97 18.39 15.05 12.18 10.28 15.04 3.20 3.37 7.14 23.07 22.28 14.20

1985 10.62 12.20 13.60 11.24 15.83 6.19 6.11 5.62 5.87 23.58 33.64 17.15 13.47

1986 ? 13.68 10.60 17.19 14.62 9.11 7.87 4.63 7.98 18.16 25.45 15.38 13.13?

1987 9.87 11.65 10.20 14.97 16.15 14.33 14.73 25.76 18.08 35.33 25.12 ? 17.89?

1988 16.05 16.69 9.77 9.36 11.37 12.84 12.26 12.19 18.06 9.51 12.25 13.17 12.77

1989 11.18 8.83 11.48 15.24 14.18 11.71 10.36 5.89 10.05 17.52 20.31 14.41 12.61

1990 9.36 8.15 7.56 ? 11.89 ? 8.13 5.03 8.69 14.99 ? ? 9.24?

1991 ? 13.55 16.86 22.70 ? 22.61 17.26 11.52 12.80 ? 23.28 ? 17.58?

1992 17.11 17.52 15.00 ? 20.42 13.14 15.54 12.07 13.35 ? 23.16 ? 16.36?

1993 ? ? ? 25.78 23.66 22.72 19.11 15.54 23.77 28.13 34.61 47.51 26.76?

1994 14.05 10.07 9.56 18.90 16.81 13.61 12.69 10.27 12.95 14.73 15.07 24.62 14.47

1995 46.71 ? 48.49 59.72 25.43 ? ? 26.62 20.17 19.11 22.48 26.31 32.77?

1996 16.56 12.01 11.96 21.81 16.77 16.41 11.41 11.52 12.10 ? 12.23 20.07 14.81?

1997 ? 16.09 18.82 15.50 10.49 14.70 15.88 7.41 ? ? 18.80 8.47 13.97?

1998 8.21 6.13 5.96 5.42 10.04 8.25 11.34 10.11 8.85 6.78 ? 8.62 8.18?

1999 8.73 ? 11.56 ? 12.43 6.31 5.39 5.69 9.83 ? 11.63 10.57 9.12?

2000 13.51 10.81 12.94 15.69 10.69 ? ? 5.75 5.12 6.15 8.02 ? 9.85?

Min. 3.24 6.13 5.32 2.72 3.96 1.23 3.08 3.20 3.37 5.38 8.02 6.41 8.72

Mean 14.20 12.58 13.42 17.34 15.08 12.28 11.24 10.46 12.39 16.22 19.95 17.75 12.97

Max. 46.71 27.97 48.49 59.72 25.43 22.72 19.11 26.62 23.77 35.33 34.61 47.51 14.54

Remarks:

1. The Min Mean and Max of Annual means are for complete years only.

2. ‘?’ means incomplete data for the month.

3. ‘xxxx?’ means total amount with incomplete data.