Site ID: 923 Lat. 45.8843 USA 0
River: Columbia Long. -119.6658
Site name: 0 Contributing area: 543146 km2 Ratio to Comparison Station: 19.23
Latest measurement: 20-Jul-10 Mean annual runoff: 76 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 47.3 mm
Latest M/C ratio: 1.59 Seven day total: 2.2 mm
Estimated current discharge: 2107 m3/sec Percent of mean 7-day total: 112.8 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 2985 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 2925 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
23 2002 no data no data no data no data no data no data no data 5.6 5.4 5.2 4.1 2.9
57 2003 1.9 2.7 4.2 4.9 7.1 9.0 8.0 6.5 4.3 4.0 2.6 1.5
51 2004 0.4 1.7 3.9 4.2 6.8 7.0 6.9 6.5 4.5 3.8 2.8 2.5
74 2005 0.8 2.9 4.9 7.9 9.0 8.4 1.3 11.0 8.6 7.3 6.2 5.9
80 2006 4.1 5.3 6.7 7.3 8.1 9.6 11.6 11.2 8.6 7.4 0.0 0.0
98 2007 5.4 5.2 7.6 8.1 10.1 9.7 11.7 10.7 9.5 7.8 6.6 5.5
90 2008 4.6 6.1 8.1 7.5 9.4 9.9 10.9 9.6 7.9 6.1 5.6 4.3
81 2009 3.7 3.9 5.4 6.2 8.8 9.2 10.4 9.1 7.5 6.3 6.4 4.4
47 2010 3.8 4.4 7.7 7.7 7.7 8.3 7.8 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 76 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 1748
23-Jul-02 1748
24-Jul-02 1819
25-Jul-02 1719
26-Jul-02 1792
27-Jul-02 2073
28-Jul-02 1916
29-Jul-02 1740
30-Jul-02 1546
31-Jul-02 1546
1-Aug-02 1491
2-Aug-02 1539
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 1300
10-Aug-02 1206
11-Aug-02 1131
12-Aug-02 1131
13-Aug-02 1006
14-Aug-02 1200
15-Aug-02 1769
16-Aug-02 1807
17-Aug-02 2080
18-Aug-02 1939
19-Aug-02 1677
20-Aug-02 1412
21-Aug-02 1369
22-Aug-02 1159
23-Aug-02 1091
24-Aug-02 1161
25-Aug-02 984
26-Aug-02 1238
27-Aug-02 1264
28-Aug-02 1203
29-Aug-02 1505
30-Aug-02 1615
31-Aug-02 1868
1-Sep-02 1792
2-Sep-02 1574
3-Sep-02 1361
4-Sep-02 1261
5-Sep-02 1453
6-Sep-02 1564
7-Sep-02 1740
8-Sep-02 1587
9-Sep-02 1320
10-Sep-02 1237
11-Sep-02 1227
12-Sep-02 1209
13-Sep-02 1266
14-Sep-02 1345
15-Sep-02 1066
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1664
22-Sep-02 1394
23-Sep-02 1332
24-Sep-02 1330
25-Sep-02 1313
26-Sep-02 1205
27-Sep-02 1303
28-Sep-02 1122
29-Sep-02 977
30-Sep-02 1277
1-Oct-02 1212
2-Oct-02 1411
3-Oct-02 1290
4-Oct-02 1122
5-Oct-02 951
6-Oct-02 872
7-Oct-02 1083
8-Oct-02 1211
9-Oct-02 1322
10-Oct-02 1398
11-Oct-02 1250
12-Oct-02 1300
13-Oct-02 1251
14-Oct-02 1028
15-Oct-02 1021
16-Oct-02 746
17-Oct-02 700
18-Oct-02 935
19-Oct-02 911
20-Oct-02 1091
21-Oct-02 1326
22-Oct-02 1277
23-Oct-02 1313
24-Oct-02 1338
25-Oct-02 959
26-Oct-02 909
27-Oct-02 870
28-Oct-02 786
29-Oct-02 848
30-Oct-02 634
31-Oct-02 587
1-Nov-02 538
2-Nov-02 537
3-Nov-02 749
4-Nov-02 779
5-Nov-02 791
6-Nov-02 861
7-Nov-02 949
8-Nov-02 991
9-Nov-02 941
10-Nov-02 848
11-Nov-02 902
12-Nov-02 839
13-Nov-02 802
14-Nov-02 679
15-Nov-02 591
16-Nov-02 543
17-Nov-02 808
18-Nov-02 1191
19-Nov-02 1490
20-Nov-02 1490
21-Nov-02 1351
22-Nov-02 1106
23-Nov-02 862
24-Nov-02 706
25-Nov-02 675
26-Nov-02 550
27-Nov-02 725
28-Nov-02 749
29-Nov-02 682
30-Nov-02 763
1-Dec-02 497
2-Dec-02 487
3-Dec-02 580
4-Dec-02 492
5-Dec-02 569
6-Dec-02 616
7-Dec-02 435
8-Dec-02 569
9-Dec-02 622
10-Dec-02 581
11-Dec-02 751
12-Dec-02 876
13-Dec-02 834
14-Dec-02 1028
15-Dec-02 862
16-Dec-02 741
17-Dec-02 603
18-Dec-02 341
19-Dec-02 610
20-Dec-02 535
21-Dec-02 747
22-Dec-02 685
23-Dec-02 484
24-Dec-02 411
25-Dec-02 287
26-Dec-02 343
27-Dec-02 695
28-Dec-02 627
29-Dec-02 737
30-Dec-02 499
31-Dec-02 300
1-Jan-03 350
2-Jan-03 351
3-Jan-03 634
4-Jan-03 516
5-Jan-03 593
6-Jan-03 515
7-Jan-03 496
8-Jan-03 586
9-Jan-03 511
10-Jan-03 411
11-Jan-03 404
12-Jan-03 445
13-Jan-03 313
14-Jan-03 304
15-Jan-03 268
16-Jan-03 288
17-Jan-03 346
18-Jan-03 203
19-Jan-03 180
20-Jan-03 127
21-Jan-03 111
22-Jan-03 235
23-Jan-03 258
24-Jan-03 191
25-Jan-03 386
26-Jan-03 487
27-Jan-03 291
28-Jan-03 452
29-Jan-03 377
30-Jan-03 480
31-Jan-03 755
1-Feb-03 595
2-Feb-03 445
3-Feb-03 391
4-Feb-03 276
5-Feb-03 471
6-Feb-03 557
7-Feb-03 425
8-Feb-03 479
9-Feb-03 472
10-Feb-03 520
11-Feb-03 640
12-Feb-03 766
13-Feb-03 804
14-Feb-03 843
15-Feb-03 746
16-Feb-03 708
17-Feb-03 508
18-Feb-03 407
19-Feb-03 414
20-Feb-03 272
21-Feb-03 566
22-Feb-03 748
23-Feb-03 923
24-Feb-03 741
25-Feb-03 782
26-Feb-03 757
27-Feb-03 675
28-Feb-03 1036
1-Mar-03 952
2-Mar-03 941
3-Mar-03 951
4-Mar-03 793
5-Mar-03 858
6-Mar-03 827
7-Mar-03 774
8-Mar-03 821
9-Mar-03 785
10-Mar-03 1047
11-Mar-03 791