Site ID: 201 Lat. 25.2985 India Bihar
River: Ganges Long. 87.6765
Site name: Sahibganj Contributing area: 905650 km2 Ratio to Comparison Station: 1.69
Latest measurement: 30-Jul-10 Mean annual runoff: 60 mm (2003-2009)
Hydrologic status: 1 Low flow Total runoff this year (2010): 20.6 mm
Latest M/C ratio: 1.21 Seven day total: 0.6 mm
Estimated current discharge: 430 m3/sec Percent of mean 7-day total: 62.1 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 7381 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 7312 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Pakse (2469260)           Contributing Area:   sq mi 536010 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 not yet been accomplished.
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
28 2002 no data no data no data no data no data no data no data 6.0 5.2 8.3 4.7 4.0
75 2003 3.6 4.5 4.3 3.5 2.4 2.0 5.8 9.1 15.5 13.2 6.0 5.0
59 2004 4.6 5.0 5.0 4.3 4.4 2.6 3.8 6.6 7.4 7.2 4.1 3.9
57 2005 4.2 4.6 4.3 3.4 4.4 3.4 4.7 4.9 7.7 7.3 4.5 3.3
41 2006 3.3 3.1 3.7 3.7 3.7 2.7 1.5 3.1 8.2 8.0 0.0 0.0
67 2007 3.1 3.6 3.8 3.7 3.4 3.4 2.2 10.0 13.6 11.6 5.6 3.0
69 2008 3.6 3.6 3.6 3.3 3.8 2.1 4.3 10.4 15.3 10.0 5.5 3.9
50 2009 3.6 3.9 4.0 3.6 3.8 3.5 2.8 2.4 5.8 7.9 5.1 3.7
21 2010 3.0 3.2 3.6 2.9 2.9 2.5 2.5 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 60 Standard Deviation: 6.4
Trend in Annual Runoff (slope):  5.9
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
Return
Estimated
Disharge
Data
Date m3/sec
22-Jul-02 46
23-Jul-02 46
24-Jul-02 326
25-Jul-02 520
26-Jul-02 733
27-Jul-02 1107
28-Jul-02 1223
29-Jul-02 1347
30-Jul-02 1412
31-Jul-02 1412
1-Aug-02 1573
2-Aug-02 1573
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 3944
10-Aug-02 3330
11-Aug-02 2895
12-Aug-02 2895
13-Aug-02 1554
14-Aug-02 1056
15-Aug-02 838
16-Aug-02 1248
17-Aug-02 2098
18-Aug-02 2293
19-Aug-02 2582
20-Aug-02 2617
21-Aug-02 2570
22-Aug-02 2289
23-Aug-02 2289
24-Aug-02 2177
25-Aug-02 2730
26-Aug-02 2977
27-Aug-02 3304
28-Aug-02 3778
29-Aug-02 3582
30-Aug-02 3862
31-Aug-02 3321
1-Sep-02 3357
2-Sep-02 3086
3-Sep-02 2932
4-Sep-02 2823
5-Sep-02 2858
6-Sep-02 3006
7-Sep-02 2574
8-Sep-02 2574
9-Sep-02 1932
10-Sep-02 2260
11-Sep-02 2440
12-Sep-02 2279
13-Sep-02 2299
14-Sep-02 1978
15-Sep-02 1802
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 880
22-Sep-02 880
23-Sep-02 1528
24-Sep-02 1528
25-Sep-02 1689
26-Sep-02 1112
27-Sep-02 1452
28-Sep-02 1950
29-Sep-02 2206
30-Sep-02 3539
1-Oct-02 3669
2-Oct-02 3497
3-Oct-02 3951
4-Oct-02 3923
5-Oct-02 3827
6-Oct-02 3968
7-Oct-02 3483
8-Oct-02 3464
9-Oct-02 3221
10-Oct-02 3221
11-Oct-02 3303
12-Oct-02 3295
13-Oct-02 3148
14-Oct-02 3028
15-Oct-02 2864
16-Oct-02 2849
17-Oct-02 2957
18-Oct-02 1378
19-Oct-02 1789
20-Oct-02 1444
21-Oct-02 1786
22-Oct-02 2543
23-Oct-02 2485
24-Oct-02 2739
25-Oct-02 2253
26-Oct-02 2253
27-Oct-02 1964
28-Oct-02 2277
29-Oct-02 2115
30-Oct-02 2241
31-Oct-02 2316
1-Nov-02 2179
2-Nov-02 2560
3-Nov-02 1921
4-Nov-02 2018
5-Nov-02 1595
6-Nov-02 1738
7-Nov-02 1846
8-Nov-02 1917
9-Nov-02 2318
10-Nov-02 2004
11-Nov-02 2004
12-Nov-02 1487
13-Nov-02 1574
14-Nov-02 1551
15-Nov-02 1526
16-Nov-02 1578
17-Nov-02 1384
18-Nov-02 1314
19-Nov-02 1326
20-Nov-02 1590
21-Nov-02 1577
22-Nov-02 1536
23-Nov-02 1553
24-Nov-02 1373
25-Nov-02 1490
26-Nov-02 1617
27-Nov-02 1617
28-Nov-02 1259
29-Nov-02 1265
30-Nov-02 989
1-Dec-02 1022
2-Dec-02 1071
3-Dec-02 1035
4-Dec-02 1135
5-Dec-02 1190
6-Dec-02 1379
7-Dec-02 1425
8-Dec-02 1388
9-Dec-02 1440
10-Dec-02 1295
11-Dec-02 1301
12-Dec-02 1325
13-Dec-02 1325
14-Dec-02 1388
15-Dec-02 1507
16-Dec-02 1512
17-Dec-02 1533
18-Dec-02 1563
19-Dec-02 1445
20-Dec-02 1496
21-Dec-02 1370
22-Dec-02 1535
23-Dec-02 1407
24-Dec-02 1516
25-Dec-02 1573
26-Dec-02 1403
27-Dec-02 1601
28-Dec-02 1355
29-Dec-02 1355
30-Dec-02 1123
31-Dec-02 1310
1-Jan-03 1287
2-Jan-03 1266
3-Jan-03 1455
4-Jan-03 1298
5-Jan-03 1298
6-Jan-03 1192
7-Jan-03 1232
8-Jan-03 1030
9-Jan-03 1075
10-Jan-03 1092
11-Jan-03 1075
12-Jan-03 1230
13-Jan-03 1210
14-Jan-03 1210
15-Jan-03 903
16-Jan-03 1046
17-Jan-03 1035
18-Jan-03 1111
19-Jan-03 1278
20-Jan-03 1259
21-Jan-03 1317
22-Jan-03 1237
23-Jan-03 1331
24-Jan-03 1105
25-Jan-03 1186
26-Jan-03 1188
27-Jan-03 1120
28-Jan-03 1388
29-Jan-03 1265
30-Jan-03 1265
31-Jan-03 1253
1-Feb-03 1307
2-Feb-03 1394
3-Feb-03 1460
4-Feb-03 1516
5-Feb-03 1602
6-Feb-03 1678
7-Feb-03 1694
8-Feb-03 1770
9-Feb-03 1679
10-Feb-03 1708
11-Feb-03 1708
12-Feb-03 1580
13-Feb-03 1617
14-Feb-03 1675
15-Feb-03 1675
16-Feb-03 1744
17-Feb-03 1703
18-Feb-03 1607
19-Feb-03 1652
20-Feb-03 1665
21-Feb-03 1824
22-Feb-03 1946
23-Feb-03 1934
24-Feb-03 1862
25-Feb-03 1777
26-Feb-03 1864
27-Feb-03 1889
28-Feb-03 2010
1-Mar-03 2110
2-Mar-03 2052
3-Mar-03 2052
4-Mar-03 2187 </