Site ID: 1590 Lat. -21.2329 Madagascar Fianarantsoa
River: Mananjary Long. 48.1796
Site name: Mananjary Contributing area: 6934 km2 Ratio to Comparison Station: 0.25
Latest measurement: 11-Jul-10 Mean annual runoff: 374 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 176.4 mm
Latest M/C ratio: 1.00 Seven day total: 5.5 mm
Estimated current discharge: 67 m3/sec Percent of mean 7-day total: 80.3 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 237 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 237 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Boluo (2186950)           Contributing Area:   sq mi 28239 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes: Final calibration to discharge 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
183 2002 no data no data no data no data no data no data no data 28.1 33.6 44.3 34.6 42.2
497 2003 41.0 45.1 49.0 39.9 44.0 38.2 40.5 42.3 40.6 44.5 37.5 34.5
599 2004 38.0 51.3 74.5 48.7 52.4 41.5 56.7 58.3 47.1 42.6 43.5 44.6
387 2005 51.2 49.3 35.5 22.1 25.2 36.9 40.9 24.1 25.5 28.1 21.3 26.4
236 2006 22.9 21.8 20.2 23.1 21.0 20.2 25.4 25.9 26.0 29.7 0.0 0.0
306 2007 28.7 22.9 26.6 26.0 22.7 24.8 26.8 27.6 28.2 24.2 24.9 22.7
302 2008 31.2 25.7 27.3 23.7 25.3 23.1 27.4 27.0 26.5 23.9 21.9 18.6
294 2009 28.2 24.6 25.5 22.6 25.0 23.4 27.0 26.7 27.4 25.3 21.3 17.3
176 2010 26.5 23.8 36.7 28.5 23.9 25.5 11.5 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 374 Standard Deviation: 6.4
Trend in Annual Runoff (slope):  -73
Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.
Green line records upwelling microwave emission from within 5 km radius of a calbration land target. 
Explanation:   Blue line is emission from within 5 km radius of the measurement target centered over the river.
Brown line is their ratio (M/C; "HR" in Brakenridge et al 2007; 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 using available ground-based discharge information.
GoogleEarth View of Measurement Site
Return
Estimated
Disharge
Data
Date m3/sec
22-Jul-02 117
23-Jul-02 117
24-Jul-02 132
25-Jul-02 107
26-Jul-02 103
27-Jul-02 103
28-Jul-02 129
29-Jul-02 123
30-Jul-02 148
31-Jul-02 148
1-Aug-02 112
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 76
10-Aug-02 76
11-Aug-02 75
12-Aug-02 75
13-Aug-02 108
14-Aug-02 101
15-Aug-02 137
16-Aug-02 128
17-Aug-02 120
18-Aug-02 125
19-Aug-02 104
20-Aug-02 77
21-Aug-02 73
22-Aug-02 105
23-Aug-02 99
24-Aug-02 121
25-Aug-02 106
26-Aug-02 50
27-Aug-02 52
28-Aug-02 52
29-Aug-02 98
30-Aug-02 83
31-Aug-02 103
1-Sep-02 105
2-Sep-02 102
3-Sep-02 115
4-Sep-02 107
5-Sep-02 115
6-Sep-02 109
7-Sep-02 147
8-Sep-02 133
9-Sep-02 134
10-Sep-02 129
11-Sep-02 83
12-Sep-02 75
13-Sep-02 75
14-Sep-02 73
15-Sep-02 73
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 88
22-Sep-02 93
23-Sep-02 113
24-Sep-02 118
25-Sep-02 128
26-Sep-02 133
27-Sep-02 122
28-Sep-02 113
29-Sep-02 113
30-Sep-02 99
1-Oct-02 103
2-Oct-02 128
3-Oct-02 112
4-Oct-02 117
5-Oct-02 119
6-Oct-02 88
7-Oct-02 94
8-Oct-02 96
9-Oct-02 127
10-Oct-02 121
11-Oct-02 137
12-Oct-02 133
13-Oct-02 94
14-Oct-02 92
15-Oct-02 92
16-Oct-02 86
17-Oct-02 90
18-Oct-02 134
19-Oct-02 118
20-Oct-02 133
21-Oct-02 138
22-Oct-02 79
23-Oct-02 112
24-Oct-02 109
25-Oct-02 179
26-Oct-02 149
27-Oct-02 153
28-Oct-02 149
29-Oct-02 77
30-Oct-02 99
31-Oct-02 99
1-Nov-02 135
2-Nov-02 107
3-Nov-02 124
4-Nov-02 121
5-Nov-02 106
6-Nov-02 116
7-Nov-02 96
8-Nov-02 70
9-Nov-02 83
10-Nov-02 96
11-Nov-02 92
12-Nov-02 104
13-Nov-02 84
14-Nov-02 65
15-Nov-02 68
16-Nov-02 68
17-Nov-02 87
18-Nov-02 85
19-Nov-02 108
20-Nov-02 101
21-Nov-02 99
22-Nov-02 83
23-Nov-02 70
24-Nov-02 84
25-Nov-02 93
26-Nov-02 108
27-Nov-02 100
28-Nov-02 95
29-Nov-02 72
30-Nov-02 61
1-Dec-02 86
2-Dec-02 86
3-Dec-02 120
4-Dec-02 120
5-Dec-02 144
6-Dec-02 127
7-Dec-02 135
8-Dec-02 129
9-Dec-02 94
10-Dec-02 90
11-Dec-02 82
12-Dec-02 125
13-Dec-02 129
14-Dec-02 148
15-Dec-02 154
16-Dec-02 110
17-Dec-02 70
18-Dec-02 70
19-Dec-02 73
20-Dec-02 96
21-Dec-02 138
22-Dec-02 138
23-Dec-02 166
24-Dec-02 141
25-Dec-02 87
26-Dec-02 102
27-Dec-02 95
28-Dec-02 105
29-Dec-02 84
30-Dec-02 74
31-Dec-02 69
1-Jan-03 45
2-Jan-03 62
3-Jan-03 62
4-Jan-03 70
5-Jan-03 91
6-Jan-03 109
7-Jan-03 116
8-Jan-03 128
9-Jan-03 125
10-Jan-03 130
11-Jan-03 122
12-Jan-03 104
13-Jan-03 119
14-Jan-03 129
15-Jan-03 134
16-Jan-03 128
17-Jan-03 104
18-Jan-03 75
19-Jan-03 75
20-Jan-03 100
21-Jan-03 107
22-Jan-03 110
23-Jan-03 106
24-Jan-03 107
25-Jan-03 97
26-Jan-03 92
27-Jan-03 119
28-Jan-03 117
29-Jan-03 139
30-Jan-03 136
31-Jan-03 132
1-Feb-03 144
2-Feb-03 136
3-Feb-03 152
4-Feb-03 152
5-Feb-03 150
6-Feb-03 125
7-Feb-03 109
8-Feb-03 99
9-Feb-03 77
10-Feb-03 83
11-Feb-03 83
12-Feb-03 134
13-Feb-03 146
14-Feb-03 195
15-Feb-03 165
16-Feb-03 161
17-Feb-03 134
18-Feb-03 84
19-Feb-03 140
20-Feb-03 140
21-Feb-03 184
22-Feb-03 170
23-Feb-03 100
24-Feb-03 102
25-Feb-03 78
26-Feb-03 83
27-Feb-03 136
28-Feb-03 156
1-Mar-03 134
2-Mar-03 174
3-Mar-03 147
4-Mar-03 145
5-Mar-03 161
6-Mar-03 103
7-Mar-03 138
8-Mar-03 138
9-Mar-03 123
10-Mar-03 112
11-Mar-03 187
12-Mar-03 164
13-Mar-03 177
14-Mar-03 169
15-Mar-03 88
16-Mar-03 80
17-Mar-03 86
18-Mar-03 115
19-Mar-03 107
20-Mar-03 115
21-Mar-03 105
22-Mar-03 74
23-Mar-03 100
24-Mar-03 100
25-Mar-03 109
26-Mar-03 88
27-Mar-03