Site ID:

2541

Lat.

26.2325

India

Assam

River:

Brahmaputra

Long.

91.1009

Site name:

Goalpara

Contributing area:

424788

km2

Ratio to Comparison Station:

1.05

Latest measurement:

11-Oct-09

Mean annual runoff:

514

(2003-2007)

Hydrologic status:

Normal flow

Total runoff this year:

1328

Latest M/C ratio:

1.71

Seven day total:

Estimated current discharge:

19909

m3/sec

Percent of mean 7-day total:

90.7

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

Ice-cover determination:

5 yr recurrence flood:

65920

m3/sec

(from Log Pearson III analysis)

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

54412

m3/sec

(from Gumbel Extreme Value analysis)

Comparison Station Information:

Pandu (2851300)

Contributing Area:

sq mi

405697

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 comparison of montly means from a distant station in the region

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

0.0

2003

0.0

2004

0.0

794

2005

0.0

2.3

107.1

99.0

10.2

0.0

152.0

165.2

116.0

73.5

68.3

349

2006

39.0

0.0

92.4

119.0

98.8

0.0

1425

2007

66.6

46.5

79.7

79.9

100.4

133.3

141.2

248.8

225.8

146.8

97.3

58.5

1328

2008

70.0

76.3

89.5

102.6

98.5

101.4

146.7

160.4

204.0

112.9

94.7

70.8

962

2009

63.1

68.6

83.9

87.9

79.4

87.5

133.7

175.1

137.4

45.7

0.0

Mean Annual Runoff:

649

Standard Deviation:

635

Trend in Annual Runoff (slope)

267.56

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