| Site ID: |
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1273 |
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Lat. |
-18.4262 |
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Botswana |
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Ngamiland |
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| River: |
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Okavango |
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Long. |
21.9388 |
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| Site name: |
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Shakawe |
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Contributing
area: |
245680 |
km2 |
Ratio to Comparison
Station: |
1.00 |
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| Latest measurement: |
15-Nov-09 |
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Mean annual
runoff: |
58 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
60 |
mm |
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| Latest M/C ratio: |
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1.11 |
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Seven day
total: |
1 |
mm |
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| Estimated current discharge: |
417 |
m3/sec |
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Percent of
mean 7-day total: |
106.4 |
% |
(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: |
758 |
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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756 |
m3/sec |
(from Gumbel Extreme Value
analysis) |
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| Comparison Station Information: |
Mohembo |
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Contributing
Area: |
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sq mi |
245680 |
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 March, 2009 daily data only. |
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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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| 19 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
3.6 |
3.5 |
4.1 |
3.9 |
4.3 |
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| 55 |
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2003 |
4.6 |
4.9 |
6.4 |
5.1 |
4.8 |
4.6 |
4.4 |
4.2 |
4.0 |
4.1 |
3.3 |
4.3 |
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| 64 |
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2004 |
6.0 |
6.8 |
6.7 |
6.1 |
6.0 |
5.2 |
5.1 |
4.8 |
4.5 |
4.5 |
4.2 |
4.4 |
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| 56 |
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2005 |
4.6 |
4.8 |
6.1 |
6.3 |
6.5 |
5.3 |
0.5 |
4.9 |
4.3 |
4.2 |
4.1 |
4.9 |
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| 51 |
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2006 |
4.8 |
4.6 |
5.1 |
6.2 |
6.3 |
5.2 |
4.9 |
4.8 |
4.4 |
4.5 |
0.0 |
0.0 |
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| 62 |
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2007 |
5.8 |
5.2 |
6.0 |
7.0 |
5.8 |
5.2 |
4.9 |
4.9 |
4.6 |
4.5 |
4.3 |
4.1 |
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| 60 |
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2008 |
4.5 |
5.0 |
5.4 |
5.9 |
5.9 |
4.9 |
5.2 |
4.9 |
4.6 |
4.5 |
4.2 |
4.8 |
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| 60 |
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2009 |
5.8 |
4.8 |
7.1 |
7.2 |
6.5 |
5.6 |
5.5 |
5.4 |
4.9 |
4.8 |
2.6 |
0.0 |
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Mean Annual Runoff: |
58 |
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Standard Deviation: |
5 |
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Trend in Annual Runoff
(slope): |
0.34 |
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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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