Site ID:

1587

Lat.

-23.3290

Madagascar

Fianarantsoa

River:

Mananara

Long.

47.5397

Site name:

Vangaindrano

Contributing area:

16189

km2

Ratio to Comparison Station:

0.96

Latest measurement:

15-Nov-09

Mean annual runoff:

399

(2003-2007)

Hydrologic status:

Normal flow

Total runoff this year:

296

Latest M/C ratio:

1.17

Seven day total:

Estimated current discharge:

157

m3/sec

Percent of mean 7-day total:

134.4

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

Ice-cover determination:

5 yr recurrence flood:

636

m3/sec

(from Log Pearson III analysis)

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

630

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

Maroangaty (1389600)

Contributing Area:

7280

sq mi

16866

sq km

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

Notes:

Rating equation is based on monthly mean, maximum, and minimum M/C compared to gaging station discharge values.

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

187

2002

no data

43.2

40.7

35.5

26.1

41.9

476

2003

45.4

41.8

42.4

35.3

41.8

43.6

44.5

51.5

40.5

32.1

20.7

36.4

607

2004

35.0

64.7

65.7

49.1

69.6

48.8

55.4

54.5

44.7

31.3

36.8

51.5

396

2005

57.5

61.2

50.1

23.6

21.0

49.7

36.1

30.2

25.9

15.2

9.2

15.9

237

2006

21.0

21.9

22.5

15.3

19.0

22.5

30.7

31.5

30.9

21.4

0.0

278

2007

20.7

34.4

29.3

26.4

24.6

27.0

26.9

28.9

22.8

16.4

10.8

9.9

296

2008

15.6

25.0

27.1

28.3

22.3

21.5

33.4

39.3

32.7

22.7

12.8

15.7

288

2009

30.0

25.1

22.6

22.4

21.4

25.3

34.5

36.4

30.7

26.6

13.1

0.0

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