Site ID:

244

Lat.

16.2225

Thailand

Roi

River:

Chi

Long.

103.7027

Site name:

Ban Bung Kha

Contributing area:

40177

km2

Ratio to Comparison Station:

1.73

Latest measurement:

10-Nov-09

Mean annual runoff:

154

(2003-2007)

Hydrologic status:

Normal flow

Total runoff this year:

375

Latest M/C ratio:

1.18

Seven day total:

Estimated current discharge:

285

m3/sec

Percent of mean 7-day total:

59.2

(today's value compared to mean for same period, 2003-2007)

Ice-cover determination:

5 yr recurrence flood:

1621

m3/sec

(from Log Pearson III analysis)

Status Codes: 1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood

1582

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

Tokwe Confluence D/s C/s (1495240)

Contributing Area:

7280

sq mi

23237

sq km

(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)

Notes:

Comparison station is placeholder, only; this site is not yet calibrated to actual discharge

Discharge and runoff, based on satellite remote sensing (NASA AMSR-E data)

(For U.S, sites, nearby ground station discharge may also be shown)

2008-Present

2002-Present

Annual

Monthly Total Runoff (mm), computed from above satellite-based discharge data

Runoff

(mm)

Jan

Feb

Mar

April

May

June

July

Aug

Sept

Oct

Nov

Dec

247

2002

no data

0.2

32.8

104.2

78.1

31.4

109

2003

17.0

1.2

0.5

4.9

22.7

15.0

1.8

0.7

14.5

23.8

5.5

1.7

149

2004

4.5

4.3

0.2

0.4

39.7

26.3

13.0

30.8

17.7

6.2

4.0

1.9

2005

4.9

2.7

0.2

0.7

5.4

17.4

0.6

0.2

7.3

28.0

17.8

122

2006

57.4

10.4

0.2

4.4

1.8

3.7

7.2

1.8

1.7

33.1

0.0

306

2007

53.2

31.0

1.9

0.4

18.8

14.0

6.0

22.5

2.7

54.3

69.2

32.4

375

2008

52.6

32.3

5.8

1.6

6.9

20.0

21.7

2.7

16.4

60.4

77.8

76.5

238

2009

103.3

49.3

1.6

0.2

7.1

14.6

26.5

7.1

2.6

15.8

9.8

0.0

Discharge is estimated directly via a rating equation from the remote sensing data (M/C ratio) shown below.