Site ID:

1122

Lat.

-12.4846

Brazil

River:

Tocantins

Long.

-48.2321

Site name:

Contributing area:

128360

km2

Ratio to Comparison Station:

5.52

Latest measurement:

7-Jan-10

Mean annual runoff:

173

(2003-2007)

Hydrologic status:

Flood

Total runoff this year:

478

Latest M/C ratio:

1.52

Seven day total:

Estimated current discharge:

m3/sec

Percent of mean 7-day total:

116.3

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

Ice-cover determination:

5 yr recurrence flood:

2846

m3/sec

(from Log Pearson III analysis)

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

2772

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

1.1

0.3

0.4

0.1

2003

0.1

0.7

0.1

0.2

0.6

0.2

0.1

2004

0.1

0.3

0.5

0.2

2005

0.1

2.3

2.6

1.1

2.1

3.5

1.9

25.9

40.1

291

2006

3.2

3.9

15.9

26.4

34.2

42.6

47.4

48.4

38.3

30.9

0.0

487

2007

36.1

25.7

37.8

38.4

48.2

45.2

46.9

51.9

47.8

46.4

30.9

32.0

478

2008

31.9

26.7

35.1

34.8

42.4

48.4

50.2

49.6

51.4

33.4

31.5

462

2009

29.6

34.0

40.2

33.8

41.7

40.6

47.5

47.7

40.8

40.4

34.7

30.7

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