Site ID: 1583 Lat. -21.5893 Madagascar Toliara
River: Mangoky Long. 45.3938
Site name: Bemavo Contributing area: 36047 km2 Ratio to Comparison Station: 1.28
Latest measurement: 11-Jul-10 Mean annual runoff: 1555 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 1227.2 mm
Latest M/C ratio: 1.08 Seven day total: 27.9 mm
Estimated current discharge: 1553 m3/sec Percent of mean 7-day total: 107.7 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 4985 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 4898 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
562 2002 no data no data no data no data no data no data no data 62.5 81.5 111.2 141.8 165.0
1316 2003 129.9 113.5 77.0 124.6 97.2 83.5 93.7 87.8 97.6 104.6 116.0 190.7
1112 2004 142.4 132.3 78.0 52.3 59.0 73.6 69.5 80.0 98.3 114.6 105.1 107.1
1346 2005 69.0 56.0 134.8 180.3 128.3 108.6 107.1 99.3 88.2 84.7 64.4 225.4
1266 2006 166.0 185.7 209.0 157.2 134.4 114.1 96.3 93.6 64.8 44.6 0.0 0.0
1995 2007 243.2 203.0 253.4 184.0 207.3 149.7 117.2 102.7 84.9 91.5 149.9 207.9
1900 2008 217.0 210.5 214.8 179.6 164.6 132.4 122.0 102.9 77.5 114.6 158.8 205.4
1951 2009 258.9 173.3 245.2 203.5 159.8 136.2 95.0 125.8 93.5 122.5 145.4 191.9
1227 2010 229.4 211.6 254.9 178.8 141.2 154.5 56.9 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 1555 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-02 665
23-Jul-02 665
24-Jul-02 866
25-Jul-02 866
26-Jul-02 470
27-Jul-02 512
28-Jul-02 474
29-Jul-02 728
30-Jul-02 946
31-Jul-02 1137
1-Aug-02 1490
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 1005
10-Aug-02 1005
11-Aug-02 1081
12-Aug-02 1260
13-Aug-02 1486
14-Aug-02 1122
15-Aug-02 1111
16-Aug-02 930
17-Aug-02 584
18-Aug-02 1160
19-Aug-02 1073
20-Aug-02 1076
21-Aug-02 861
22-Aug-02 740
23-Aug-02 1171
24-Aug-02 1201
25-Aug-02 1871
26-Aug-02 1871
27-Aug-02 845
28-Aug-02 800
29-Aug-02 717
30-Aug-02 716
31-Aug-02 881
1-Sep-02 974
2-Sep-02 845
3-Sep-02 1364
4-Sep-02 1260
5-Sep-02 1230
6-Sep-02 1572
7-Sep-02 1509
8-Sep-02 1390
9-Sep-02 1635
10-Sep-02 1026
11-Sep-02 1026
12-Sep-02 1724
13-Sep-02 1724
14-Sep-02 2143
15-Sep-02 2143
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1780
22-Sep-02 1165
23-Sep-02 1165
24-Sep-02 1168
25-Sep-02 887
26-Sep-02 1105
27-Sep-02 1105
28-Sep-02 1032
29-Sep-02 1222
30-Sep-02 1817
1-Oct-02 1467
2-Oct-02 1467
3-Oct-02 1241
4-Oct-02 785
5-Oct-02 875
6-Oct-02 933
7-Oct-02 1018
8-Oct-02 1235
9-Oct-02 1310
10-Oct-02 1534
11-Oct-02 1804
12-Oct-02 1456
13-Oct-02 1456
14-Oct-02 694
15-Oct-02 872
16-Oct-02 1131
17-Oct-02 1240
18-Oct-02 1625
19-Oct-02 1626
20-Oct-02 1405
21-Oct-02 1492
22-Oct-02 1804
23-Oct-02 2199
24-Oct-02 1896
25-Oct-02 1938
26-Oct-02 1989
27-Oct-02 1809
28-Oct-02 2280
29-Oct-02 2280
30-Oct-02 1656
31-Oct-02 1878
1-Nov-02 2173
2-Nov-02 2121
3-Nov-02 2381
4-Nov-02 2178
5-Nov-02 1857
6-Nov-02 1637
7-Nov-02 1918
8-Nov-02 1741
9-Nov-02 1885
10-Nov-02 1999
11-Nov-02 1710
12-Nov-02 1944
13-Nov-02 2300
14-Nov-02 2300
15-Nov-02 261
16-Nov-02 591
17-Nov-02 447
18-Nov-02 748
19-Nov-02 2376
20-Nov-02 1716
21-Nov-02 1265
22-Nov-02 1878
23-Nov-02 2198
24-Nov-02 2963
25-Nov-02 2974
26-Nov-02 2931
27-Nov-02 2874
28-Nov-02 2851
29-Nov-02 2477
30-Nov-02 2477
1-Dec-02 2404
2-Dec-02 2375
3-Dec-02 2139
4-Dec-02 2026
5-Dec-02 1854
6-Dec-02 1815
7-Dec-02 1943
8-Dec-02 2604
9-Dec-02 2550
10-Dec-02 2907
11-Dec-02 2908
12-Dec-02 2859
13-Dec-02 2836
14-Dec-02 2638
15-Dec-02 2206
16-Dec-02 2206
17-Dec-02 1449
18-Dec-02 1924
19-Dec-02 1966
20-Dec-02 1895
21-Dec-02 2249
22-Dec-02 1929
23-Dec-02 1685
24-Dec-02 675
25-Dec-02 2102
26-Dec-02 2193
27-Dec-02 2342
28-Dec-02 2903
29-Dec-02 2574
30-Dec-02 2672
31-Dec-02 2031
1-Jan-03 2031
2-Jan-03 1743
3-Jan-03 1653
4-Jan-03 1440
5-Jan-03 1294
6-Jan-03 1073
7-Jan-03 998
8-Jan-03 1061
9-Jan-03 2137
10-Jan-03 2145
11-Jan-03 1842
12-Jan-03 1846
13-Jan-03 1451
14-Jan-03 952
15-Jan-03 1285
16-Jan-03 1645
17-Jan-03 1645
18-Jan-03 1911
19-Jan-03 1759
20-Jan-03 1580
21-Jan-03 1967
22-Jan-03 2215
23-Jan-03 2804
24-Jan-03 3182
25-Jan-03 2098
26-Jan-03 2024
27-Jan-03 1465
28-Jan-03 1985
29-Jan-03 2307
30-Jan-03 1366
31-Jan-03 1310
1-Feb-03 261
2-Feb-03 261
3-Feb-03 556
4-Feb-03 1056
5-Feb-03 1483
6-Feb-03 1489
7-Feb-03 1796
8-Feb-03 1187
9-Feb-03 878
10-Feb-03 999
11-Feb-03 2014
12-Feb-03 2327
13-Feb-03 2059
14-Feb-03 2163
15-Feb-03 1438
16-Feb-03 1637
17-Feb-03 1688
18-Feb-03 1688
19-Feb-03 1055
20-Feb-03 1235
21-Feb-03 3264
22-Feb-03 3047
23-Feb-03 3840
24-Feb-03 3538
25-Feb-03 1620
26-Feb-03 1417
27-Feb-03 1872
28-Feb-03 1474
1-Mar-03 1992
2-Mar-03 2024
3-Mar-03 608
4-Mar-03 990
5-Mar-03 261
6-Mar-03 261
7-Mar-03 261
8-Mar-03 812
9-Mar-03 1235
10-Mar-03 1016
11-Mar-03 1016
12-Mar-03 524
13-Mar-03 376
14-Mar-03 619
15-Mar-03 993
16-Mar-03 983
17-Mar-03 709
18-Mar-03 590
19-Mar-03 521
20-Mar-03 720
21-Mar-03 711
22-Mar-03 711
23-Mar-03 261
24-Mar-03 951
25-Mar-03 2201
26-Mar-03 2047
27-Mar-03 2786
28-Mar-03 1838
29-Mar-03 962