Site ID: 52 Lat. 15.3963 Guatemala Izabal
River: Polochic Long. -89.4892
Site name: El Estor Contributing area: 5260 km2 Ratio to Comparison Station: 0.01
Latest measurement: 23-Jul-10 Mean annual runoff: 743 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 58.6 mm
Latest M/C ratio: 1.10 Seven day total: 0.4 mm
Estimated current discharge: 3 m3/sec Percent of mean 7-day total: 7.3 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 1802 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1832 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
541 2002 no data no data no data no data no data no data no data 81.7 151.5 129.9 97.2 80.5
1510 2003 48.3 120.3 117.0 82.3 59.5 138.8 127.7 96.2 184.3 266.7 96.2 172.9
2779 2004 240.2 64.8 36.1 96.8 93.2 178.9 250.4 529.6 385.9 284.7 290.8 327.9
465 2005 106.7 191.7 13.7 1.6 1.7 90.0 23.6 22.0 8.1 2.1 1.5 1.8
121 2006 1.7 1.5 4.6 1.6 1.7 1.6 10.3 34.3 60.3 3.2 0.0 0.0
25 2007 1.7 1.5 1.7 1.6 1.7 1.6 1.7 1.7 5.3 3.0 1.6 1.6
197 2008 1.7 1.6 1.7 1.6 1.7 1.6 78.8 50.5 11.0 32.0 13.2 1.7
101 2009 5.0 1.5 7.1 4.0 16.4 1.6 43.6 6.5 10.6 1.7 1.6 1.7
59 2010 2.5 1.5 1.7 1.6 2.2 47.6 1.4 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 743 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-02 108
23-Jul-02 108
24-Jul-02 373
25-Jul-02 244
26-Jul-02 362
27-Jul-02 137
28-Jul-02 3
29-Jul-02 174
30-Jul-02 174
31-Jul-02 456
1-Aug-02 456
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 525
10-Aug-02 177
11-Aug-02 177
12-Aug-02 111
13-Aug-02 3
14-Aug-02 93
15-Aug-02 93
16-Aug-02 366
17-Aug-02 181
18-Aug-02 166
19-Aug-02 211
20-Aug-02 67
21-Aug-02 79
22-Aug-02 79
23-Aug-02 254
24-Aug-02 376
25-Aug-02 168
26-Aug-02 100
27-Aug-02 3
28-Aug-02 36
29-Aug-02 415
30-Aug-02 420
31-Aug-02 420
1-Sep-02 147
2-Sep-02 215
3-Sep-02 395
4-Sep-02 599
5-Sep-02 684
6-Sep-02 515
7-Sep-02 515
8-Sep-02 807
9-Sep-02 514
10-Sep-02 716
11-Sep-02 543
12-Sep-02 212
13-Sep-02 409
14-Sep-02 311
15-Sep-02 541
16-Sep-02 541
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02
22-Sep-02 3
23-Sep-02 3
24-Sep-02 360
25-Sep-02 234
26-Sep-02 410
27-Sep-02 260
28-Sep-02 79
29-Sep-02 166
30-Sep-02 42
1-Oct-02 382
2-Oct-02 382
3-Oct-02 481
4-Oct-02 262
5-Oct-02 128
6-Oct-02 84
7-Oct-02 3
8-Oct-02 3
9-Oct-02 3
10-Oct-02 3
11-Oct-02 3
12-Oct-02 119
13-Oct-02 204
14-Oct-02 112
15-Oct-02 104
16-Oct-02 164
17-Oct-02 3
18-Oct-02 3
19-Oct-02 814
20-Oct-02 572
21-Oct-02 868
22-Oct-02 492
23-Oct-02 3
24-Oct-02 3
25-Oct-02 3
26-Oct-02 495
27-Oct-02 280
28-Oct-02 690
29-Oct-02 485
30-Oct-02 320
31-Oct-02 438
1-Nov-02 32
2-Nov-02 138
3-Nov-02 138
4-Nov-02 257
5-Nov-02 78
6-Nov-02 71
7-Nov-02 108
8-Nov-02 3
9-Nov-02 34
10-Nov-02 34
11-Nov-02 3
12-Nov-02 3
13-Nov-02 231
14-Nov-02 143
15-Nov-02 189
16-Nov-02 315
17-Nov-02 3
18-Nov-02 3
19-Nov-02 3
20-Nov-02 3
21-Nov-02 3
22-Nov-02 3
23-Nov-02 3
24-Nov-02 3
25-Nov-02 229
26-Nov-02 229
27-Nov-02 1282
28-Nov-02 875
29-Nov-02 926
30-Nov-02 574
1-Dec-02 145
2-Dec-02 75
3-Dec-02 3
4-Dec-02 315
5-Dec-02 315
6-Dec-02 690
7-Dec-02 372
8-Dec-02 156
9-Dec-02 3
10-Dec-02 3
11-Dec-02 3
12-Dec-02 3
13-Dec-02 386
14-Dec-02 198
15-Dec-02 130
16-Dec-02 49
17-Dec-02 3
18-Dec-02 8
19-Dec-02 4
20-Dec-02 57
21-Dec-02 57
22-Dec-02 198
23-Dec-02 214
24-Dec-02 369
25-Dec-02 332
26-Dec-02 253
27-Dec-02 235
28-Dec-02 235
29-Dec-02 3
30-Dec-02 3
31-Dec-02 82
1-Jan-03 44
2-Jan-03 152
3-Jan-03 163
4-Jan-03 3
5-Jan-03 3
6-Jan-03 3
7-Jan-03 68
8-Jan-03 3
9-Jan-03 3
10-Jan-03 3
11-Jan-03 3
12-Jan-03 3
13-Jan-03 3
14-Jan-03 100
15-Jan-03 3
16-Jan-03 207
17-Jan-03 122
18-Jan-03 169
19-Jan-03 340
20-Jan-03 3
21-Jan-03 157
22-Jan-03 157
23-Jan-03 515
24-Jan-03 210
25-Jan-03 96
26-Jan-03 3
27-Jan-03 3
28-Jan-03 3
29-Jan-03 3
30-Jan-03 265
31-Jan-03 124
1-Feb-03 385
2-Feb-03 213
3-Feb-03 205
4-Feb-03 282
5-Feb-03 3
6-Feb-03 149
7-Feb-03 149
8-Feb-03 509
9-Feb-03 201
10-Feb-03 184
11-Feb-03 41
12-Feb-03 3
13-Feb-03 3
14-Feb-03 3
15-Feb-03 378
16-Feb-03 323
17-Feb-03 666
18-Feb-03 492
19-Feb-03 422
20-Feb-03 415
21-Feb-03 78
22-Feb-03 678
23-Feb-03 678
24-Feb-03 572
25-Feb-03 281
26-Feb-03 3
27-Feb-03 3
28-Feb-03 3
1-Mar-03 181
2-Mar-03 181
3-Mar-03 709
4-Mar-03 226
5-Mar-03 818
6-Mar-03 420
7-Mar-03 420
8-Mar-03 503
9-Mar-03 3
10-Mar-03 3
11-Mar-03 3
12-Mar-03 246
13-Mar-03 30
14-Mar-03 168
15-Mar-03 57
16-Mar-03 3
17-Mar-03 3
18-Mar-03 3
19-Mar-03 495
20-Mar-03 322
21-Mar-03 493
22-Mar-03 479
23-Mar-03 291
24-Mar-03 94
25-Mar-03 146
26-Mar-03 91
27-Mar-03 91
28-Mar-03 300
29-Mar-03 202
30-Mar-03 106
31-Mar-03 34
1-Apr-03 3
2-Apr-03 28
3-Apr-03 28
4-Apr-03 442
5-Apr-03 87
6-Apr-03 3
7-Apr-03 3
8-Apr-03 3
9-Apr-03 3
10-Apr-03 3
11-Apr-03 3
12-Apr-03 3
13-Apr-03 3
14-Apr-03 3
15-Apr-03 194
16-Apr-03 51
17-Apr-03 3
18-Apr-03 3
19-Apr-03 3
20-Apr-03 721
21-Apr-03 364
22-Apr-03 699
23-Apr-03 505
24-Apr-03 126
25-Apr-03 167
26-Apr-03 3
27-Apr-03 3
28-Apr-03 3
29-Apr-03 975
30-Apr-03 568
1-May-03 764
2-May-03 401
3-May-03 3
4-May-03 3
5-May-03 3
6-May-03 3
7-May-03 85
8-May-03 294
9-May-03 188
10-May-03 240
11-May-03 258
12-May-03 195
13-May-03 233
14-May-03 233
15-May-03 3
16-May-03 3
17-May-03 3
18-May-03 3
19-May-03 3
20-May-03 3
21-May-03 3
22-May-03 176
23-May-03 49
24-May-03 84
25-May-03 48
26-May-03 22
27-May-03 132
28-May-03 28
29-May-03 48
30-May-03 48
31-May-03 59
1-Jun-03 16
2-Jun-03 34
3-Jun-03 32
4-Jun-03 3
5-Jun-03 150
6-Jun-03 150