Site ID: 43 Lat. 29.3377 China Hunan
River: Dongting Long. 113.0105
Site name: Yueyang Contributing area: 240048 km2 Ratio to Comparison Station: 0.45
Latest measurement: 24-Jul-10 Mean annual runoff: 329 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 128.3 mm
Latest M/C ratio: 1.93 Seven day total: 10.8 mm
Estimated current discharge: 3941 m3/sec Percent of mean 7-day total: 115.8 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 8914 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 8722 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
138 2002 no data no data no data no data no data no data no data 32.9 37.5 34.2 19.5 14.2
299 2003 16.0 11.4 12.0 13.6 15.8 29.0 38.8 43.4 41.8 39.1 19.6 18.6
288 2004 14.5 17.3 16.4 13.4 19.4 31.3 33.8 38.8 38.2 31.1 18.6 15.3
360 2005 12.4 8.7 19.8 17.5 26.6 38.2 39.9 63.4 54.8 34.7 23.9 20.0
301 2006 16.0 16.4 20.7 15.9 11.7 39.0 56.9 54.8 39.8 29.8 0.0 0.0
401 2007 15.1 21.9 19.8 11.3 20.9 47.8 50.5 75.9 41.6 49.3 28.9 18.1
303 2008 12.0 15.7 19.2 14.0 22.4 31.0 39.1 44.9 39.1 34.3 8.3 22.6
349 2009 18.4 15.9 18.0 10.7 16.2 40.5 27.6 66.7 54.1 38.9 22.2 20.0
128 2010 14.9 11.6 14.1 9.8 17.1 25.5 35.3 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 329 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 3015
23-Jul-02 3015
24-Jul-02 1892
25-Jul-02 1690
26-Jul-02 912
27-Jul-02 323
28-Jul-02 1942
29-Jul-02 2016
30-Jul-02 3977
31-Jul-02 3977
1-Aug-02 4246
2-Aug-02 4246
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 4835
10-Aug-02 3847
11-Aug-02 3502
12-Aug-02 3502
13-Aug-02 1997
14-Aug-02 1612
15-Aug-02 1242
16-Aug-02 1540
17-Aug-02 2460
18-Aug-02 2545
19-Aug-02 2610
20-Aug-02 1988
21-Aug-02 1524
22-Aug-02 2097
23-Aug-02 3351
24-Aug-02 5957
25-Aug-02 6263
26-Aug-02 5732
27-Aug-02 5423
28-Aug-02 4935
29-Aug-02 3647
30-Aug-02 5860
31-Aug-02 6484
1-Sep-02 6475
2-Sep-02 6904
3-Sep-02 7120
4-Sep-02
5-Sep-02 4562
6-Sep-02 4547
7-Sep-02 4774
8-Sep-02 4797
9-Sep-02 4875
10-Sep-02 4690
11-Sep-02 4147
12-Sep-02 4139
13-Sep-02 4118
14-Sep-02 4167
15-Sep-02 5959
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 3966
22-Sep-02 3966
23-Sep-02 3291
24-Sep-02 3883
25-Sep-02 3016
26-Sep-02 3365
27-Sep-02 2746
28-Sep-02 2854
29-Sep-02 3021
30-Sep-02 2744
1-Oct-02 3886
2-Oct-02 4279
3-Oct-02 4348
4-Oct-02 4715
5-Oct-02 4708
6-Oct-02 4511
7-Oct-02 4142
8-Oct-02 4032
9-Oct-02 2617
10-Oct-02 2617
11-Oct-02 2608
12-Oct-02 2517
13-Oct-02 2559
14-Oct-02 3020
15-Oct-02 2854
16-Oct-02 3565
17-Oct-02 4514
18-Oct-02 2834
19-Oct-02 2825
20-Oct-02 1975
21-Oct-02 1885
22-Oct-02 2028
23-Oct-02 1669
24-Oct-02 1671
25-Oct-02 2180
26-Oct-02 2180
27-Oct-02 3236
28-Oct-02 3129
29-Oct-02 2807
30-Oct-02 2688
31-Oct-02 2303
1-Nov-02 1560
2-Nov-02 1499
3-Nov-02 1587
4-Nov-02 2042
5-Nov-02 2367
6-Nov-02 2443
7-Nov-02 2426
8-Nov-02 2263
9-Nov-02 2668
10-Nov-02 2922
11-Nov-02 2701
12-Nov-02 2690
13-Nov-02 2154
14-Nov-02 1511
15-Nov-02 879
16-Nov-02 568
17-Nov-02 949
18-Nov-02 1287
19-Nov-02 1956
20-Nov-02 1327
21-Nov-02 1174
22-Nov-02 1504
23-Nov-02 1205
24-Nov-02 1472
25-Nov-02 1667
26-Nov-02 931
27-Nov-02 1356
28-Nov-02 2298
29-Nov-02 2413
30-Nov-02 2249
1-Dec-02 2174
2-Dec-02 1968
3-Dec-02 1483
4-Dec-02 1785
5-Dec-02 1490
6-Dec-02 952
7-Dec-02 782
8-Dec-02 774
9-Dec-02 487
10-Dec-02 749
11-Dec-02 779
12-Dec-02 1071
13-Dec-02 1240
14-Dec-02 1500
15-Dec-02 1630
16-Dec-02 1626
17-Dec-02 1083
18-Dec-02 1061
19-Dec-02 762
20-Dec-02 716
21-Dec-02 1127
22-Dec-02 879
23-Dec-02 956
24-Dec-02 1093
25-Dec-02 930
26-Dec-02 1347
27-Dec-02 1568
28-Dec-02 1788
29-Dec-02 1881
30-Dec-02 1927
31-Dec-02 1729
1-Jan-03 1658
2-Jan-03 1541
3-Jan-03 1592
4-Jan-03 1865
5-Jan-03 1865
6-Jan-03 1207
7-Jan-03 1191
8-Jan-03 1182
9-Jan-03 1111
10-Jan-03 1305
11-Jan-03 1362
12-Jan-03 1113
13-Jan-03 1828
14-Jan-03 1828
15-Jan-03 2210
16-Jan-03 2015
17-Jan-03 1754
18-Jan-03 1807
19-Jan-03 1750
20-Jan-03 1614
21-Jan-03 1607
22-Jan-03 1248
23-Jan-03 1300
24-Jan-03 1256
25-Jan-03 1121
26-Jan-03 1084
27-Jan-03 989
28-Jan-03 924
29-Jan-03 1356
30-Jan-03 874
31-Jan-03 810
1-Feb-03 879
2-Feb-03 663
3-Feb-03 881
4-Feb-03 1137
5-Feb-03 1147
6-Feb-03 1312
7-Feb-03 1179
8-Feb-03 1582
9-Feb-03 1590
10-Feb-03 1543
11-Feb-03 1543
12-Feb-03 1039
13-Feb-03 1010
14-Feb-03 877
15-Feb-03 328
16-Feb-03 608
17-Feb-03 1003
18-Feb-03 977
19-Feb-03 1729
20-Feb-03 1788
21-Feb-03 1554
22-Feb-03 1842
23-Feb-03 972
24-Feb-03 641
25-Feb-03 614
26-Feb-03 879
27-Feb-03 1210
28-Feb-03 1275
1-Mar-03 1235
2-Mar-03 907
3-Mar-03 779
4-Mar-03 483
5-Mar-03 630
6-Mar-03 533
7-Mar-03 482
8-Mar-03 613
9-Mar-03 799
10-Mar-03 1178