| Site ID: |
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2167 |
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Lat. |
17.7810 |
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Vietnam |
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Quang
Binh |
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| River: |
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Giang |
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Long. |
106.2684 |
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| Site name: |
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Tho Ngoa |
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Contributing
area: |
2282 |
km2 |
Ratio to Comparison
Station: |
0.10 |
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| Latest measurement: |
6-Nov-09 |
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Mean annual
runoff: |
5944 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
1906 |
mm |
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| Latest M/C ratio: |
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1.30 |
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Seven day
total: |
1 |
mm |
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| Estimated current discharge: |
769 |
m3/sec |
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Percent of
mean 7-day total: |
105.8 |
% |
(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: |
2878 |
m3/sec |
(from Log Pearson III
analysis) |
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| Status Codes: 1 = Low
flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood |
|
2870 |
m3/sec |
(from Gumbel Extreme Value
analysis) |
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| Comparison Station Information: |
Tokwe
Confluence D/s C/s (1495240) |
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Contributing
Area: |
7280 |
sq mi |
23237 |
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: |
Comparison station is
placeholder, only; this site is not yet calibrated to actual discharge |
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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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| 3771 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
173.1 |
520.8 |
736.7 |
972.1 |
1368.4 |
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| 8724 |
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2003 |
1407.4 |
806.2 |
522.6 |
460.8 |
456.9 |
669.4 |
164.9 |
209.4 |
279.1 |
964.6 |
782.2 |
2001.0 |
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| 11606 |
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2004 |
1397.9 |
765.4 |
691.9 |
513.6 |
604.0 |
780.3 |
456.0 |
366.7 |
781.2 |
1253.4 |
1365.5 |
2629.8 |
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| 5505 |
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2005 |
2138.6 |
1117.6 |
241.7 |
136.0 |
129.3 |
372.8 |
74.0 |
27.9 |
92.5 |
361.4 |
393.6 |
419.8 |
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| 1576 |
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2006 |
463.7 |
230.7 |
88.9 |
83.9 |
155.3 |
239.7 |
38.0 |
7.9 |
57.9 |
209.5 |
0.0 |
0.0 |
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| 2310 |
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2007 |
313.3 |
232.4 |
84.1 |
103.2 |
123.5 |
124.9 |
13.0 |
16.7 |
104.7 |
320.3 |
529.7 |
344.3 |
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| 1906 |
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2008 |
415.2 |
193.7 |
79.7 |
102.9 |
19.9 |
80.3 |
16.9 |
3.9 |
8.6 |
178.7 |
394.0 |
412.5 |
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| 1488 |
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2009 |
344.2 |
263.4 |
85.0 |
20.1 |
126.4 |
154.1 |
4.6 |
23.3 |
11.5 |
251.5 |
203.9 |
0.0 |
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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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