Site ID: 254 Lat. 16.9122 Thailand Sukhothai
River: Yom Long. 99.9359
Site name: Bang Rakam Contributing area: 18314 km2 Ratio to Comparison Station: 0.03
Latest measurement: 30-Jul-10 Mean annual runoff: 2278 mm (2003-2009)
Hydrologic status: 1 Low flow Total runoff this year (2010): 283.9 mm
Latest M/C ratio: 1.10 Seven day total: 0.1 mm
Estimated current discharge: 3 m3/sec Percent of mean 7-day total: 0.3 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 6383 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 6320 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
2016 2002 no data no data no data no data no data no data no data 76.0 196.8 534.7 695.9 512.8
1347 2003 113.9 6.6 2.9 76.5 43.3 13.6 7.5 26.9 194.5 485.4 255.8 120.5
1767 2004 6.4 0.5 55.7 113.0 25.4 14.3 21.0 174.2 281.4 598.9 375.9 100.8
2095 2005 4.3 0.4 23.1 55.4 32.6 0.7 0.5 158.8 454.8 637.1 572.4 154.9
3049 2006 59.0 0.3 28.9 118.5 53.5 540.7 480.5 551.6 532.4 683.2 0.0 0.0
2669 2007 16.5 0.4 71.1 183.7 141.0 148.3 136.6 169.4 451.4 653.7 536.6 160.5
2678 2008 25.4 3.1 70.4 74.7 18.5 38.6 44.7 314.9 480.6 549.0 664.9 393.7
2342 2009 80.1 1.6 3.6 167.5 61.7 17.9 92.2 228.0 330.4 594.3 535.4 229.5
284 2010 27.5 6.1 138.4 109.7 0.5 1.2 0.5 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 2278 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-02 880
23-Jul-02 880
24-Jul-02 979
25-Jul-02 989
26-Jul-02 1138
27-Jul-02 938
28-Jul-02 696
29-Jul-02 911
30-Jul-02 1002
31-Jul-02 1649
1-Aug-02 1649
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 1386
10-Aug-02 1194
11-Aug-02 1118
12-Aug-02 967
13-Aug-02 852
14-Aug-02 471
15-Aug-02 319
16-Aug-02 502
17-Aug-02 569
18-Aug-02 863
19-Aug-02 774
20-Aug-02 717
21-Aug-02 529
22-Aug-02 348
23-Aug-02 3
24-Aug-02 3
25-Aug-02 3
26-Aug-02 96
27-Aug-02 664
28-Aug-02 694
29-Aug-02 939
30-Aug-02 797
31-Aug-02 658
1-Sep-02 408
2-Sep-02 332
3-Sep-02 3
4-Sep-02 3
5-Sep-02 3
6-Sep-02 186
7-Sep-02 673
8-Sep-02 1149
9-Sep-02 1149
10-Sep-02 600
11-Sep-02 776
12-Sep-02 1412
13-Sep-02 1412
14-Sep-02 2262
15-Sep-02
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02
22-Sep-02 3850
23-Sep-02 3850
24-Sep-02 3297
25-Sep-02 3297
26-Sep-02 2690
27-Sep-02 2975
28-Sep-02 3686
29-Sep-02 3651
30-Sep-02 4052
1-Oct-02 3399
2-Oct-02 2644
3-Oct-02 3276
4-Oct-02 3598
5-Oct-02 4000
6-Oct-02 3793
7-Oct-02 3393
8-Oct-02 3342
9-Oct-02 3639
10-Oct-02 4046
11-Oct-02 4046
12-Oct-02 4102
13-Oct-02 4242
14-Oct-02 4372
15-Oct-02 4915
16-Oct-02 5444
17-Oct-02 3508
18-Oct-02 3508
19-Oct-02 1813
20-Oct-02 2800
21-Oct-02 4074
22-Oct-02 4321
23-Oct-02 5115
24-Oct-02 4432
25-Oct-02 4083
26-Oct-02 3716
27-Oct-02 3716
28-Oct-02 3135
29-Oct-02 2055
30-Oct-02 2200
31-Oct-02 2603
1-Nov-02 2668
2-Nov-02 4391
3-Nov-02 4286
4-Nov-02 4865
5-Nov-02 5040
6-Nov-02 5127
7-Nov-02 5048
8-Nov-02 5031
9-Nov-02 5007
10-Nov-02 5053
11-Nov-02 5525
12-Nov-02 5525
13-Nov-02 5347
14-Nov-02 5465
15-Nov-02 5970
16-Nov-02 5587
17-Nov-02 5848
18-Nov-02 5041
19-Nov-02 4006
20-Nov-02 4294
21-Nov-02 4854
22-Nov-02 6016
23-Nov-02 5724
24-Nov-02 6010
25-Nov-02 5723
26-Nov-02 5020
27-Nov-02 3437
28-Nov-02 3437
29-Nov-02 3851
30-Nov-02 4299
1-Dec-02 5975
2-Dec-02 5510
3-Dec-02 5412
4-Dec-02 4986
5-Dec-02 4072
6-Dec-02 4472
7-Dec-02 4581
8-Dec-02 5043
9-Dec-02 4563
10-Dec-02 4421
11-Dec-02 4057
12-Dec-02 3443
13-Dec-02 3388
14-Dec-02 3388
15-Dec-02 2726
16-Dec-02 3013
17-Dec-02 3235
18-Dec-02 3239
19-Dec-02 3581
20-Dec-02 3209
21-Dec-02 2991
22-Dec-02 2405
23-Dec-02 2522
24-Dec-02 2587
25-Dec-02 2559
26-Dec-02 2725
27-Dec-02 2381
28-Dec-02 2099
29-Dec-02 2080
30-Dec-02 2080
31-Dec-02 1944
1-Jan-03 1944
2-Jan-03 1160
3-Jan-03 1268
4-Jan-03 1249
5-Jan-03 1229
6-Jan-03 1311
7-Jan-03 847
8-Jan-03 1135
9-Jan-03 1127
10-Jan-03 1278
11-Jan-03 1600
12-Jan-03 1290
13-Jan-03 1276
14-Jan-03 801
15-Jan-03 801
16-Jan-03 616
17-Jan-03 706
18-Jan-03 646
19-Jan-03 565
20-Jan-03 585
21-Jan-03 435
22-Jan-03 412
23-Jan-03 223
24-Jan-03 341
25-Jan-03 267
26-Jan-03 264
27-Jan-03 362
28-Jan-03 206
29-Jan-03 185
30-Jan-03 3
31-Jan-03 3
1-Feb-03 3
2-Feb-03 117
3-Feb-03 152
4-Feb-03 147
5-Feb-03 161
6-Feb-03 122
7-Feb-03 180
8-Feb-03 62
9-Feb-03 155
10-Feb-03 76
11-Feb-03 55
12-Feb-03 116
13-Feb-03 3
14-Feb-03 3
15-Feb-03 3
16-Feb-03 3
17-Feb-03 3
18-Feb-03 3
19-Feb-03 3
20-Feb-03 3
21-Feb-03 3
22-Feb-03 3
23-Feb-03 3
24-Feb-03 3
25-Feb-03 3
26-Feb-03 3
27-Feb-03 3
28-Feb-03 3
1-Mar-03 3
2-Mar-03 3
3-Mar-03 3
4-Mar-03 3
5-Mar-03 3
6-Mar-03 3
7-Mar-03 3
8-Mar-03 3
9-Mar-03 3
10-Mar-03 3
11-Mar-03 3
12-Mar-03 98
13-Mar-03 15
14-Mar-03 3
15-Mar-03 3
16-Mar-03 3
17-Mar-03 3
18-Mar-03 3
19-Mar-03 3
20-Mar-03 3
21-Mar-03 3
22-Mar-03 3
23-Mar-03 3
24-Mar-03 3
25-Mar-03 44
26-Mar-03 58
27-Mar-03 51
28-Mar-03 66
29-Mar-03 84
30-Mar-03 68
31-Mar-03 63
1-Apr-03 72
2-Apr-03 57
3-Apr