Site ID: 1043 Lat. 46.0501 Canada 0
River: St Lawrence Long. -73.1626
Site name: 0 Contributing area: 10000 km2 Ratio to Comparison Station: 0.35
Latest measurement: 29-Jul-10 Mean annual runoff: 1587 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 694.1 mm
Latest M/C ratio: 1.22 Seven day total: 30.8 mm
Estimated current discharge: 466 m3/sec Percent of mean 7-day total: 106.0 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 2335 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 2249 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
1035 2002 no data no data no data no data no data no data no data 223.0 289.5 243.7 187.1 92.0
1908 2003 106.9 10.6 21.7 111.2 154.9 166.5 256.0 264.8 236.8 270.4 208.2 100.1
2014 2004 1.2 0.8 1.5 119.7 251.8 189.5 221.2 270.4 327.9 340.6 177.4 111.8
1629 2005 173.4 149.7 61.4 90.2 127.1 185.7 34.9 177.7 149.3 133.0 155.2 191.4
1063 2006 2.8 0.4 143.9 124.4 91.3 144.1 162.7 169.2 117.0 107.1 0.0 0.0
1203 2007 90.1 5.1 24.8 109.6 157.1 169.6 180.3 132.5 103.5 162.9 55.8 11.4
1645 2008 94.8 5.0 0.8 218.7 208.5 113.2 126.7 190.6 164.7 152.5 155.5 213.7
1651 2009 182.2 21.9 147.0 148.9 183.9 123.8 137.9 180.5 160.4 147.5 164.0 53.1
694 2010 1.1 1.0 168.7 104.0 132.4 114.2 167.8 4.9 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 1587 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-02 891
23-Jul-02 891
24-Jul-02 1146
25-Jul-02 1111
26-Jul-02 1159
27-Jul-02 920
28-Jul-02 1032
29-Jul-02 857
30-Jul-02 1098
31-Jul-02 1126
1-Aug-02 955
2-Aug-02 1682
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 742
10-Aug-02 742
11-Aug-02 530
12-Aug-02 576
13-Aug-02 509
14-Aug-02 712
15-Aug-02 1026
16-Aug-02 1165
17-Aug-02 1404
18-Aug-02 1490
19-Aug-02 1166
20-Aug-02 1501
21-Aug-02 1145
22-Aug-02 1239
23-Aug-02 1319
24-Aug-02 1041
25-Aug-02 1139
26-Aug-02 907
27-Aug-02 1038
28-Aug-02 1027
29-Aug-02 899
30-Aug-02 927
31-Aug-02 924
1-Sep-02 881
2-Sep-02 1081
3-Sep-02 1083
4-Sep-02 873
5-Sep-02 1376
6-Sep-02 1300
7-Sep-02 1485
8-Sep-02 1457
9-Sep-02 1297
10-Sep-02 1480
11-Sep-02 1344
12-Sep-02 1519
13-Sep-02 1238
14-Sep-02 1063
15-Sep-02 1063
16-Sep-02 973
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1404
22-Sep-02 1272
23-Sep-02 1555
24-Sep-02 1297
25-Sep-02 1443
26-Sep-02 1448
27-Sep-02 1266
28-Sep-02 1713
29-Sep-02 1313
30-Sep-02 1284
1-Oct-02 1191
2-Oct-02 871
3-Oct-02 934
4-Oct-02 772
5-Oct-02 897
6-Oct-02 670
7-Oct-02 996
8-Oct-02 976
9-Oct-02 1109
10-Oct-02 1254
11-Oct-02 1260
12-Oct-02 1362
13-Oct-02 1245
14-Oct-02 1251
15-Oct-02 891
16-Oct-02 989
17-Oct-02 952
18-Oct-02 760
19-Oct-02 748
20-Oct-02 497
21-Oct-02 541
22-Oct-02 609
23-Oct-02 913
24-Oct-02 783
25-Oct-02 1007
26-Oct-02 1021
27-Oct-02 785
28-Oct-02 796
29-Oct-02 483
30-Oct-02 841
31-Oct-02 799
1-Nov-02 1053
2-Nov-02 987
3-Nov-02 981
4-Nov-02 962
5-Nov-02 742
6-Nov-02 743
7-Nov-02 373
8-Nov-02 520
9-Nov-02 645
10-Nov-02 771
11-Nov-02 901
12-Nov-02 751
13-Nov-02 871
14-Nov-02 710
15-Nov-02 930
16-Nov-02 948
17-Nov-02 1062
18-Nov-02 1024
19-Nov-02 905
20-Nov-02 1010
21-Nov-02 766
22-Nov-02 620
23-Nov-02 261
24-Nov-02 108
25-Nov-02 199
26-Nov-02 420
27-Nov-02 408
28-Nov-02 706
29-Nov-02 709
30-Nov-02 568
1-Dec-02 689
2-Dec-02 439
3-Dec-02 364
4-Dec-02 274
5-Dec-02 173
6-Dec-02 135
7-Dec-02 122
8-Dec-02 67
9-Dec-02 68
10-Dec-02 111
11-Dec-02 140
12-Dec-02 141
13-Dec-02 50
14-Dec-02 64
15-Dec-02 170
16-Dec-02 243
17-Dec-02 426
18-Dec-02 423
19-Dec-02 285
20-Dec-02 274
21-Dec-02 235
22-Dec-02 365
23-Dec-02 580
24-Dec-02 766
25-Dec-02 842
26-Dec-02 663
27-Dec-02 581
28-Dec-02 546
29-Dec-02 430
30-Dec-02 505
31-Dec-02 475
1-Jan-03 366
2-Jan-03 298
3-Jan-03 372
4-Jan-03 560
5-Jan-03 693
6-Jan-03 882
7-Jan-03 833
8-Jan-03 747
9-Jan-03 551
10-Jan-03 570
11-Jan-03 642
12-Jan-03 521
13-Jan-03 452
14-Jan-03 338
15-Jan-03 315
16-Jan-03 341
17-Jan-03 369
18-Jan-03 468
19-Jan-03 406
20-Jan-03 357
21-Jan-03 285
22-Jan-03 199
23-Jan-03 178
24-Jan-03 119
25-Jan-03 166
26-Jan-03 190
27-Jan-03 187
28-Jan-03 193
29-Jan-03 221
30-Jan-03 304
31-Jan-03 251
1-Feb-03 275
2-Feb-03 283
3-Feb-03 149
4-Feb-03 151
5-Feb-03 166
6-Feb-03 3
7-Feb-03 142
8-Feb-03 3
9-Feb-03 3
10-Feb-03 3
11-Feb-03 3
12-Feb-03 3
13-Feb-03 3
14-Feb-03 3
15-Feb-03 3
16-Feb-03 3
17-Feb-03
18-Feb-03
19-Feb-03 3
20-Feb-03 3
21-Feb-03 3
22-Feb-03 3
23-Feb-03 3
24-Feb-03 3
25-Feb-03 3
26-Feb-03 3
27-Feb-03 3
28-Feb-03 3
1-Mar-03 3
2-Mar-03
3-Mar-03
4-Mar-03 3
5-Mar-03 3
6-Mar-03 3
7-Mar-03 3
8-Mar-03
9-Mar-03 3
10-Mar-03 3
11-Mar-03 3
12-Mar-03 3
13-Mar-03 3
14-Mar-03 3
15-Mar-03 3
16-Mar-03 3
17-Mar-03 3
18-Mar-03 3
19-Mar-03 3
20-Mar-03 3
21-Mar-03 583
22-Mar-03 581
23-Mar-03 1048
24-Mar-03 3
25-Mar-03