| Site ID: |
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925 |
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Lat. |
45.1800 |
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USA |
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0 |
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| River: |
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Willamette |
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Long. |
-123.0161 |
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| Site name: |
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0 |
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Contributing
area: |
19710 |
km2 |
Ratio to Comparison
Station: |
0.85 |
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| Latest measurement: |
13-Nov-09 |
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Mean annual
runoff: |
659 |
mm |
(2003-2007) |
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| Hydrologic status: |
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2 |
Normal flow |
Total runoff
this year: |
528 |
mm |
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| Latest M/C ratio: |
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1.23 |
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Seven day
total: |
1 |
mm |
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| Estimated current discharge: |
512 |
m3/sec |
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Percent of
mean 7-day total: |
126.8 |
% |
(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: |
1860 |
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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1900 |
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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| 245 |
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2002 |
no data |
no data |
no data |
no data |
no data |
no data |
no data |
26.0 |
24.9 |
37.6 |
68.4 |
87.9 |
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| 796 |
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2003 |
141.7 |
125.4 |
114.4 |
60.6 |
24.4 |
23.5 |
35.8 |
31.8 |
39.8 |
41.8 |
36.8 |
120.1 |
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| 773 |
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2004 |
132.2 |
156.4 |
114.8 |
40.9 |
11.7 |
23.7 |
33.1 |
26.7 |
29.9 |
45.2 |
61.9 |
96.4 |
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| 558 |
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2005 |
92.0 |
81.7 |
50.5 |
24.0 |
22.9 |
19.5 |
4.9 |
29.7 |
27.9 |
25.4 |
79.1 |
100.1 |
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| 584 |
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2006 |
158.6 |
118.7 |
102.0 |
44.5 |
17.0 |
18.7 |
36.1 |
27.2 |
33.9 |
27.5 |
0.0 |
0.0 |
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| 586 |
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2007 |
88.5 |
72.4 |
90.5 |
44.8 |
20.6 |
13.7 |
28.7 |
16.8 |
20.3 |
50.3 |
44.1 |
95.0 |
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| 528 |
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2008 |
91.6 |
93.3 |
68.1 |
32.9 |
6.7 |
12.6 |
33.4 |
26.0 |
25.1 |
25.7 |
46.4 |
66.3 |
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| 467 |
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2009 |
94.5 |
67.8 |
58.9 |
32.5 |
30.6 |
21.1 |
37.3 |
30.6 |
34.9 |
27.3 |
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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