Site ID: 137 Lat. 8.9951 Colombia Santander
River: Magdalena Long. -73.9679
Site name: San Martin de Loba Contributing area: 161012 km2 Ratio to Comparison Station: 0.30
Latest measurement: 31-Jul-10 Mean annual runoff: 703 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 267.1 mm
Latest M/C ratio: 1.84 Seven day total: 12.8 mm
Estimated current discharge: 3421 m3/sec Percent of mean 7-day total: 90.7 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 8815 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 8699 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
299 2002 no data no data no data no data no data no data no data 58.3 40.4 56.2 72.8 71.0
604 2003 68.1 45.7 33.6 31.5 44.5 47.4 54.6 52.9 39.5 52.7 50.2 83.3
906 2004 91.9 70.9 46.2 32.1 59.3 81.0 88.3 94.2 56.5 63.9 95.1 126.6
710 2005 77.8 79.3 64.4 49.9 51.6 70.1 62.3 47.2 33.6 40.2 58.0 75.6
580 2006 71.9 65.0 45.1 50.2 54.3 65.9 79.2 55.5 49.1 43.5 0.0 0.0
664 2007 82.7 53.6 32.5 36.6 41.4 73.1 53.0 47.3 53.3 53.5 72.8 64.3
744 2008 84.8 54.8 60.2 60.5 47.6 60.3 45.8 57.9 42.6 55.2 63.7 111.2
716 2009 77.4 76.9 72.7 71.1 56.4 56.8 61.9 50.7 44.2 43.3 40.6 63.6
267 2010 52.3 30.9 28.3 30.2 29.6 40.7 49.8 5.3 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 703 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 2841
23-Jul-02 2841
24-Jul-02 2841
25-Jul-02 4615
26-Jul-02 4722
27-Jul-02 5200
28-Jul-02 4749
29-Jul-02 4242
30-Jul-02 3889
31-Jul-02 3661
1-Aug-02 3870
2-Aug-02 3870
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02
10-Aug-02 4748
11-Aug-02 5373
12-Aug-02 6105
13-Aug-02 5941
14-Aug-02 6359
15-Aug-02 5505
16-Aug-02 4494
17-Aug-02 5010
18-Aug-02 5010
19-Aug-02 8485
20-Aug-02 6550
21-Aug-02 6539
22-Aug-02 5157
23-Aug-02 3196
24-Aug-02 3013
25-Aug-02 3013
26-Aug-02 3351
27-Aug-02 2825
28-Aug-02 2935
29-Aug-02 2759
30-Aug-02 2473
31-Aug-02 2021
1-Sep-02 1444
2-Sep-02 1388
3-Sep-02 1388
4-Sep-02 2545
5-Sep-02 2306
6-Sep-02 2426
7-Sep-02 2689
8-Sep-02 2515
9-Sep-02 5031
10-Sep-02 5031
11-Sep-02 3946
12-Sep-02 3829
13-Sep-02 2642
14-Sep-02 2642
15-Sep-02 3211
16-Sep-02 2832
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 3227
22-Sep-02 3227
23-Sep-02 2822
24-Sep-02 2822
25-Sep-02 2699
26-Sep-02 2699
27-Sep-02 2984
28-Sep-02 3001
29-Sep-02 3007
30-Sep-02 2958
1-Oct-02 2950
2-Oct-02 2790
3-Oct-02 2686
4-Oct-02 1671
5-Oct-02 1671
6-Oct-02 2503
7-Oct-02 3237
8-Oct-02 4979
9-Oct-02 3679
10-Oct-02 3158
11-Oct-02 2996
12-Oct-02 2996
13-Oct-02 3849
14-Oct-02 2762
15-Oct-02 3018
16-Oct-02 2629
17-Oct-02 2519
18-Oct-02 3048
19-Oct-02 1969
20-Oct-02 4536
21-Oct-02 4536
22-Oct-02 6501
23-Oct-02 5009
24-Oct-02 4008
25-Oct-02 3542
26-Oct-02 2579
27-Oct-02 3397
28-Oct-02 3397
29-Oct-02 4685
30-Oct-02 3487
31-Oct-02 4026
1-Nov-02 4120
2-Nov-02 3778
3-Nov-02 4743
4-Nov-02 4174
5-Nov-02 3130
6-Nov-02 3130
7-Nov-02 2350
8-Nov-02 2887
9-Nov-02 3419
10-Nov-02 4342
11-Nov-02 4342
12-Nov-02 4673
13-Nov-02 4673
14-Nov-02 4519
15-Nov-02 4200
16-Nov-02 4879
17-Nov-02 4884
18-Nov-02 4819
19-Nov-02 4915
20-Nov-02 4367
21-Nov-02 5463
22-Nov-02 5463
23-Nov-02 6907
24-Nov-02 5400
25-Nov-02 4516
26-Nov-02 4669
27-Nov-02 3845
28-Nov-02 5820
29-Nov-02 5820
30-Nov-02 5483
1-Dec-02 4641
2-Dec-02 4576
3-Dec-02 4196
4-Dec-02 4167
5-Dec-02 4769
6-Dec-02 3951
7-Dec-02 5576
8-Dec-02 5576
9-Dec-02 6600
10-Dec-02 5424
11-Dec-02 4939
12-Dec-02 4606
13-Dec-02 3697
14-Dec-02 3507
15-Dec-02 3507
16-Dec-02 3977
17-Dec-02 2614
18-Dec-02 2525
19-Dec-02 2423
20-Dec-02 1748
21-Dec-02 2403
22-Dec-02 2209
23-Dec-02 3657
24-Dec-02 3657
25-Dec-02 5760
26-Dec-02 5573
27-Dec-02 5763
28-Dec-02 5313
29-Dec-02 4805
30-Dec-02 5069
31-Dec-02 5069
1-Jan-03 5955
2-Jan-03 5402
3-Jan-03 4899
4-Jan-03 4622
5-Jan-03 4147
6-Jan-03 3960
7-Jan-03 3816
8-Jan-03 3932
9-Jan-03 3932
10-Jan-03 5602
11-Jan-03 4876
12-Jan-03 5295
13-Jan-03 5000
14-Jan-03 4001
15-Jan-03 5249
16-Jan-03 5249
17-Jan-03 4311
18-Jan-03 4465
19-Jan-03 3502
20-Jan-03 3767
21-Jan-03 4140
22-Jan-03 3853
23-Jan-03 4253
24-Jan-03 3477
25-Jan-03 3477
26-Jan-03 2461
27-Jan-03 2539
28-Jan-03 2308
29-Jan-03 2564
30-Jan-03 2891
31-Jan-03 3026
1-Feb-03 3026
2-Feb-03 3173
3-Feb-03 3078
4-Feb-03 3198
5-Feb-03 3318
6-Feb-03 3289
7-Feb-03 3164
8-Feb-03 3092
9-Feb-03 3735
10-Feb-03 3735
11-Feb-03 5202
12-Feb-03 4253
13-Feb-03 3851
14-Feb-03 3571
15-Feb-03 2799
16-Feb-03 2807
17-Feb-03 2807
18-Feb-03 2761
19-Feb-03 2564
20-Feb-03 2811
21-Feb-03 2613
22-Feb-03 2502
23-Feb-03 2628
24-Feb-03 2285
25-Feb-03 2185
26-Feb-03 2185
27-Feb-03 2426
28-Feb-03 2114
1-Mar-03 2252
2-Mar-03 1999
3-Mar-03 1509
4-Mar-03 1704
5-Mar-03 1704
6-Mar-03 2789
7-Mar-03 2369
8-Mar-03 2055
9-Mar-03 1939
10-Mar-03 1408
11-Mar-03 1601
12-Mar-03 1897
13-Mar-03 1728
14-Mar-03 1728
15-Mar-03 1192
16-Mar-03 1322
17-Mar-03 1342
18-Mar-03 1688
19-Mar-03 2008
20-Mar-03