Site ID: 2101 Lat. 29.8850 China Zhejiang
River: Puyang Long. 120.2854
Site name: Diankou Contributing area: 3113 km2 Ratio to Comparison Station: 0.11
Latest measurement: 21-Jul-10 Mean annual runoff: 8820 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 5267.3 mm
Latest M/C ratio: 1.27 Seven day total: 160.4 mm
Estimated current discharge: 669 m3/sec Percent of mean 7-day total: 83.5 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 2193 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 2190 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Boluo (2186950)           Contributing Area:   sq mi 28239 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes: Final calibration to discharge 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
2507 2002 no data no data no data no data no data no data no data 320.8 375.0 615.2 532.8 662.9
9142 2003 871.4 818.7 964.6 980.1 1154.7 1028.3 964.8 523.5 474.8 416.2 346.0 598.3
8636 2004 627.0 912.6 924.1 1043.5 1074.7 1196.4 829.3 312.3 270.9 467.3 405.8 572.4
9270 2005 664.1 594.5 1095.1 905.0 1139.1 1219.2 837.0 483.2 506.5 569.1 592.8 664.7
8040 2006 735.4 728.3 1032.7 998.3 1074.8 1006.5 924.8 574.8 450.4 514.5 0.0 0.0
9222 2007 713.2 774.4 812.5 826.4 1108.3 1168.4 1011.3 591.2 449.7 561.6 616.5 588.4
8586 2008 539.1 470.4 707.9 762.3 968.4 988.6 970.2 639.3 635.3 598.0 622.5 684.0
8845 2009 644.8 565.2 839.1 1016.1 988.7 1044.5 847.4 635.7 438.1 597.2 601.7 626.0
5267 2010 775.4 670.4 959.8 771.3 687.2 808.4 594.9 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 8820 Standard Deviation: 6.4
Trend in Annual Runoff (slope):  -73
Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.
Green line records upwelling microwave emission from within 5 km radius of a calbration land target. 
Explanation:   Blue line is emission from within 5 km radius of the measurement target centered over the river.
Brown line is their ratio (M/C; "HR" in Brakenridge et al 2007; 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 using available ground-based discharge information.
GoogleEarth View of Measurement Site
Return
Estimated
Disharge
Data
Date m3/sec
22-Jul-02 290
23-Jul-02 290
24-Jul-02 337
25-Jul-02 789
26-Jul-02 789
27-Jul-02 951
28-Jul-02 1003
29-Jul-02 650
30-Jul-02 571
31-Jul-02 476
1-Aug-02 192
2-Aug-02 338
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02
10-Aug-02 480
11-Aug-02 480
12-Aug-02 315
13-Aug-02 424
14-Aug-02 235
15-Aug-02 261
16-Aug-02 296
17-Aug-02 307
18-Aug-02 507
19-Aug-02 590
20-Aug-02 490
21-Aug-02 296
22-Aug-02 361
23-Aug-02 312
24-Aug-02 544
25-Aug-02 791
26-Aug-02 737
27-Aug-02 737
28-Aug-02 626
29-Aug-02 696
30-Aug-02 752
31-Aug-02 790
1-Sep-02 786
2-Sep-02 806
3-Sep-02 904
4-Sep-02 863
5-Sep-02 767
6-Sep-02 588
7-Sep-02 620
8-Sep-02 548
9-Sep-02 688
10-Sep-02 858
11-Sep-02 812
12-Sep-02 812
13-Sep-02 634
14-Sep-02 634
15-Sep-02
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 257
22-Sep-02 223
23-Sep-02 260
24-Sep-02 260
25-Sep-02 209
26-Sep-02 218
27-Sep-02 241
28-Sep-02 241
29-Sep-02 609
30-Sep-02 675
1-Oct-02 640
2-Oct-02 778
3-Oct-02 754
4-Oct-02 752
5-Oct-02 1023
6-Oct-02 387
7-Oct-02 648
8-Oct-02 420
9-Oct-02 558
10-Oct-02 731
11-Oct-02 602
12-Oct-02 858
13-Oct-02 791
14-Oct-02 791
15-Oct-02 889
16-Oct-02 921
17-Oct-02 941
18-Oct-02 891
19-Oct-02 878
20-Oct-02 682
21-Oct-02 572
22-Oct-02 553
23-Oct-02 483
24-Oct-02 519
25-Oct-02 575
26-Oct-02 540
27-Oct-02 761
28-Oct-02 890
29-Oct-02 921
30-Oct-02 921
31-Oct-02 498
1-Nov-02 402
2-Nov-02 223
3-Nov-02 327
4-Nov-02 362
5-Nov-02 535
6-Nov-02 686
7-Nov-02 598
8-Nov-02 703
9-Nov-02 456
10-Nov-02 478
11-Nov-02 498
12-Nov-02 456
13-Nov-02 665
14-Nov-02 800
15-Nov-02 800
16-Nov-02 792
17-Nov-02 872
18-Nov-02 685
19-Nov-02 660
20-Nov-02 621
21-Nov-02 319
22-Nov-02 347
23-Nov-02 528
24-Nov-02 690
25-Nov-02 924
26-Nov-02 892
27-Nov-02 871
28-Nov-02 1002
29-Nov-02 1109
30-Nov-02 895
1-Dec-02 895
2-Dec-02 656
3-Dec-02 559
4-Dec-02 700
5-Dec-02 823
6-Dec-02 776
7-Dec-02 554
8-Dec-02 433
9-Dec-02 459
10-Dec-02 834
11-Dec-02 1035
12-Dec-02 1157
13-Dec-02 1183
14-Dec-02 915
15-Dec-02 1161
16-Dec-02 1009
17-Dec-02 1009
18-Dec-02 631
19-Dec-02 693
20-Dec-02 307
21-Dec-02 545
22-Dec-02 713
23-Dec-02 574
24-Dec-02 844
25-Dec-02 375
26-Dec-02 713
27-Dec-02 846
28-Dec-02 839
29-Dec-02 994
30-Dec-02 822
31-Dec-02 830
1-Jan-03 842
2-Jan-03 842
3-Jan-03 1198
4-Jan-03 1245
5-Jan-03 859
6-Jan-03 826
7-Jan-03 714
8-Jan-03 474
9-Jan-03 619
10-Jan-03 784
11-Jan-03 972
12-Jan-03 1063
13-Jan-03 1108
14-Jan-03 1113
15-Jan-03 1117
16-Jan-03 1327
17-Jan-03 1155
18-Jan-03 1155
19-Jan-03 983
20-Jan-03 1000
21-Jan-03 881
22-Jan-03 1032
23-Jan-03 1025
24-Jan-03 1012
25-Jan-03 1248
26-Jan-03 1157
27-Jan-03 1216
28-Jan-03 1137
29-Jan-03 1153
30-Jan-03 1095
31-Jan-03 1046
1-Feb-03 1191
2-Feb-03 1033
3-Feb-03 1033
4-Feb-03 1117
5-Feb-03 1095
6-Feb-03 1162
7-Feb-03 1162
8-Feb-03 1071
9-Feb-03 1247
10-Feb-03 1426
11-Feb-03 980
12-Feb-03 954
13-Feb-03 665
14-Feb-03 691
15-Feb-03 721
16-Feb-03 608
17-Feb-03 571
18-Feb-03 720
19-Feb-03 778
20-Feb-03 1250
21-Feb-03 1287
22-Feb-03 1422
23-Feb-03 1372
24-Feb-03 1319
25-Feb-03 1303
26-Feb-03 1267
27-Feb-03 1026
28-Feb-03 1030
1-Mar-03 600
2-Mar-03 833
3-Mar-03 866
4-Mar-03 709
5-Mar-03 1038
6-Mar-03 770
7-Mar-03 770
8-Mar-03 1301
9-Mar-03 1280
10-Mar-03 1219
11-Mar-03 1204
12-Mar-03 1089
13-Mar-03 966
14-Mar-03 1019
15-Mar-03 986
16-Mar-03 936
17-Mar-03 876
18-Mar-03 1028
19-Mar-03 1000
20-Mar-03 1001