Site ID:

1578

Lat.

-17.7573

Madagascar

Toamasina

River:

Lake Alaotra

Long.

48.3023

Site name:

Morarano Sud

Contributing area:

3810

km2

Ratio to Comparison Station:

0.23

Latest measurement:

15-Nov-09

Mean annual runoff:

775

(2003-2007)

Hydrologic status:

Normal flow

Total runoff this year:

828

Latest M/C ratio:

1.12

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

96.1

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

Ice-cover determination:

5 yr recurrence flood:

264

m3/sec

(from Log Pearson III analysis)

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

261

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

Antsatrana (1389500)

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

240

2002

no data

59.2

59.8

37.6

18.7

65.1

939

2003

135.1

88.4

94.1

80.5

100.2

87.9

87.4

81.7

50.2

59.1

26.1

48.5

514

2004

79.5

58.6

34.5

29.8

42.7

37.9

50.3

53.5

44.5

31.0

16.5

35.1

986

2005

109.9

89.7

104.5

105.0

91.5

99.7

102.7

69.3

61.8

49.4

22.3

80.0

457

2006

104.5

73.1

43.1

37.2

45.7

38.7

34.2

33.7

26.2

20.6

0.0

981

2007

109.9

108.4

121.6

109.1

92.9

79.2

74.5

82.6

66.4

52.0

49.2

34.8

828

2008

117.6

99.3

72.5

53.8

56.6

49.2

47.9

49.7

46.2

37.8

84.8

112.4

664

2009

108.8

83.5

67.3

62.0

77.1

59.7

51.2

55.3

43.7

39.9

15.2

0.0

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