Site ID: 924 Lat. 45.8612 USA 0
River: Columbia Long. -122.7909
Site name: 0 Contributing area: 638916 km2 Ratio to Comparison Station: 22.63
Latest measurement: 20-Jul-10 Mean annual runoff: 42 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 31.5 mm
Latest M/C ratio: 1.34 Seven day total: 1.0 mm
Estimated current discharge: 938 m3/sec Percent of mean 7-day total: 131.5 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 1914 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1871 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
8 2002 no data no data no data no data no data no data no data 1.5 1.5 1.3 1.9 1.8
26 2003 1.9 2.9 2.9 3.4 2.8 3.0 2.7 1.9 1.9 0.8 0.8 1.2
17 2004 1.9 1.8 2.5 2.5 2.3 1.7 2.2 1.1 0.4 0.1 0.2 0.1
39 2005 0.4 0.7 4.1 4.3 4.2 3.7 0.4 4.9 4.2 3.7 4.0 4.7
49 2006 5.0 4.7 5.0 5.6 4.5 4.9 5.2 5.0 4.3 4.4 0.0 0.0
53 2007 4.8 4.2 5.3 4.5 4.8 4.5 4.5 4.4 4.0 4.1 3.5 4.4
53 2008 3.7 4.9 4.7 4.3 4.7 4.6 4.8 4.5 4.5 4.0 4.4 3.7
56 2009 5.0 4.8 4.6 4.3 5.0 4.6 5.3 5.0 4.8 4.0 4.6 4.3
31 2010 5.2 4.9 5.0 4.5 4.4 4.1 3.4 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 42 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-02 717
23-Jul-02 717
24-Jul-02 776
25-Jul-02 966
26-Jul-02 375
27-Jul-02 390
28-Jul-02 99
29-Jul-02 128
30-Jul-02 254
31-Jul-02 212
1-Aug-02 318
2-Aug-02 420
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 359
10-Aug-02 359
11-Aug-02 574
12-Aug-02 756
13-Aug-02 769
14-Aug-02 881
15-Aug-02 723
16-Aug-02 463
17-Aug-02 496
18-Aug-02 177
19-Aug-02 221
20-Aug-02 199
21-Aug-02 175
22-Aug-02 156
23-Aug-02 351
24-Aug-02 351
25-Aug-02 525
26-Aug-02 668
27-Aug-02 305
28-Aug-02 390
29-Aug-02 251
30-Aug-02 482
31-Aug-02 528
1-Sep-02 601
2-Sep-02 664
3-Sep-02 333
4-Sep-02 383
5-Sep-02 226
6-Sep-02 384
7-Sep-02 358
8-Sep-02 374
9-Sep-02 295
10-Sep-02 232
11-Sep-02 280
12-Sep-02 278
13-Sep-02 577
14-Sep-02 561
15-Sep-02 561
16-Sep-02 664
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 111
22-Sep-02 530
23-Sep-02 327
24-Sep-02 472
25-Sep-02 433
26-Sep-02 465
27-Sep-02 665
28-Sep-02 374
29-Sep-02 765
30-Sep-02 257
1-Oct-02 349
2-Oct-02 436
3-Oct-02 202
4-Oct-02 364
5-Oct-02 386
6-Oct-02 502
7-Oct-02 428
8-Oct-02 437
9-Oct-02 371
10-Oct-02 402
11-Oct-02 480
12-Oct-02 462
13-Oct-02 474
14-Oct-02 93
15-Oct-02 289
16-Oct-02 307
17-Oct-02 253
18-Oct-02 345
19-Oct-02 253
20-Oct-02 184
21-Oct-02 158
22-Oct-02 319
23-Oct-02 257
24-Oct-02 507
25-Oct-02 414
26-Oct-02 344
27-Oct-02 287
28-Oct-02 42
29-Oct-02 135
30-Oct-02 109
31-Oct-02 284
1-Nov-02 185
2-Nov-02 212
3-Nov-02 138
4-Nov-02 325
5-Nov-02 495
6-Nov-02 684
7-Nov-02 1202
8-Nov-02 846
9-Nov-02 842
10-Nov-02 553
11-Nov-02 341
12-Nov-02 148
13-Nov-02 145
14-Nov-02 255
15-Nov-02 232
16-Nov-02 592
17-Nov-02 475
18-Nov-02 496
19-Nov-02 409
20-Nov-02 310
21-Nov-02 242
22-Nov-02 344
23-Nov-02 766
24-Nov-02 694
25-Nov-02 821
26-Nov-02 510
27-Nov-02 406
28-Nov-02 300
29-Nov-02 366
30-Nov-02 589
1-Dec-02 531
2-Dec-02 625
3-Dec-02 157
4-Dec-02 233
5-Dec-02 191
6-Dec-02 381
7-Dec-02 518
8-Dec-02 384
9-Dec-02 759
10-Dec-02 696
11-Dec-02 679
12-Dec-02 711
13-Dec-02 646
14-Dec-02 401
15-Dec-02 285
16-Dec-02 317
17-Dec-02 42
18-Dec-02 321
19-Dec-02 309
20-Dec-02 337
21-Dec-02 471
22-Dec-02 492
23-Dec-02 617
24-Dec-02 578
25-Dec-02 651
26-Dec-02 378
27-Dec-02 519
28-Dec-02 445
29-Dec-02 361
30-Dec-02 209
31-Dec-02 143
1-Jan-03 176
2-Jan-03 284
3-Jan-03 756
4-Jan-03 627
5-Jan-03 497
6-Jan-03 180
7-Jan-03 116
8-Jan-03 48
9-Jan-03 162
10-Jan-03 565
11-Jan-03 549
12-Jan-03 668
13-Jan-03 483
14-Jan-03 392
15-Jan-03 227
16-Jan-03 66
17-Jan-03 163
18-Jan-03 205
19-Jan-03 430
20-Jan-03 332
21-Jan-03 446
22-Jan-03 387
23-Jan-03 337
24-Jan-03 432
25-Jan-03 335
26-Jan-03 490
27-Jan-03 734
28-Jan-03 967
29-Jan-03 1037
30-Jan-03 1326
31-Jan-03 976
1-Feb-03 683
2-Feb-03 644
3-Feb-03 266
4-Feb-03 611
5-Feb-03 581
6-Feb-03 640
7-Feb-03 649
8-Feb-03 634
9-Feb-03 724
10-Feb-03 813
11-Feb-03 1087
12-Feb-03 939
13-Feb-03 947
14-Feb-03 854
15-Feb-03 853
16-Feb-03 722
17-Feb-03 735
18-Feb-03 743
19-Feb-03 696
20-Feb-03 983
21-Feb-03 925
22-Feb-03 955
23-Feb-03 743
24-Feb-03 714
25-Feb-03 666
26-Feb-03 770
27-Feb-03 887
28-Feb-03 737
1-Mar-03 646
2-Mar-03 431
3-Mar-03 504
4-Mar-03 455
5-Mar-03 514
6-Mar-03 533
7-Mar-03 332
8-Mar-03 511
9-Mar-03