Site ID: 133 Lat. 29.1789 China Hunan
River: Dongting Long. 112.9865
Site name: Yueyang Contributing area: 236215 km2 Ratio to Comparison Station: 0.44
Latest measurement: 30-Jul-10 Mean annual runoff: 237 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 105.8 mm
Latest M/C ratio: 1.81 Seven day total: 9.3 mm
Estimated current discharge: 3279 m3/sec Percent of mean 7-day total: 135.3 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 8746 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 8575 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
99 2002 no data no data no data no data no data no data no data 29.4 35.5 16.3 10.8 6.9
218 2003 7.6 5.3 6.1 4.6 11.7 27.1 40.8 41.9 30.7 24.5 9.0 8.5
216 2004 6.7 6.3 6.3 4.8 15.2 28.2 34.2 37.4 37.7 22.6 8.7 7.8
286 2005 5.6 3.9 8.6 4.4 16.0 37.4 40.7 65.3 57.0 32.3 8.6 6.4
170 2006 5.8 4.3 6.5 4.4 14.3 34.7 44.2 27.2 16.6 11.9 0.0 0.0
268 2007 4.4 7.8 5.9 1.9 5.3 26.6 51.0 69.7 44.9 31.2 12.6 7.1
251 2008 5.9 5.7 6.2 2.8 7.7 24.3 39.2 56.4 51.0 28.2 13.3 10.1
248 2009 6.5 6.4 6.0 3.3 18.7 34.8 39.0 54.8 46.7 16.5 8.9 6.6
106 2010 5.6 3.1 2.4 4.0 11.6 37.6 39.7 1.8 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 237 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 2408
23-Jul-02 2408
24-Jul-02 1653
25-Jul-02 1073
26-Jul-02 978
27-Jul-02 536
28-Jul-02 1288
29-Jul-02 1672
30-Jul-02 3045
31-Jul-02 3045
1-Aug-02 4676
2-Aug-02 4676
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 3904
10-Aug-02 3089
11-Aug-02 3030
12-Aug-02 3030
13-Aug-02 1648
14-Aug-02 1368
15-Aug-02 354
16-Aug-02 1007
17-Aug-02 1529
18-Aug-02 1894
19-Aug-02 2204
20-Aug-02 1685
21-Aug-02 1872
22-Aug-02 2235
23-Aug-02 3608
24-Aug-02 5659
25-Aug-02 6347
26-Aug-02 5758
27-Aug-02 4387
28-Aug-02 4386
29-Aug-02 2983
30-Aug-02 3965
31-Aug-02 5024
1-Sep-02 4928
2-Sep-02 5151
3-Sep-02 5973
4-Sep-02 5872
5-Sep-02 6465
6-Sep-02 7463
7-Sep-02 6438
8-Sep-02 6105
9-Sep-02 4403
10-Sep-02 4797
11-Sep-02 4335
12-Sep-02 3590
13-Sep-02 3688
14-Sep-02 1744
15-Sep-02
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 2851
22-Sep-02 2851
23-Sep-02 2435
24-Sep-02 2582
25-Sep-02 2842
26-Sep-02 3298
27-Sep-02 2892
28-Sep-02 2643
29-Sep-02 2123
30-Sep-02 1692
1-Oct-02 2087
2-Oct-02 2621
3-Oct-02 2557
4-Oct-02 1825
5-Oct-02 1757
6-Oct-02 1586
7-Oct-02 1771
8-Oct-02 2267
9-Oct-02 2001
10-Oct-02 2001
11-Oct-02 1574
12-Oct-02 1431
13-Oct-02 1534
14-Oct-02 1393
15-Oct-02 1192
16-Oct-02 1109
17-Oct-02 935
18-Oct-02 817
19-Oct-02 926
20-Oct-02 801
21-Oct-02 907
22-Oct-02 962
23-Oct-02 789
24-Oct-02 910
25-Oct-02 1317
26-Oct-02 1404
27-Oct-02 1516
28-Oct-02 1580
29-Oct-02 1210
30-Oct-02 837
31-Oct-02 881
1-Nov-02 519
2-Nov-02 595
3-Nov-02 1234
4-Nov-02 1223
5-Nov-02 1316
6-Nov-02 1569
7-Nov-02 1443
8-Nov-02 1655
9-Nov-02 2121
10-Nov-02 1942
11-Nov-02 1648
12-Nov-02 1524
13-Nov-02 1206
14-Nov-02 791
15-Nov-02 309
16-Nov-02 117
17-Nov-02 473
18-Nov-02 617
19-Nov-02 733
20-Nov-02 401
21-Nov-02 160
22-Nov-02 279
23-Nov-02 253
24-Nov-02 665
25-Nov-02 800
26-Nov-02 1387
27-Nov-02 1135
28-Nov-02 1041
29-Nov-02 1216
30-Nov-02 1026
1-Dec-02 889
2-Dec-02 1024
3-Dec-02 718
4-Dec-02 671
5-Dec-02 866
6-Dec-02 619
7-Dec-02 449
8-Dec-02 433
9-Dec-02 261
10-Dec-02 389
11-Dec-02 468
12-Dec-02 585
13-Dec-02 560
14-Dec-02 658
15-Dec-02 888
16-Dec-02 951
17-Dec-02 588
18-Dec-02 612
19-Dec-02 349
20-Dec-02 290
21-Dec-02 442
22-Dec-02 315
23-Dec-02 279
24-Dec-02 437
25-Dec-02 447
26-Dec-02 689
27-Dec-02 851
28-Dec-02 851
29-Dec-02 835
30-Dec-02 831
31-Dec-02 751
1-Jan-03 698
2-Jan-03 743
3-Jan-03 844
4-Jan-03 1035
5-Jan-03 1035
6-Jan-03 684
7-Jan-03 633
8-Jan-03 371
9-Jan-03 432
10-Jan-03 460
11-Jan-03 490
12-Jan-03 626
13-Jan-03 919
14-Jan-03 919
15-Jan-03 876
16-Jan-03 730
17-Jan-03 551
18-Jan-03 516
19-Jan-03 528
20-Jan-03 630
21-Jan-03 588
22-Jan-03 724
23-Jan-03 816
24-Jan-03 756
25-Jan-03 749
26-Jan-03 773
27-Jan-03 632
28-Jan-03 649
29-Jan-03 767
30-Jan-03 322
31-Jan-03 371
1-Feb-03 421
2-Feb-03 270
3-Feb-03 453
4-Feb-03 589
5-Feb-03 582
6-Feb-03 672
7-Feb-03 621
8-Feb-03 662
9-Feb-03 662
10-Feb-03 612
11-Feb-03 612
12-Feb-03 384
13-Feb-03 283
14-Feb-03 61
15-Feb-03 61
16-Feb-03 345
17-Feb-03 579
18-Feb-03 878
19-Feb-03 909
20-Feb-03 999
21-Feb-03 744
22-Feb-03 654
23-Feb-03 223
24-Feb-03 477