Site ID: 264 Lat. -18.2650 Mozambique Sofala
River: Zambezi Long. 35.9208
Site name: Valente Contributing area: 1379771 km2 Ratio to Comparison Station: 2.57
Latest measurement: 30-Jul-10 Mean annual runoff: 7 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 6.2 mm
Latest M/C ratio: 1.16 Seven day total: 0.1 mm
Estimated current discharge: 207 m3/sec Percent of mean 7-day total: 111.4 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 1631 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1917 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
1 2002 no data no data no data no data no data no data no data 0.2 0.2 0.3 0.3 0.3
4 2003 0.6 0.3 0.5 0.2 0.1 0.1 0.0 0.2 0.4 0.4 0.4 0.3
1 2004 0.1 0.1 0.2 0.1 0.0 0.0 0.0 0.1 0.0 0.1 0.3 0.2
7 2005 0.4 0.1 0.2 0.2 0.5 0.5 0.1 0.9 0.8 1.1 0.9 0.9
6 2006 0.9 0.4 0.6 0.5 0.3 0.4 0.3 0.4 0.7 1.0 0.0 0.0
10 2007 1.4 1.8 1.1 0.4 0.5 0.3 0.4 0.6 0.7 0.8 0.9 0.8
15 2008 2.2 3.6 0.9 0.5 0.7 0.7 0.7 0.8 0.9 1.2 1.0 1.5
10 2009 1.1 0.6 0.5 0.7 0.8 0.7 0.8 0.9 1.0 1.1 0.9 0.8
6 2010 0.6 0.6 1.6 1.1 0.8 0.8 0.8 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 7 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 3
23-Jul-02 3
24-Jul-02 3
25-Jul-02 40
26-Jul-02 40
27-Jul-02 173
28-Jul-02 287
29-Jul-02 380
30-Jul-02 380
31-Jul-02 469
1-Aug-02 410
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02
10-Aug-02 125
11-Aug-02 125
12-Aug-02 77
13-Aug-02 26
14-Aug-02 3
15-Aug-02 3
16-Aug-02 3
17-Aug-02 31
18-Aug-02 81
19-Aug-02 93
20-Aug-02 39
21-Aug-02 3
22-Aug-02 110
23-Aug-02 233
24-Aug-02 158
25-Aug-02 196
26-Aug-02 142
27-Aug-02 142
28-Aug-02 475
29-Aug-02 554
30-Aug-02 492
31-Aug-02 411
1-Sep-02 336
2-Sep-02 157
3-Sep-02 166
4-Sep-02 315
5-Sep-02 350
6-Sep-02 454
7-Sep-02 232
8-Sep-02 92
9-Sep-02 199
10-Sep-02 41
11-Sep-02 3
12-Sep-02 3
13-Sep-02 3
14-Sep-02 3
15-Sep-02
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02
22-Sep-02 3
23-Sep-02 188
24-Sep-02 188
25-Sep-02 108
26-Sep-02 264
27-Sep-02 3
28-Sep-02 3
29-Sep-02 3
30-Sep-02 49
1-Oct-02 166
2-Oct-02 182
3-Oct-02 195
4-Oct-02 180
5-Oct-02 176
6-Oct-02 180
7-Oct-02 180
8-Oct-02 198
9-Oct-02 226
10-Oct-02 221
11-Oct-02 76
12-Oct-02 41
13-Oct-02 17
14-Oct-02 17
15-Oct-02 341
16-Oct-02 310
17-Oct-02 371
18-Oct-02 331
19-Oct-02 286
20-Oct-02 264
21-Oct-02 197
22-Oct-02 187
23-Oct-02 187
24-Oct-02 225
25-Oct-02 125
26-Oct-02 87
27-Oct-02 32
28-Oct-02 3
29-Oct-02 36
30-Oct-02 36
31-Oct-02 36
1-Nov-02 36
2-Nov-02 12
3-Nov-02 120
4-Nov-02 218
5-Nov-02 251
6-Nov-02 325
7-Nov-02 19
8-Nov-02 3
9-Nov-02 52
10-Nov-02 100
11-Nov-02 282
12-Nov-02 159
13-Nov-02 93
14-Nov-02 97
15-Nov-02 97
16-Nov-02 205
17-Nov-02 152
18-Nov-02 57
19-Nov-02 99
20-Nov-02 58
21-Nov-02 160
22-Nov-02 290
23-Nov-02 336
24-Nov-02 336
25-Nov-02 110
26-Nov-02 265
27-Nov-02 244
28-Nov-02 248
29-Nov-02 400
30-Nov-02 242
1-Dec-02 242
2-Dec-02 127
3-Dec-02 94
4-Dec-02 101
5-Dec-02 171
6-Dec-02 222
7-Dec-02 340
8-Dec-02 381
9-Dec-02 188
10-Dec-02 188
11-Dec-02 53
12-Dec-02 147
13-Dec-02 212
14-Dec-02 131
15-Dec-02 153
16-Dec-02 119
17-Dec-02 119
18-Dec-02 229
19-Dec-02 69
20-Dec-02 55
21-Dec-02 39
22-Dec-02 3
23-Dec-02 153
24-Dec-02 115
25-Dec-02 195
26-Dec-02 195
27-Dec-02 76
28-Dec-02 97
29-Dec-02 71
30-Dec-02 177
31-Dec-02 264
1-Jan-03 400
2-Jan-03 400
3-Jan-03 226
4-Jan-03 331
5-Jan-03 323
6-Jan-03 417
7-Jan-03 481
8-Jan-03 579
9-Jan-03 717
10-Jan-03 615
11-Jan-03 615
12-Jan-03 382
13-Jan-03 607
14-Jan-03 663
15-Jan-03 476
16-Jan-03 569
17-Jan-03 260
18-Jan-03 260
19-Jan-03 302
20-Jan-03 376
21-Jan-03 275
22-Jan-03 178
23-Jan-03 161
24-Jan-03 13
25-Jan-03 3
26-Jan-03 71
27-Jan-03 71
28-Jan-03 3
29-Jan-03 69
30-Jan-03 70
31-Jan-03 150
1-Feb-03 276
2-Feb-03 259
3-Feb-03 259
4-Feb-03 3
5-Feb-03 35
6-Feb-03 67
7-Feb-03 67
8-Feb-03 221
9-Feb-03 296
10-Feb-03 295
11-Feb-03 107
12-Feb-03 107
13-Feb-03 3
14-Feb-03 134
15-Feb-03 240
16-Feb-03 293
17-Feb-03 458
18-Feb-03 259
19-Feb-03 259
20-Feb-03 103
21-Feb-03 178
22-Feb-03 130
23-Feb-03 147
24-Feb-03 170
25-Feb-03 116
26-Feb-03 185
27-Feb-03 129
28-Feb-03 129
1-Mar-03 125
2-Mar-03 295
3-Mar-03 402
4-Mar-03 489
5-Mar-03 669
6-Mar-03 438
7-Mar-03 438
8-Mar-03 3
9-Mar-03 72
10-Mar-03 172
11-Mar-03 226
12-Mar-03 553
13-Mar-03 494
14-Mar-03 454
15-Mar-03 408
16-Mar-03 408
17-Mar-03 235
18-Mar-03 149
19-Mar-03 60
20-Mar-03 3
21-Mar-03 3
22-Mar-03 18
23-Mar-03 18
24-Mar-03 65
25-Mar-03 462
26-Mar-03 497
27-Mar-03 216
28-Mar-03 334
29-Mar-03 3
30-Mar-03 3
31-Mar-03 88
1-Apr-03 88
2-Apr-03 43
3-Apr-03 125
4-Apr-03 133
5-Apr-03 253
6-Apr-03 398
7-Apr-03 340
8-Apr-03 340
9-Apr-03 179
10-Apr-03 96