Site ID:

1581

Lat.

-18.4374

Madagascar

Toamasina

River:

Mangoro

Long.

48.2486

Site name:

Mandialaza

Contributing area:

898

km2

Ratio to Comparison Station:

0.04

Latest measurement:

15-Nov-09

Mean annual runoff:

166

(2003-2007)

Hydrologic status:

Normal flow

Total runoff this year:

142

Latest M/C ratio:

1.10

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

100.0

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

Ice-cover determination:

5 yr recurrence flood:

439

m3/sec

(from Log Pearson III analysis)

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

386

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

2002

no data

7.7

10.3

9.9

9.6

9.9

119

2003

12.4

8.9

11.0

9.6

9.9

9.6

9.9

9.6

9.9

8.0

9.9

117

2004

9.9

9.3

9.9

9.6

9.9

9.3

9.9

9.6

9.9

9.6

9.9

259

2005

9.9

152.6

9.9

9.6

9.9

9.6

8.9

9.9

9.6

9.9

9.3

9.9

131

2006

9.3

44.2

9.9

9.6

9.9

9.3

9.9

9.6

0.0

207

2007

15.6

11.9

9.9

90.1

9.9

9.6

9.9

9.6

9.9

9.6

11.0

142

2008

18.6

26.0

9.9

9.6

9.9

8.9

9.9

9.6

9.9

9.6

9.9

103

2009

9.9

8.9

9.9

9.6

9.9

9.6

9.9

9.6

9.9

5.8

0.0

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