| Site ID: |
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1584 |
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Lat. |
-22.2215 |
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Madagascar |
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Fianarantsoa |
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| River: |
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Ihosy |
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Long. |
46.1142 |
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| Site name: |
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Ihosy |
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Contributing
area: |
2802 |
km2 |
Ratio to Comparison
Station: |
0.33 |
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| Latest measurement: |
15-Nov-09 |
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Mean annual
runoff: |
1483 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
1592 |
mm |
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| Latest M/C ratio: |
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1.00 |
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Seven day
total: |
1 |
mm |
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| Estimated current discharge: |
128 |
m3/sec |
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Percent of
mean 7-day total: |
93.3 |
% |
(today's value compared to
mean for same period, 2003-2007) |
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| Ice-cover determination: |
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5 yr
recurrence flood: |
246 |
m3/sec |
(from Log Pearson III
analysis) |
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| Status Codes: 1 = Low
flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood |
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252 |
m3/sec |
(from Gumbel Extreme Value
analysis) |
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| Comparison Station Information: |
Maroangaty
(1389600) |
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Contributing
Area: |
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sq mi |
8542 |
sq km |
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| (Data from this gaging station are used for the calibration to
discharge, with an adjustment for different contributing areas) |
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| Notes: |
Rating equation is based
on comparison of 4-day running means. |
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| Discharge and runoff, based on satellite remote sensing (NASA
AMSR-E data) |
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| (For U.S, sites, nearby ground station discharge may also be
shown) |
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2008-Present |
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2002-Present |
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| Annual |
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Monthly Total Runoff (mm),
computed from above satellite-based discharge data |
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| Runoff |
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| (mm) |
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Jan |
Feb |
Mar |
April |
May |
June |
July |
Aug |
Sept |
Oct |
Nov |
Dec |
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| 559 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
95.0 |
98.9 |
122.7 |
118.7 |
123.5 |
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| 1453 |
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2003 |
130.0 |
115.3 |
134.1 |
123.4 |
122.9 |
119.1 |
122.7 |
122.7 |
118.7 |
122.7 |
98.9 |
122.8 |
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| 1459 |
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2004 |
126.9 |
122.9 |
122.7 |
118.7 |
122.7 |
114.8 |
122.7 |
122.7 |
118.7 |
124.8 |
118.7 |
122.7 |
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| 1548 |
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2005 |
131.3 |
112.9 |
132.5 |
155.7 |
152.2 |
125.5 |
102.9 |
130.5 |
118.9 |
122.7 |
114.8 |
148.7 |
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| 1267 |
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2006 |
127.7 |
128.5 |
152.7 |
125.6 |
121.0 |
117.8 |
126.2 |
125.2 |
119.3 |
123.0 |
0.0 |
0.0 |
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| 1685 |
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2007 |
166.6 |
158.3 |
187.5 |
130.7 |
130.5 |
152.6 |
139.8 |
130.9 |
120.8 |
123.2 |
133.2 |
110.9 |
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| 1592 |
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2008 |
133.7 |
136.8 |
161.4 |
140.6 |
135.9 |
130.6 |
125.7 |
127.0 |
118.7 |
128.0 |
122.3 |
131.3 |
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| 1599 |
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2009 |
182.3 |
182.7 |
172.6 |
165.0 |
160.5 |
135.5 |
147.6 |
139.0 |
119.7 |
122.7 |
71.2 |
0.0 |
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Mean Annual Runoff: |
1501 |
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Standard Deviation: |
144 |
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Trend in Annual Runoff
(slope): |
32 |
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| Discharge is estimated directly via a rating equation from
the remote sensing data (M/C ratio) shown below. |
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