| Site ID: |
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205 |
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Lat. |
26.7361 |
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India |
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Bihar |
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| River: |
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Gandak |
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Long. |
84.3668 |
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| Site name: |
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Bettiah |
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Contributing
area: |
40223 |
km2 |
Ratio to Comparison
Station: |
1.73 |
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| Latest measurement: |
22-Nov-09 |
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Mean annual
runoff: |
240 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
258 |
mm |
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| Latest M/C ratio: |
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1.10 |
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Seven day
total: |
1 |
mm |
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| Estimated current discharge: |
3 |
m3/sec |
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Percent of
mean 7-day total: |
1.7 |
% |
(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: |
2855 |
m3/sec |
(from Log Pearson III
analysis) |
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| Status Codes: 1 = Low
flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood |
|
2979 |
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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| 61 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
14.0 |
20.2 |
23.6 |
2.4 |
0.9 |
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| 376 |
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2003 |
0.2 |
2.3 |
20.4 |
11.0 |
10.4 |
16.9 |
0.2 |
63.6 |
134.6 |
90.1 |
22.1 |
4.6 |
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| 132 |
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2004 |
1.1 |
5.5 |
13.2 |
10.6 |
10.9 |
4.3 |
3.9 |
7.7 |
41.6 |
29.2 |
3.1 |
1.0 |
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| 162 |
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2005 |
0.4 |
2.9 |
13.0 |
3.2 |
2.5 |
5.1 |
1.7 |
27.8 |
50.5 |
37.4 |
11.7 |
6.1 |
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| 135 |
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2006 |
3.1 |
5.9 |
9.7 |
10.4 |
6.1 |
0.2 |
0.2 |
23.9 |
39.4 |
36.0 |
0.0 |
0.0 |
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| 395 |
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2007 |
3.3 |
9.5 |
19.0 |
13.9 |
3.7 |
7.6 |
3.5 |
76.0 |
121.9 |
83.3 |
40.3 |
12.6 |
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| 258 |
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2008 |
7.6 |
10.9 |
18.9 |
16.3 |
23.3 |
10.7 |
0.5 |
40.5 |
67.1 |
49.2 |
9.5 |
3.5 |
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| 217 |
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2009 |
1.1 |
6.6 |
14.5 |
6.4 |
18.7 |
15.1 |
0.4 |
53.4 |
49.6 |
45.4 |
6.1 |
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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