Site ID: 925 Lat. 45.1800 USA 0
River: Willamette Long. -123.0161
Site name: 0 Contributing area: 19710 km2 Ratio to Comparison Station: 0.70
Latest measurement: 20-Jul-10 Mean annual runoff: 625 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 381.3 mm
Latest M/C ratio: 1.17 Seven day total: 8.3 mm
Estimated current discharge: 254 m3/sec Percent of mean 7-day total: 138.1 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 1810 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1858 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Boluo (2186950)           Contributing Area:   sq mi 28239 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes: Final calibration to discharge has not yet been accomplished.
Discharge and runoff, based on satellite remote sensing (NASA AMSR-E data)
(For U.S, sites, nearby ground station discharge may also be shown)
Annual  Monthly Total Runoff (mm), computed from above satellite-based discharge data
Runoff
(mm) Jan Feb Mar April May June July Aug Sept Oct Nov Dec
245 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
796 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
773 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
558 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
584 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
586 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
528 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
549 2009 94.5 67.8 58.9 32.5 30.6 21.1 37.3 30.6 34.9 27.3 65.4 47.8
381 2010 106.8 88.8 86.2 53.6 10.6 14.8 20.5 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 625 Standard Deviation: 6.4
Trend in Annual Runoff (slope):  -73
Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.
Green line records upwelling microwave emission from within 5 km radius of a calbration land target. 
Explanation:   Blue line is emission from within 5 km radius of the measurement target centered over the river.
Brown line is their ratio (M/C; "HR" in Brakenridge et al 2007; scale on right) and is used to estimate river discharge via a rating equation.
Rating equations are being developed and applied on an individual basis using available ground-based discharge information.
GoogleEarth View of Measurement Site
Return
Estimated
Disharge
Data
Date m3/sec
22-Jul-02 186
23-Jul-02 186
24-Jul-02 282
25-Jul-02 315
26-Jul-02 232
27-Jul-02 115
28-Jul-02 33
29-Jul-02 79
30-Jul-02 88
31-Jul-02 130
1-Aug-02 153
2-Aug-02 85
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 300
10-Aug-02 300
11-Aug-02 269
12-Aug-02 242
13-Aug-02 188
14-Aug-02 270
15-Aug-02 333
16-Aug-02 393
17-Aug-02 487
18-Aug-02 450
19-Aug-02 314
20-Aug-02 263
21-Aug-02 206
22-Aug-02 153
23-Aug-02 126
24-Aug-02 136
25-Aug-02 183
26-Aug-02 175
27-Aug-02 184
28-Aug-02 129
29-Aug-02 158
30-Aug-02 205
31-Aug-02 236
1-Sep-02 246
2-Sep-02 221
3-Sep-02 170
4-Sep-02 126
5-Sep-02 83
6-Sep-02 83
7-Sep-02 53
8-Sep-02 65
9-Sep-02 88
10-Sep-02 118
11-Sep-02 139
12-Sep-02 142
13-Sep-02 226
14-Sep-02 233
15-Sep-02 233
16-Sep-02 400
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 628
22-Sep-02 407
23-Sep-02 331
24-Sep-02 329
25-Sep-02 287
26-Sep-02 311
27-Sep-02 356
28-Sep-02 230
29-Sep-02 167
30-Sep-02 15
1-Oct-02 95
2-Oct-02 223
3-Oct-02 265
4-Oct-02 400
5-Oct-02 492
6-Oct-02 416
7-Oct-02 396
8-Oct-02 447
9-Oct-02 340
10-Oct-02 271
11-Oct-02 198
12-Oct-02 132
13-Oct-02 109
14-Oct-02 171
15-Oct-02 229
16-Oct-02 287
17-Oct-02 307
18-Oct-02 450
19-Oct-02 423
20-Oct-02 397
21-Oct-02 278
22-Oct-02 67
23-Oct-02 85
24-Oct-02 174
25-Oct-02 231
26-Oct-02 288
27-Oct-02 343
28-Oct-02 284
29-Oct-02 298
30-Oct-02 283
31-Oct-02 188
1-Nov-02 192
2-Nov-02 184
3-Nov-02 226
4-Nov-02 312
5-Nov-02 347
6-Nov-02 424
7-Nov-02 393
8-Nov-02 470
9-Nov-02 478
10-Nov-02 513
11-Nov-02 604
12-Nov-02 611
13-Nov-02 647
14-Nov-02 694
15-Nov-02 684
16-Nov-02 611
17-Nov-02 680
18-Nov-02 646
19-Nov-02 623
20-Nov-02 650
21-Nov-02 556
22-Nov-02 656
23-Nov-02 633
24-Nov-02 532
25-Nov-02 394
26-Nov-02 396
27-Nov-02 381
28-Nov-02 522
29-Nov-02 761
30-Nov-02 774
1-Dec-02 793
2-Dec-02 603
3-Dec-02 408
4-Dec-02 390
5-Dec-02 384
6-Dec-02 427
7-Dec-02 462
8-Dec-02 439
9-Dec-02 404
10-Dec-02 359
11-Dec-02 451
12-Dec-02 539
13-Dec-02 640
14-Dec-02 656
15-Dec-02 537
16-Dec-02 506
17-Dec-02 221
18-Dec-02 424
19-Dec-02 663
20-Dec-02 746
21-Dec-02 1079
22-Dec-02 932
23-Dec-02 900
24-Dec-02 890
25-Dec-02 799
26-Dec-02 925
27-Dec-02 895
28-Dec-02 906
29-Dec-02 880
30-Dec-02 923
31-Dec-02 866
1-Jan-03 814
2-Jan-03 1025
3-Jan-03 1134
4-Jan-03 1382
5-Jan-03 1386
6-Jan-03 1417
7-Jan-03 1362
8-Jan-03 1397
9-Jan-03 1129
10-Jan-03 853
11-Jan-03 695
12-Jan-03 706
13-Jan-03 692
14-Jan-03 762
15-Jan-03 887
16-Jan-03 1003
17-Jan-03 1159
18-Jan-03 1196
19-Jan-03 1159
20-Jan-03 1118
21-Jan-03 1046
22-Jan-03 1097
23-Jan-03 1046
24-Jan-03 1032
25-Jan-03 905
26-Jan-03 802
27-Jan-03 807
28-Jan-03 952
29-Jan-03 1166
30-Jan-03 1128
31-Jan-03 1077
1-Feb-03 782
2-Feb-03 609
3-Feb-03 892
4-Feb-03 1159
5-Feb-03 1581
6-Feb-03 1467
7-Feb-03 1350
8-Feb-03 1268
9-Feb-03 1199
10-Feb-03 1168
11-Feb-03 1019
12-Feb-03 855
13-Feb-03 874
14-Feb-03 906
15-Feb-03 887
16-Feb-03 916
17-Feb-03 934
18-Feb-03 844
19-Feb-03 1078
20-Feb-03 1123
21-Feb-03 1120
22-Feb-03 1122
23-Feb-03 1072
24-Feb-03 1083
25-Feb-03 1116
26-Feb-03 903
27-Feb-03 691
28-Feb-03 588
1-Mar-03 607
2-Mar-03 655
3-Mar-03 774
4-Mar-03 825
5-Mar-03 838
6-Mar-03 879
7-Mar-03 834
8-Mar-03 514
9-Mar-03 485
10-Mar-03 419
11-Mar-03 597
12-Mar-03 769
13-Mar-03 810