| Site ID: |
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2275 |
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Lat. |
37.8205 |
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Japan |
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0 |
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| River: |
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Agano |
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Long. |
139.1644 |
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| Site name: |
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0 |
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Contributing
area: |
7864 |
km2 |
Ratio to Comparison
Station: |
0.34 |
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| Latest measurement: |
6-Nov-09 |
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Mean annual
runoff: |
1592 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
1669 |
mm |
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| Latest M/C ratio: |
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1.21 |
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Seven day
total: |
1 |
mm |
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| Estimated current discharge: |
410 |
m3/sec |
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Percent of
mean 7-day total: |
164.6 |
% |
(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: |
2940 |
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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2909 |
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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| 409 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
68.4 |
26.8 |
92.8 |
118.4 |
102.9 |
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| 1482 |
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2003 |
122.1 |
60.3 |
42.3 |
123.3 |
553.0 |
300.5 |
34.8 |
15.9 |
9.0 |
75.5 |
21.9 |
123.1 |
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| 1205 |
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2004 |
74.3 |
112.5 |
58.9 |
111.8 |
509.0 |
189.8 |
29.5 |
14.4 |
18.4 |
19.2 |
24.8 |
42.5 |
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| 1922 |
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2005 |
65.1 |
60.2 |
206.5 |
137.0 |
506.1 |
396.7 |
47.2 |
32.1 |
75.6 |
111.4 |
131.9 |
152.2 |
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| 1598 |
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2006 |
269.5 |
122.0 |
127.6 |
134.5 |
489.4 |
223.8 |
14.9 |
29.3 |
62.8 |
124.0 |
0.0 |
0.0 |
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| 1755 |
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2007 |
180.7 |
163.6 |
157.6 |
155.1 |
387.7 |
250.4 |
24.3 |
24.8 |
79.3 |
69.9 |
117.6 |
143.8 |
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| 1669 |
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2008 |
124.2 |
138.4 |
73.8 |
105.9 |
485.4 |
249.5 |
26.1 |
22.3 |
83.1 |
89.6 |
126.8 |
144.1 |
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| 1393 |
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2009 |
166.3 |
87.8 |
84.6 |
137.9 |
423.1 |
217.8 |
22.2 |
29.5 |
67.1 |
124.7 |
32.0 |
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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