Site ID: 245 Lat. 17.6717 Thailand Nakhon Phanom
River: Nam Songkhram Long. 104.2160
Site name: Ban Chai Buri Contributing area: 11910 km2 Ratio to Comparison Station: 0.02
Latest measurement: 29-Jul-10 Mean annual runoff: 1074 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 157.6 mm
Latest M/C ratio: 1.10 Seven day total: 0.2 mm
Estimated current discharge: 3 m3/sec Percent of mean 7-day total: 2.0 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 3522 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 3511 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
813 2002 no data no data no data no data no data no data no data 286.8 269.8 130.8 71.5 53.8
323 2003 32.7 9.4 3.4 9.9 22.4 15.1 0.7 10.7 75.0 66.2 35.8 42.1
658 2004 32.0 13.7 15.9 13.2 56.8 25.4 0.7 8.5 233.9 136.4 66.2 55.6
1578 2005 32.9 17.9 17.4 24.0 20.8 0.7 7.4 146.2 508.3 506.9 157.7 137.9
885 2006 82.5 52.7 59.6 3.5 4.8 19.6 0.8 98.2 327.8 235.5 0.0 0.0
1146 2007 98.5 43.9 19.0 12.3 22.1 19.3 2.0 67.7 288.3 284.5 154.0 134.0
1829 2008 112.3 55.2 34.1 10.4 0.7 0.7 83.8 494.6 381.1 306.9 178.6 170.5
1096 2009 106.7 57.2 28.1 22.0 28.9 0.7 1.1 164.8 155.2 229.0 129.9 171.8
158 2010 75.1 43.0 19.7 7.9 7.6 3.5 0.7 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 1074 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-02 740
23-Jul-02 740
24-Jul-02 743
25-Jul-02 743
26-Jul-02 938
27-Jul-02 823
28-Jul-02 552
29-Jul-02 460
30-Jul-02 373
31-Jul-02 252
1-Aug-02 175
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 2754
10-Aug-02 2754
11-Aug-02 1832
12-Aug-02 2305
13-Aug-02 2098
14-Aug-02 1902
15-Aug-02 2232
16-Aug-02 1611
17-Aug-02 1352
18-Aug-02 1865
19-Aug-02 1865
20-Aug-02 2217
21-Aug-02 1493
22-Aug-02 1079
23-Aug-02 1352
24-Aug-02 993
25-Aug-02 1527
26-Aug-02 1527
27-Aug-02 1272
28-Aug-02 1210
29-Aug-02 1415
30-Aug-02 1359
31-Aug-02 1347
1-Sep-02 1795
2-Sep-02 1807
3-Sep-02 1625
4-Sep-02 1625
5-Sep-02 803
6-Sep-02 1223
7-Sep-02 1402
8-Sep-02 1234
9-Sep-02 1529
10-Sep-02 1054
11-Sep-02 1054
12-Sep-02 1309
13-Sep-02 1309
14-Sep-02 1447
15-Sep-02 1447
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1177
22-Sep-02 1308
23-Sep-02 1308
24-Sep-02 1644
25-Sep-02 1877
26-Sep-02 2492
27-Sep-02 2492
28-Sep-02 1963
29-Sep-02 1327
30-Sep-02 945
1-Oct-02 920
2-Oct-02 797
3-Oct-02 924
4-Oct-02 717
5-Oct-02 885
6-Oct-02 885
7-Oct-02 893
8-Oct-02 748
9-Oct-02 558
10-Oct-02 667
11-Oct-02 687
12-Oct-02 624
13-Oct-02 624
14-Oct-02 499
15-Oct-02 483
16-Oct-02 567
17-Oct-02 560
18-Oct-02 534
19-Oct-02 632
20-Oct-02 637
21-Oct-02 560
22-Oct-02 560
23-Oct-02 314
24-Oct-02 323
25-Oct-02 300
26-Oct-02 367
27-Oct-02 424
28-Oct-02 361
29-Oct-02 361
30-Oct-02 254
31-Oct-02 360
1-Nov-02 421
2-Nov-02 379
3-Nov-02 409
4-Nov-02 422
5-Nov-02 432
6-Nov-02 471
7-Nov-02 471
8-Nov-02 323
9-Nov-02 429
10-Nov-02 472
11-Nov-02 553
12-Nov-02 680
13-Nov-02 382
14-Nov-02 382
15-Nov-02 157
16-Nov-02 180
17-Nov-02 263
18-Nov-02 285
19-Nov-02 285
20-Nov-02 280
21-Nov-02 281
22-Nov-02 212
23-Nov-02 212
24-Nov-02 263
25-Nov-02 269
26-Nov-02 301
27-Nov-02 215
28-Nov-02 165
29-Nov-02 130
30-Nov-02 130
1-Dec-02 175
2-Dec-02 300
3-Dec-02 407
4-Dec-02 346
5-Dec-02 418
6-Dec-02 336
7-Dec-02 240
8-Dec-02 188
9-Dec-02 188
10-Dec-02 217
11-Dec-02 208
12-Dec-02 278
13-Dec-02 301
14-Dec-02 268
15-Dec-02 275
16-Dec-02 275
17-Dec-02 225
18-Dec-02 326
19-Dec-02 318
20-Dec-02 281
21-Dec-02 293
22-Dec-02 92
23-Dec-02 52
24-Dec-02 96
25-Dec-02 96
26-Dec-02 208
27-Dec-02 286
28-Dec-02 302
29-Dec-02 189
30-Dec-02 204
31-Dec-02 29
1-Jan-03 29
2-Jan-03 111
3-Jan-03 207
4-Jan-03 260
5-Jan-03 207
6-Jan-03 226
7-Jan-03 163
8-Jan-03 132
9-Jan-03 126
10-Jan-03 126
11-Jan-03 142
12-Jan-03 158
13-Jan-03 212
14-Jan-03 230
15-Jan-03 227
16-Jan-03 195
17-Jan-03 195
18-Jan-03 94
19-Jan-03 214
20-Jan-03 253
21-Jan-03 189
22-Jan-03 231
23-Jan-03 24
24-Jan-03 3
25-Jan-03 3
26-Jan-03 3
27-Jan-03 3
28-Jan-03 84
29-Jan-03 177
30-Jan-03 129
31-Jan-03 148
1-Feb-03 3
2-Feb-03 3
3-Feb-03 60
4-Feb-03 90
5-Feb-03 151
6-Feb-03 108
7-Feb-03 83
8-Feb-03 57
9-Feb-03 27
10-Feb-03 58
11-Feb-03 58
12-Feb-03 27
13-Feb-03 84
14-Feb-03 103
15-Feb-03 38
16-Feb-03 55
17-Feb-03 15
18-Feb-03 15
19-Feb-03 24
20-Feb-03 34
21-Feb-03 3
22-Feb-03 5
23-Feb-03 32
24-Feb-03 46
25-Feb-03 102
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-03 113
10-Mar-03 43
11-Mar-03 43
12-Mar-03 3
13-Mar-03 3
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 3
26-Mar-03 3
27-Mar-03 3
28-Mar-03 3
29-Mar-03 3
30-Mar-03 94
31-Mar-03 94
1-Apr-03 116
2-Apr-03 60
3-Apr-03 3
4-Apr-03 3
5-Apr-03 3
6-Apr-03 3
7-Apr-03 3
8-Apr-03 35
9-Apr-03 76
10-Apr-03 69
11-Apr-03 115
12-Apr-03 153
13-Apr-03 124
14-Apr-03 162
15-Apr-03 53
16-Apr-03 53
17-Apr-03 41