Site ID: 252 Lat. 19.3879 Thailand Phayao
River: Nam Ing Long. 100.0265
Site name: Phayo Contributing area: 2164 km2 Ratio to Comparison Station: 0.00
Latest measurement: 30-Jul-10 Mean annual runoff: 2370 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 515.8 mm
Latest M/C ratio: 1.10 Seven day total: 11.0 mm
Estimated current discharge: 3 m3/sec Percent of mean 7-day total: 16.8 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 1811 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1871 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
181 2002 no data no data no data no data no data no data no data 4.9 51.4 4.1 57.7 63.0
2923 2003 52.1 3.7 44.8 7.0 22.2 905.9 1380.4 365.1 130.5 4.1 3.3 4.1
5170 2004 8.9 7.8 27.4 321.7 1100.4 2266.8 1195.6 107.5 121.3 4.1 4.0 4.1
1790 2005 4.1 3.7 15.4 27.4 232.3 439.7 460.7 251.3 167.5 180.0 4.0 4.1
980 2006 2.8 35.6 12.0 155.6 203.3 385.2 103.7 9.9 56.5 15.1 0.0 0.0
1864 2007 4.1 17.8 28.8 205.3 583.8 668.2 322.4 4.1 17.6 4.1 4.0 3.4
1571 2008 5.6 43.6 91.4 7.8 85.0 622.2 536.3 132.7 32.0 4.1 4.0 6.9
2290 2009 20.1 96.5 8.0 19.5 237.9 1322.9 528.7 11.4 4.0 4.1 4.0 32.5
516 2010 180.2 76.4 11.4 6.1 157.9 8.3 75.3 0.3 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 2370 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-02 143
23-Jul-02 143
24-Jul-02 303
25-Jul-02 356
26-Jul-02 475
27-Jul-02 359
28-Jul-02 294
29-Jul-02 3
30-Jul-02 3
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 3
10-Aug-02 3
11-Aug-02 3
12-Aug-02 3
13-Aug-02 3
14-Aug-02 3
15-Aug-02 3
16-Aug-02 3
17-Aug-02 3
18-Aug-02 47
19-Aug-02 3
20-Aug-02 3
21-Aug-02 3
22-Aug-02 3
23-Aug-02 3
24-Aug-02 3
25-Aug-02 3
26-Aug-02 3
27-Aug-02 3
28-Aug-02 3
29-Aug-02 3
30-Aug-02 3
31-Aug-02 3
1-Sep-02 3
2-Sep-02 3
3-Sep-02 3
4-Sep-02 3
5-Sep-02 3
6-Sep-02 3
7-Sep-02 3
8-Sep-02 3
9-Sep-02 3
10-Sep-02 3
11-Sep-02 3
12-Sep-02 204
13-Sep-02 204
14-Sep-02 279
15-Sep-02
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02
22-Sep-02 271
23-Sep-02 271
24-Sep-02 3
25-Sep-02 3
26-Sep-02 3
27-Sep-02 3
28-Sep-02 3
29-Sep-02 3
30-Sep-02 3
1-Oct-02 3
2-Oct-02 3
3-Oct-02 3
4-Oct-02 3
5-Oct-02 3
6-Oct-02 3
7-Oct-02 3
8-Oct-02 3
9-Oct-02 3
10-Oct-02 3
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28-Oct-02 3
29-Oct-02 3
30-Oct-02 3
31-Oct-02 3
1-Nov-02 3
2-Nov-02 3
3-Nov-02 3
4-Nov-02 3
5-Nov-02 3
6-Nov-02 3
7-Nov-02 3
8-Nov-02 17
9-Nov-02 52
10-Nov-02 94
11-Nov-02 178
12-Nov-02 178
13-Nov-02 19
14-Nov-02 3
15-Nov-02 3
16-Nov-02 3
17-Nov-02 48
18-Nov-02 295
19-Nov-02 295
20-Nov-02 127
21-Nov-02 77
22-Nov-02 3
23-Nov-02 3
24-Nov-02 3
25-Nov-02 3
26-Nov-02 3
27-Nov-02 3
28-Nov-02 3
29-Nov-02 3
30-Nov-02 3
1-Dec-02 3
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3-Dec-02 3
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19-Dec-02 3
20-Dec-02 3
21-Dec-02 3
22-Dec-02 3
23-Dec-02 3
24-Dec-02 3
25-Dec-02 3
26-Dec-02 3
27-Dec-02 68
28-Dec-02 135
29-Dec-02 464
30-Dec-02 464
31-Dec-02 360
1-Jan-03 360
2-Jan-03 206
3-Jan-03 186
4-Jan-03 166
5-Jan-03 121
6-Jan-03 121
7-Jan-03 55
8-Jan-03 15
9-Jan-03 3
10-Jan-03 3
11-Jan-03 3
12-Jan-03 3
13-Jan-03 3
14-Jan-03 3
15-Jan-03 3
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1-Feb-03 3
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1-Mar-03 3
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19-Mar-03 3
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21-Mar-03 3
22-Mar-03 3
23-Mar-03 3
24-Mar-03 3
25-Mar-03 3
26-Mar-03 154
27-Mar-03 154
28-Mar-03 532
29-Mar-03 193
30-Mar-03 3
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1-Apr-03 3
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22-Apr-03 15
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1-May-03 3
2-May-03 3
3-May-03 3
4-May-03 29
5-May-03 46
6-May-03 30
7-May-03 30
8-May-03 3
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14-May-03 3
15-May-03 45
16-May-03 3
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