Site ID: 121 Lat. 28.3992 China Jiangxi
River: Gan Long. 115.8174
Site name: Jianguang Contributing area: 65505 km2 Ratio to Comparison Station: 0.12
Latest measurement: 30-Jul-10 Mean annual runoff: 346 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 273.7 mm
Latest M/C ratio: 1.44 Seven day total: 11.8 mm
Estimated current discharge: 1392 m3/sec Percent of mean 7-day total: 151.8 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 2471 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 2460 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
152 2002 no data no data no data no data no data no data no data 32.5 27.4 30.0 34.4 27.3
344 2003 22.1 24.5 23.1 23.4 20.2 21.2 62.6 28.9 26.1 33.9 26.1 31.6
387 2004 24.5 28.1 39.8 76.2 23.0 18.1 57.0 22.1 20.5 31.9 22.9 22.5
346 2005 22.7 21.5 30.4 47.5 27.1 32.6 53.7 20.1 22.5 21.3 21.1 25.4
287 2006 10.4 13.7 36.8 43.5 24.8 41.1 45.6 22.3 23.7 25.0 0.0 0.0
333 2007 19.5 31.9 39.2 42.5 28.6 24.4 46.4 20.5 17.6 24.7 22.3 15.9
349 2008 18.6 25.0 40.2 46.0 27.3 26.6 34.8 22.9 24.3 26.9 30.9 25.4
378 2009 20.7 20.5 37.4 42.2 24.1 31.2 49.8 28.9 32.6 35.2 28.0 27.4
274 2010 30.0 41.8 42.7 33.1 38.1 27.1 57.2 3.7 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 346 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 1390
23-Jul-02 1390
24-Jul-02 1519
25-Jul-02 1961
26-Jul-02 1468
27-Jul-02 1038
28-Jul-02 1156
29-Jul-02 1029
30-Jul-02 1572
31-Jul-02 1981
1-Aug-02 1726
2-Aug-02 1726
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 331
10-Aug-02 458
11-Aug-02 808
12-Aug-02 768
13-Aug-02 1008
14-Aug-02 1189
15-Aug-02 1233
16-Aug-02 1469
17-Aug-02 964
18-Aug-02 997
19-Aug-02 731
20-Aug-02 839
21-Aug-02 920
22-Aug-02 847
23-Aug-02 1031
24-Aug-02 963
25-Aug-02 950
26-Aug-02 1115
27-Aug-02 1005
28-Aug-02 982
29-Aug-02 931
30-Aug-02 745
31-Aug-02 905
1-Sep-02 905
2-Sep-02 1092
3-Sep-02 1114
4-Sep-02 1034
5-Sep-02 1021
6-Sep-02 973
7-Sep-02 1015
8-Sep-02 1129
9-Sep-02 1020
10-Sep-02 902
11-Sep-02 712
12-Sep-02 799
13-Sep-02 813
14-Sep-02 897
15-Sep-02 1087
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 720
22-Sep-02 720
23-Sep-02 639
24-Sep-02 639
25-Sep-02 438
26-Sep-02 567
27-Sep-02 546
28-Sep-02 614
29-Sep-02 632
30-Sep-02 738
1-Oct-02 769
2-Oct-02 949
3-Oct-02 1285
4-Oct-02 1260
5-Oct-02 968
6-Oct-02 477
7-Oct-02 601
8-Oct-02 439
9-Oct-02 632
10-Oct-02 966
11-Oct-02 920
12-Oct-02 1043
13-Oct-02 998
14-Oct-02 1029
15-Oct-02 902
16-Oct-02 967
17-Oct-02 890
18-Oct-02 821
19-Oct-02 1025
20-Oct-02 821
21-Oct-02 662
22-Oct-02 310
23-Oct-02 249
24-Oct-02 165
25-Oct-02 231
26-Oct-02 332
27-Oct-02 689
28-Oct-02 657
29-Oct-02 507
30-Oct-02 506
31-Oct-02 692
1-Nov-02 674
2-Nov-02 827
3-Nov-02 797
4-Nov-02 878
5-Nov-02 1059
6-Nov-02 1156
7-Nov-02 1041
8-Nov-02 1034
9-Nov-02 1046
10-Nov-02 1042
11-Nov-02 1181
12-Nov-02 1348
13-Nov-02 1025
14-Nov-02 537
15-Nov-02 471
16-Nov-02 226
17-Nov-02 491
18-Nov-02 689
19-Nov-02 1088
20-Nov-02 1088
21-Nov-02 830
22-Nov-02 796
23-Nov-02 784
24-Nov-02 765
25-Nov-02 852
26-Nov-02 989
27-Nov-02 919
28-Nov-02 852
29-Nov-02 812
30-Nov-02 776
1-Dec-02 801
2-Dec-02 477
3-Dec-02 529
4-Dec-02 330
5-Dec-02 459
6-Dec-02 1073
7-Dec-02 625
8-Dec-02 425
9-Dec-02 447
10-Dec-02 534
11-Dec-02 646
12-Dec-02 838
13-Dec-02 734
14-Dec-02 853
15-Dec-02 863
16-Dec-02 859
17-Dec-02 829
18-Dec-02 739
19-Dec-02 566
20-Dec-02 486
21-Dec-02 545
22-Dec-02 777
23-Dec-02 901
24-Dec-02 880
25-Dec-02 765
26-Dec-02 701
27-Dec-02 686
28-Dec-02 586
29-Dec-02 539
30-Dec-02 642
31-Dec-02 588
1-Jan-03 605
2-Jan-03 600
3-Jan-03 516
4-Jan-03 545
5-Jan-03 545
6-Jan-03 467
7-Jan-03 458
8-Jan-03 331
9-Jan-03 361
10-Jan-03 449
11-Jan-03 507
12-Jan-03 571
13-Jan-03 647
14-Jan-03 664
15-Jan-03 602
16-Jan-03 557
17-Jan-03 577
18-Jan-03 610
19-Jan-03 582
20-Jan-03 619
21-Jan-03 575
22-Jan-03 704
23-Jan-03 719
24-Jan-03 714
25-Jan-03 416
26-Jan-03 216
27-Jan-03 303
28-Jan-03 210
29-Jan-03 578
30-Jan-03 759
31-Jan-03 781
1-Feb-03 485
2-Feb-03 420
3-Feb-03 527
4-Feb-03 445
5-Feb-03 671
6-Feb-03 629
7-Feb-03 489
8-Feb-03 856
9-Feb-03 736
10-Feb-03 772
11-Feb-03 518
12-Feb-03 482
13-Feb-03 404
14-Feb-03 284
15-Feb-03 394
16-Feb-03 929
17-Feb-03 780
18-Feb-03 751
19-Feb-03 744
20-Feb-03 636
21-Feb-03 771
22-Feb-03 895
23-Feb-03 1070
24-Feb-03 788
25-Feb-03 825
26-Feb-03 819
27-Feb-03 745
28-Feb-03 692