| Site ID: |
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2280 |
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Lat. |
36.1646 |
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Japan |
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0 |
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| River: |
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Tone |
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Long. |
139.6793 |
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| Site name: |
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0 |
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Contributing
area: |
6379 |
km2 |
Ratio to Comparison
Station: |
0.27 |
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| Latest measurement: |
6-Nov-09 |
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Mean annual
runoff: |
4328 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
6040 |
mm |
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| Latest M/C ratio: |
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1.42 |
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Seven day
total: |
1 |
mm |
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| Estimated current discharge: |
1304 |
m3/sec |
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Percent of
mean 7-day total: |
124.2 |
% |
(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: |
4271 |
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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4123 |
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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| 855 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
133.2 |
195.3 |
237.0 |
106.6 |
183.4 |
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| 2934 |
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2003 |
152.0 |
150.9 |
235.3 |
391.0 |
897.2 |
322.6 |
122.1 |
134.8 |
135.3 |
143.2 |
133.0 |
116.4 |
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| 2340 |
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2004 |
73.8 |
94.2 |
165.8 |
376.5 |
728.7 |
264.0 |
151.2 |
72.1 |
95.3 |
189.7 |
103.9 |
24.3 |
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| 5051 |
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2005 |
85.1 |
48.5 |
287.2 |
562.7 |
1412.5 |
476.5 |
176.6 |
293.3 |
407.8 |
378.9 |
462.3 |
459.5 |
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| 5038 |
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2006 |
360.1 |
335.1 |
405.0 |
506.9 |
1245.0 |
710.1 |
292.3 |
322.9 |
391.9 |
469.0 |
0.0 |
0.0 |
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| 6275 |
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2007 |
429.6 |
363.8 |
369.9 |
501.0 |
1463.3 |
719.1 |
333.4 |
383.7 |
424.9 |
453.5 |
443.5 |
389.8 |
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| 6040 |
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2008 |
342.0 |
321.9 |
383.5 |
701.8 |
1160.2 |
662.9 |
328.3 |
351.0 |
387.2 |
517.9 |
423.1 |
460.2 |
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| 5293 |
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2009 |
341.4 |
385.6 |
472.4 |
626.5 |
1322.9 |
486.9 |
288.8 |
363.5 |
414.0 |
439.9 |
150.7 |
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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