Site ID: 2263 Lat. 8.1384 Thailand Nakhon Si Thammarat
River: Ban Pak Phraek Long. 100.1450
Site name: Ban Pak Phraek Contributing area: 2291 km2 Ratio to Comparison Station: 0.08
Latest measurement: 13-Jul-10 Mean annual runoff: 8915 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 1572.1 mm
Latest M/C ratio: 1.30 Seven day total: 77.7 mm
Estimated current discharge: 794 m3/sec Percent of mean 7-day total: 134.5 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 3828 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 3658 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
5466 2002 no data no data no data no data no data no data no data 835.4 715.1 860.3 1299.0 1756.1
12407 2003 1308.4 935.8 756.8 1138.3 650.3 1044.0 1268.4 639.5 1169.6 1326.8 1032.4 1136.4
15415 2004 1425.5 1141.2 1026.9 1078.0 975.4 1289.8 931.1 1098.6 1408.5 1695.2 1521.5 1823.6
8176 2005 1508.1 1249.0 795.4 162.0 146.4 495.0 510.9 149.5 394.1 963.1 882.8 919.4
4778 2006 1624.0 691.2 485.2 226.9 386.5 381.3 33.2 3.9 32.2 913.5 0.0 0.0
5100 2007 705.5 348.9 174.1 13.6 1005.6 362.0 36.5 3.9 3.8 402.9 1157.7 885.8
7645 2008 601.2 217.2 427.6 363.1 865.5 333.5 175.3 59.0 249.9 541.3 1696.0 2115.7
8882 2009 1369.5 683.7 502.4 705.0 477.0 371.9 420.5 36.4 59.0 456.8 2206.7 1593.4
1572 2010 565.7 388.8 429.1 4.7 3.8 14.3 165.7 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 8915 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-02 450
23-Jul-02 450
24-Jul-02 543
25-Jul-02 543
26-Jul-02 907
27-Jul-02 676
28-Jul-02 661
29-Jul-02 394
30-Jul-02 65
31-Jul-02 3
1-Aug-02 3
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 458
10-Aug-02 458
11-Aug-02 1459
12-Aug-02 1220
13-Aug-02 1651
14-Aug-02 1321
15-Aug-02 730
16-Aug-02 561
17-Aug-02 561
18-Aug-02 906
19-Aug-02 699
20-Aug-02 1311
21-Aug-02 991
22-Aug-02 848
23-Aug-02 1206
24-Aug-02 701
25-Aug-02 1166
26-Aug-02 1166
27-Aug-02 1058
28-Aug-02 1072
29-Aug-02 1104
30-Aug-02 823
31-Aug-02 678
1-Sep-02 422
2-Sep-02 422
3-Sep-02 596
4-Sep-02 598
5-Sep-02 910
6-Sep-02 745
7-Sep-02 785
8-Sep-02 912
9-Sep-02 617
10-Sep-02 980
11-Sep-02 980
12-Sep-02 976
13-Sep-02 976
14-Sep-02 965
15-Sep-02 965
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1259
22-Sep-02 1225
23-Sep-02 1225
24-Sep-02 840
25-Sep-02 649
26-Sep-02 139
27-Sep-02 139
28-Sep-02 626
29-Sep-02 424
30-Sep-02 585
1-Oct-02 442
2-Oct-02 104
3-Oct-02 551
4-Oct-02 551
5-Oct-02 913
6-Oct-02 670
7-Oct-02 484
8-Oct-02 237
9-Oct-02 67
10-Oct-02 75
11-Oct-02 3
12-Oct-02 1226
13-Oct-02 1226
14-Oct-02 1180
15-Oct-02 1054
16-Oct-02 560
17-Oct-02 599
18-Oct-02 739
19-Oct-02 620
20-Oct-02 620
21-Oct-02 517
22-Oct-02 513
23-Oct-02 850
24-Oct-02 894
25-Oct-02 1041
26-Oct-02 1003
27-Oct-02 692
28-Oct-02 1266
29-Oct-02 1266
30-Oct-02 1583
31-Oct-02 1260
1-Nov-02 803
2-Nov-02 823
3-Nov-02 749
4-Nov-02 10
5-Nov-02 10
6-Nov-02 226
7-Nov-02 894
8-Nov-02 907
9-Nov-02 934
10-Nov-02 815
11-Nov-02 537
12-Nov-02 1290
13-Nov-02 1411
14-Nov-02 1411
15-Nov-02 719
16-Nov-02 1029
17-Nov-02 907
18-Nov-02 1076
19-Nov-02 1629
20-Nov-02 1548
21-Nov-02 1548
22-Nov-02 1852
23-Nov-02 1377
24-Nov-02 1533
25-Nov-02 1737
26-Nov-02 1639
27-Nov-02 2058
28-Nov-02 2068
29-Nov-02 1450
30-Nov-02 1450
1-Dec-02 2253
2-Dec-02 2022
3-Dec-02 2526
4-Dec-02 2180
5-Dec-02 1550
6-Dec-02 1511
7-Dec-02 1511
8-Dec-02 1210
9-Dec-02 1392
10-Dec-02 1850
11-Dec-02 1765
12-Dec-02 2049
13-Dec-02 1730
14-Dec-02 1177
15-Dec-02 990
16-Dec-02 990
17-Dec-02 1526
18-Dec-02 1252
19-Dec-02 1319
20-Dec-02 1106
21-Dec-02 713
22-Dec-02 964
23-Dec-02 964
24-Dec-02 1963
25-Dec-02 1636
26-Dec-02 1921
27-Dec-02 1572
28-Dec-02 1223
29-Dec-02 1259
30-Dec-02 849
31-Dec-02 1587
1-Jan-03 1587
2-Jan-03 1578
3-Jan-03 1554
4-Jan-03 1337
5-Jan-03 1367
6-Jan-03 1470
7-Jan-03 1302
8-Jan-03 1302
9-Jan-03 997
10-Jan-03 1345
11-Jan-03 1685
12-Jan-03 1657
13-Jan-03 1953
14-Jan-03 1552
15-Jan-03 1231
16-Jan-03 971
17-Jan-03 971
18-Jan-03 940
19-Jan-03 796
20-Jan-03 682
21-Jan-03 615
22-Jan-03 505
23-Jan-03 325
24-Jan-03 325
25-Jan-03 621
26-Jan-03 568
27-Jan-03 1389
28-Jan-03 1204
29-Jan-03 1232
30-Jan-03 1166
31-Jan-03 460
1-Feb-03 405
2-Feb-03 405
3-Feb-03 732
4-Feb-03 646
5-Feb-03 684
6-Feb-03 750
7-Feb-03 677
8-Feb-03 748
9-Feb-03 748
10-Feb-03 854
11-Feb-03 550
12-Feb-03 1211
13-Feb-03 967
14-Feb-03 920
15-Feb-03 1486
16-Feb-03 887
17-Feb-03 2020
18-Feb-03 2020
19-Feb-03 2657
20-Feb-03 1651
21-Feb-03 1256
22-Feb-03 899
23-Feb-03 131
24-Feb-03 192
25-Feb-03 192
26-Feb-03 142
27-Feb-03 103
28-Feb-03 876
1-Mar-03 645
2-Mar-03 827
3-Mar-03 876
4-Mar-03 66
5-Mar-03 221
6-Mar-03 221
7-Mar-03 315
8-Mar-03 208
9-Mar-03 106
10-Mar-03 135
11-Mar-03 135
12-Mar-03 349
13-Mar-03 349
14-Mar-03 1141
15-Mar-03 907
16-Mar-03 1297
17-Mar-03 993
18-Mar-03 745
19-Mar-03 688
20-Mar-03 226
21-Mar-03 307
22-Mar-03 307
23-Mar-03 1551
24-Mar-03 1325
25-Mar-03 1388
26-Mar-03 793
27-Mar-03 455
28-Mar-03 690
29-Mar-03 690
30-Mar-03 1257
31-Mar-03 850
1-Apr-03 964
2-Apr-03 975
3-Apr-03 1011
4-Apr-03 1426
5-Apr-03 1043
6-Apr-03 2255
7-Apr-03 2255
8-Apr-03 1658
9-Apr-03 1253
10-Apr-03 674
11-Apr-03 633
12-Apr-03 546
13-Apr-03 441
14-Apr-03 441
15-Apr-03 1764
16-Apr-03 1354
17-Apr-03 1687