Site ID: 284 Lat. -16.2301 Zambia Western
River: Zambezi Long. 23.2320
Site name: Nangweshi Contributing area: 299163 km2 Ratio to Comparison Station: 0.56
Latest measurement: 29-Jul-10 Mean annual runoff: 100 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 154.8 mm
Latest M/C ratio: 1.18 Seven day total: 1.1 mm
Estimated current discharge: 298 m3/sec Percent of mean 7-day total: 284.0 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 8801 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 7870 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
4 2002 no data no data no data no data no data no data no data 0.4 0.5 1.3 0.9 1.1
72 2003 1.6 0.8 6.5 24.5 25.6 10.6 1.3 0.1 0.1 0.1 0.5 0.6
107 2004 0.3 2.9 19.8 41.7 30.2 7.9 2.1 0.7 0.2 0.3 0.3 0.6
21 2005 0.6 0.2 3.1 4.2 6.1 2.5 0.3 0.6 0.2 0.8 0.8 1.2
83 2006 0.7 2.7 8.4 31.2 26.4 7.6 2.3 1.4 0.9 1.0 0.0 0.0
149 2007 2.3 34.8 38.8 35.4 22.5 10.0 2.4 0.5 0.4 0.2 0.8 1.4
125 2008 3.9 25.8 30.5 29.9 20.8 6.6 1.7 1.1 0.5 1.1 2.0 1.3
141 2009 2.0 11.3 44.2 37.0 28.4 7.8 3.1 1.6 1.3 1.4 2.2 1.2
155 2010 1.8 11.9 44.4 39.4 37.3 13.7 6.3 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 100 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 79
23-Jul-02 79
24-Jul-02 32
25-Jul-02 106
26-Jul-02 267
27-Jul-02 206
28-Jul-02 87
29-Jul-02 75
30-Jul-02 20
31-Jul-02 3
1-Aug-02 19
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 216
10-Aug-02 216
11-Aug-02 80
12-Aug-02 101
13-Aug-02 3
14-Aug-02 3
15-Aug-02 32
16-Aug-02 3
17-Aug-02 23
18-Aug-02 3
19-Aug-02 3
20-Aug-02 62
21-Aug-02 156
22-Aug-02 14
23-Aug-02 81
24-Aug-02 93
25-Aug-02 9
26-Aug-02 171
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-02 102
3-Sep-02 198
4-Sep-02 198
5-Sep-02 60
6-Sep-02 10
7-Sep-02 3
8-Sep-02 3
9-Sep-02 3
10-Sep-02 153
11-Sep-02 276
12-Sep-02 161
13-Sep-02 161
14-Sep-02 3
15-Sep-02 3
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 3
22-Sep-02 3
23-Sep-02 3
24-Sep-02 3
25-Sep-02 3
26-Sep-02 3
27-Sep-02 3
28-Sep-02 101
29-Sep-02 99
30-Sep-02 3
1-Oct-02 3
2-Oct-02 3
3-Oct-02 377
4-Oct-02 1181
5-Oct-02 608
6-Oct-02 608
7-Oct-02 143
8-Oct-02 117
9-Oct-02 90
10-Oct-02 148
11-Oct-02 142
12-Oct-02 87
13-Oct-02 111
14-Oct-02 17
15-Oct-02 65
16-Oct-02 33
17-Oct-02 94
18-Oct-02 86
19-Oct-02 144
20-Oct-02 273
21-Oct-02 80
22-Oct-02 80
23-Oct-02 3
24-Oct-02 3
25-Oct-02 3
26-Oct-02 3
27-Oct-02 3
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 10
5-Nov-02 10
6-Nov-02 296
7-Nov-02 296
8-Nov-02 144
9-Nov-02 89
10-Nov-02 3
11-Nov-02 3
12-Nov-02 3
13-Nov-02 3
14-Nov-02 79
15-Nov-02 39
16-Nov-02 245
17-Nov-02 221
18-Nov-02 221
19-Nov-02 306
20-Nov-02 166
21-Nov-02 197
22-Nov-02 3
23-Nov-02 3
24-Nov-02 3
25-Nov-02 3
26-Nov-02 38
27-Nov-02 82
28-Nov-02 187
29-Nov-02 113
30-Nov-02 225
1-Dec-02 250
2-Dec-02 180
3-Dec-02 3
4-Dec-02 86
5-Dec-02 86
6-Dec-02 3
7-Dec-02 55
8-Dec-02 3
9-Dec-02 3
10-Dec-02 3
11-Dec-02 3
12-Dec-02 3
13-Dec-02 3
14-Dec-02 118
15-Dec-02 39
16-Dec-02 99
17-Dec-02 3
18-Dec-02 3
19-Dec-02 3
20-Dec-02 3
21-Dec-02 112
22-Dec-02 53
23-Dec-02 107
24-Dec-02 182
25-Dec-02 182
26-Dec-02 205
27-Dec-02 234
28-Dec-02 110
29-Dec-02 411
30-Dec-02 581
31-Dec-02 727
1-Jan-03 1384
2-Jan-03 125
3-Jan-03 65
4-Jan-03 67
5-Jan-03 128
6-Jan-03 128
7-Jan-03 181
8-Jan-03 246
9-Jan-03 50
10-Jan-03 50
11-Jan-03 3
12-Jan-03 3
13-Jan-03 3
14-Jan-03 3
15-Jan-03 66
16-Jan-03 220
17-Jan-03 395
18-Jan-03 199
19-Jan-03 213
20-Jan-03 92
21-Jan-03 116
22-Jan-03 160
23-Jan-03 107
24-Jan-03 132
25-Jan-03 3
26-Jan-03 3
27-Jan-03 474
28-Jan-03 303
29-Jan-03 265
30-Jan-03 265
31-Jan-03 3
1-Feb-03 3
2-Feb-03 267
3-Feb-03 462
4-Feb-03 316
5-Feb-03 191
6-Feb-03 178
7-Feb-03 73
8-Feb-03 43
9-Feb-03 60
10-Feb-03 3
11-Feb-03 3
12-Feb-03 3
13-Feb-03 31
14-Feb-03 32
15-Feb-03 108
16-Feb-03 217
17-Feb-03 30
18-Feb-03 50
19-Feb-03 3
20-Feb-03 3
21-Feb-03 3
22-Feb-03 3
23-Feb-03 71
24-Feb-03 153
25-Feb-03 247
26-Feb-03 138
27-Feb-03 138
28-Feb-03 46
1-Mar-03 214
2-Mar-03 248
3-Mar-03 241
4-Mar-03 277
5-Mar-03 299
6-Mar-03 420
7-Mar-03 649
8-Mar-03 382
9-Mar-03 212
10-Mar-03 327
11-Mar-03 327
12-Mar-03 642
13-Mar-03 857
14-Mar-03 1076
15-Mar-03 1076
16-Mar-03 731
17-Mar-03 914
18-Mar-03 672
19-Mar-03 750
20-Mar-03 882
21-Mar-03 723
22-Mar-03 1029
23-Mar-03 115
24-Mar-03 821
25-Mar-03 760
26-Mar-03 974
27-Mar-03 1153
28-Mar-03 1493
29-Mar-03 1944
30-Mar-03 1148
31-Mar-03 1148
1-Apr-03 262
2-Apr-03 749
3-Apr-03 619
4-Apr-03 688
5-Apr-03 688
6-Apr-03 634
7-Apr-03 1216
8-Apr-03 1050
9-Apr-03 1159
10-Apr-03 1166 <