Site ID: 260 Lat. -16.2456 Malawi Southern
River: Shire Long. 34.9594
Site name: Chikwawa Contributing area: 144553 km2 Ratio to Comparison Station: 0.27
Latest measurement: 30-Jul-10 Mean annual runoff: 22 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 21.1 mm
Latest M/C ratio: 1.17 Seven day total: 0.8 mm
Estimated current discharge: 248 m3/sec Percent of mean 7-day total: 339.1 % (today's value compared to mean for same period, 2003-2009)
Ice-cover determination: 5 yr recurrence flood: 1616 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1452 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
0 2002 no data no data no data no data no data no data no data 0.0 0.0 0.1 0.1 0.1
17 2003 7.6 1.9 1.3 3.1 1.0 0.8 0.1 0.1 0.4 0.1 0.1 0.1
1 2004 0.3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.4
8 2005 0.7 0.1 0.6 1.2 0.2 0.1 0.0 0.1 0.1 0.4 1.0 3.3
32 2006 14.0 5.6 3.7 2.5 2.1 1.4 1.4 0.9 0.3 0.4 0.0 0.0
54 2007 16.3 13.6 7.6 2.3 2.4 1.8 1.8 1.1 0.5 0.2 1.5 4.6
18 2008 7.4 4.8 0.9 0.3 0.9 0.4 0.3 0.3 0.4 0.1 0.5 1.8
25 2009 3.5 3.1 4.6 3.3 2.6 2.6 2.0 0.6 0.1 0.1 1.2 1.6
21 2010 0.4 3.4 6.7 2.1 2.3 2.5 3.3 0.3 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 22 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 3
26-Jul-02 3
27-Jul-02 3
28-Jul-02 3
29-Jul-02 3
30-Jul-02 3
31-Jul-02 3
1-Aug-02
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 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 3
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 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 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 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
11-Oct-02 3
12-Oct-02 3
13-Oct-02 3
14-Oct-02 3
15-Oct-02 3
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17-Oct-02 3
18-Oct-02 3
19-Oct-02 3
20-Oct-02 3
21-Oct-02 3
22-Oct-02 3
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 3
5-Nov-02 3
6-Nov-02 3
7-Nov-02 3
8-Nov-02 3
9-Nov-02 3
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25-Nov-02 3
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30-Nov-02 3
1-Dec-02 3
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3-Dec-02 3
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18-Dec-02 3
19-Dec-02 3
20-Dec-02 9
21-Dec-02 3
22-Dec-02 47
23-Dec-02 3
24-Dec-02 3
25-Dec-02 3
26-Dec-02 3
27-Dec-02 3
28-Dec-02 3
29-Dec-02 3
30-Dec-02 3
31-Dec-02 3
1-Jan-03 3
2-Jan-03 3
3-Jan-03 194
4-Jan-03 134
5-Jan-03 134
6-Jan-03 203
7-Jan-03 208
8-Jan-03 491
9-Jan-03 491
10-Jan-03 556
11-Jan-03 679
12-Jan-03 485
13-Jan-03 682
14-Jan-03 763
15-Jan-03 1062
16-Jan-03 1546
17-Jan-03 916
18-Jan-03 916
19-Jan-03 274
20-Jan-03 440
21-Jan-03 674
22-Jan-03 523
23-Jan-03 512
24-Jan-03 214
25-Jan-03 214
26-Jan-03 317
27-Jan-03 62
28-Jan-03 3
29-Jan-03 3
30-Jan-03 3
31-Jan-03 19
1-Feb-03 132
2-Feb-03 191
3-Feb-03 191
4-Feb-03 3
5-Feb-03 139
6-Feb-03 211
7-Feb-03 211
8-Feb-03 422
9-Feb-03 3
10-Feb-03 3
11-Feb-03 3
12-Feb-03 3
13-Feb-03 48
14-Feb-03 3
15-Feb-03 3
16-Feb-03 133
17-Feb-03 241
18-Feb-03 386
19-Feb-03 386
20-Feb-03 36
21-Feb-03 146
22-Feb-03 176
23-Feb-03 3
24-Feb-03 3
25-Feb-03 3
26-Feb-03 3
27-Feb-03 3
28-Feb-03 44
1-Mar-03 46
2-Mar-03 81
3-Mar-03 153
4-Mar-03 91
5-Mar-03 111
6-Mar-03 139
7-Mar-03 139
8-Mar-03 3
9-Mar-03 3
10-Mar-03 3
11-Mar-03 3
12-Mar-03 366
13-Mar-03 168
14-Mar-03 168
15-Mar-03 42
16-Mar-03 88
17-Mar-03 137
18-Mar-03 58
19-Mar-03 27
20-Mar-03 3
21-Mar-03 3
22-Mar-03 3
23-Mar-03 3
24-Mar-03 74
25-Mar-03 56
26-Mar-03 14
27-Mar-03 3
28-Mar-03 3
29-Mar-03 26
30-Mar-03 26
31-Mar-03 211
1-Apr-03 211
2-Apr-03 319
3-Apr-03 529
4-Apr-03 674
5-Apr-03 595
6-Apr-03 702
7-Apr-03 135
8-Apr-03 135
9-Apr-03 84
10-Apr-03 202
11-Apr-03 380
12-Apr-03 229
13-Apr-03 189
14-Apr-03 3
15-Apr-03 3
16-Apr-03 9
17-Apr-03 3
18-Apr-03 3
19-Apr-03 3
20-Apr-03 3
21-Apr-03 3
22-Apr-03 3
23-Apr-03 174
24-Apr-03 174
25-Apr-03 221
26-Apr-03 114
27-Apr-03 3
28-Apr-03 3
29-Apr-03 3
30-Apr-03 3
1-May-03 3
2-May-03 153