Site ID: 27 Lat. 25.5421 Bangladesh Rajshahi
River: Brahmaputra Long. 89.7776
Site name: Gaibanda Contributing area: 498582 km2 Ratio to Comparison Station: 1.23
Latest measurement: 24-Jul-10 Mean annual runoff: 1122 mm (2003-2009)
Hydrologic status: 3 Flood Total runoff this year (2010): 962.2 mm
Latest M/C ratio: 2.25 Seven day total: 53.3 mm
Estimated current discharge: 45819 m3/sec Percent of mean 7-day total: 142.7 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 54405 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 53227 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: Calibration to nearby ground station has been accomplished. Accuracy estimate:  Good
Discharge and runoff, based on satellite remote sensing (NASA AMSR-E data)
(For U.S, sites, nearby ground station discharge may also be shown)
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
222 2002 no data no data no data no data no data no data no data 99.4 56.8 29.9 18.1 17.4
599 2003 23.6 61.4 48.9 20.5 51.6 56.1 140.2 100.7 40.9 20.7 16.9 18.0
599 2004 20.7 58.1 31.1 35.0 31.0 56.7 123.3 95.5 44.3 66.2 20.0 17.4
1152 2005 23.3 47.4 36.0 98.8 90.8 91.0 117.3 176.2 167.1 139.4 86.5 78.4
1026 2006 67.7 73.8 95.6 73.5 93.2 129.4 131.6 126.4 126.1 108.4 0.0 0.0
1484 2007 91.5 102.1 71.0 105.2 112.4 153.4 154.3 182.3 176.6 172.2 100.5 62.8
1555 2008 93.5 127.0 90.6 79.0 124.4 143.4 141.9 205.4 192.5 145.6 127.4 84.2
1439 2009 91.8 117.2 96.1 88.9 127.4 122.8 133.5 187.1 149.7 136.9 100.7 87.3
962 2010 98.0 108.1 98.6 136.4 146.8 173.1 201.3 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 1122 Standard Deviation: 403.3
Trend in Annual Runoff (slope):  170
Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.
Explanation:   Green line records upwelling microwave emission from within 5 km radius of a calbration land target; blue line is emission from within 5 km radious of the measurement target centered over the river.
Brown line is their ratio (M/C; scale on right) and is used to estimate river discharge via a rating equation.
Rating equations are being developed and applied on an individual basis. For calibration status, see "notes" entry, above.
GoogleEarth View of Measurement Site
27.jpg
Return
Estimated
Discharge
Date m3/sec
22-Jul-02 3241
23-Jul-02 3241
24-Jul-02 14243
25-Jul-02 8847
26-Jul-02 18585
27-Jul-02 29851
28-Jul-02 28169
29-Jul-02 43602
30-Jul-02 41270
31-Jul-02 41270
1-Aug-02 44896
2-Aug-02 44896
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 31705
10-Aug-02 29190
11-Aug-02 29676
12-Aug-02 29676
13-Aug-02 13694
14-Aug-02 8172
15-Aug-02 9540
16-Aug-02 9540
17-Aug-02 34291
18-Aug-02 35954
19-Aug-02 28795
20-Aug-02 24084
21-Aug-02 20127
22-Aug-02 18687
23-Aug-02 22484
24-Aug-02 18846
25-Aug-02 15332
26-Aug-02 9103
27-Aug-02 13359
28-Aug-02 16713
29-Aug-02 20471
30-Aug-02 22899
31-Aug-02 21557
1-Sep-02 21557
2-Sep-02 21790
3-Sep-02 20411
4-Sep-02 14527
5-Sep-02 18095
6-Sep-02 17366
7-Sep-02 16620
8-Sep-02 22075
9-Sep-02 13442
10-Sep-02 13585
11-Sep-02 10743
12-Sep-02 13377
13-Sep-02 14016
14-Sep-02 14083
15-Sep-02 21136
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 5755
22-Sep-02 5755
23-Sep-02 8542
24-Sep-02 8542
25-Sep-02 5663
26-Sep-02 8032
27-Sep-02 8423
28-Sep-02 8684
29-Sep-02 12534
30-Sep-02 3241
1-Oct-02 3241
2-Oct-02 3241
3-Oct-02 3241
4-Oct-02 11115
5-Oct-02 13283
6-Oct-02 7818
7-Oct-02 8308
8-Oct-02 10023
9-Oct-02 9616
10-Oct-02 13246
11-Oct-02 11512
12-Oct-02 9602
13-Oct-02 5579
14-Oct-02 5415
15-Oct-02 4907
16-Oct-02 3734
17-Oct-02 3241
18-Oct-02 3241
19-Oct-02 3241
20-Oct-02 3241
21-Oct-02 3241
22-Oct-02 3241
23-Oct-02 3241
24-Oct-02 3241
25-Oct-02 3241
26-Oct-02 3241
27-Oct-02 3241
28-Oct-02 3241
29-Oct-02 3241
30-Oct-02 3241
31-Oct-02 3241
1-Nov-02 3241
2-Nov-02 3241
3-Nov-02 3241
4-Nov-02 3241
5-Nov-02 3241
6-Nov-02 3241
7-Nov-02 3241
8-Nov-02 3241
9-Nov-02 3241
10-Nov-02 3241
11-Nov-02 3241
12-Nov-02 3241
13-Nov-02 3241
14-Nov-02 3888
15-Nov-02 4658
16-Nov-02 5274
17-Nov-02 4466
18-Nov-02 4682
19-Nov-02 3289
20-Nov-02 3289
21-Nov-02 3646
22-Nov-02 3241
23-Nov-02 3241
24-Nov-02 3241
25-Nov-02 3241
26-Nov-02 3241
27-Nov-02 3241
28-Nov-02 3241
29-Nov-02 3241
30-Nov-02 3241
1-Dec-02 3241
2-Dec-02 3241
3-Dec-02 3241
4-Dec-02 3241
5-Dec-02 3241
6-Dec-02 3241
7-Dec-02 3241
8-Dec-02 3241
9-Dec-02 3241
10-Dec-02 3241
11-Dec-02 3241
12-Dec-02 3241
13-Dec-02 3241
14-Dec-02 3241
15-Dec-02 3241
16-Dec-02 3241
17-Dec-02 3241
18-Dec-02 3241
19-Dec-02 3241
20-Dec-02 3241
21-Dec-02 3241
22-Dec-02 3241
23-Dec-02 3241
24-Dec-02 3241
25-Dec-02 3241
26-Dec-02 3241
27-Dec-02 3241
28-Dec-02 3241
29-Dec-02 3241
30-Dec-02 3241
31-Dec-02 3241
1-Jan-03 3241
2-Jan-03 3241
3-Jan-03 3552
4-Jan-03 7611
5-Jan-03 7611
6-Jan-03 3707
7-Jan-03 3707
8-Jan-03 3241
9-Jan-03 3241
10-Jan-03 3241
11-Jan-03 3241
12-Jan-03 3241
13-Jan-03 3241
14-Jan-03 3241
15-Jan-03 3241
16-Jan-03 3241
17-Jan-03 3241
18-Jan-03 3241
19-Jan-03 3671
20-Jan-03 3241
21-Jan-03 4483