Site ID: 983 Lat. 37.0408 USA Illinois
River: Mississippi Long. -89.2950
Site name: Cairo Contributing area: 1830045 km2 Ratio to Comparison Station: 64.81
Latest measurement: 21-Jul-10 Mean annual runoff: 18 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 14.7 mm
Latest M/C ratio: 1.40 Seven day total: 0.5 mm
Estimated current discharge: 1218 m3/sec Percent of mean 7-day total: 152.6 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 5003 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 4802 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
6 2002 no data no data no data no data no data no data no data 0.8 1.1 0.9 1.3 1.5
22 2003 1.2 1.4 2.3 2.1 4.3 2.3 1.8 1.4 1.2 1.2 1.0 1.3
19 2004 1.4 1.0 1.6 1.5 1.7 2.3 1.5 1.4 1.3 1.3 1.4 2.5
19 2005 4.1 2.7 1.8 2.4 1.5 1.5 0.2 0.9 0.6 0.7 1.4 1.3
11 2006 1.3 0.9 1.5 1.3 1.7 0.9 1.0 0.9 1.0 0.8 0.0 0.0
14 2007 1.4 1.0 1.8 1.4 1.4 1.1 1.2 1.1 0.9 0.9 1.2 0.9
22 2008 1.1 0.8 2.0 4.3 3.5 2.5 2.7 1.3 1.1 1.0 1.0 0.9
21 2009 0.8 1.3 1.9 2.4 5.1 1.9 1.3 1.4 0.9 1.0 1.9 1.3
15 2010 1.2 1.2 2.4 3.1 3.6 1.6 1.4 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 18 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-02 804
23-Jul-02 804
24-Jul-02 892
25-Jul-02 789
26-Jul-02 682
27-Jul-02 726
28-Jul-02 800
29-Jul-02 859
30-Jul-02 932
31-Jul-02 994
1-Aug-02 944
2-Aug-02 906
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02
10-Aug-02 1111
11-Aug-02 1252
12-Aug-02 1079
13-Aug-02 1018
14-Aug-02 719
15-Aug-02 596
16-Aug-02 455
17-Aug-02 447
18-Aug-02 499
19-Aug-02 861
20-Aug-02 751
21-Aug-02 3
22-Aug-02 177
23-Aug-02 128
24-Aug-02 103
25-Aug-02 963
26-Aug-02 741
27-Aug-02 671
28-Aug-02 900
29-Aug-02 835
30-Aug-02 965
31-Aug-02 964
1-Sep-02 919
2-Sep-02 938
3-Sep-02 867
4-Sep-02 1014
5-Sep-02 944
6-Sep-02 1102
7-Sep-02 1036
8-Sep-02 970
9-Sep-02 976
10-Sep-02 940
11-Sep-02 1024
12-Sep-02 1024
13-Sep-02 847
14-Sep-02 847
15-Sep-02 933
16-Sep-02 484
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1029
22-Sep-02 1026
23-Sep-02 1080
24-Sep-02 1265
25-Sep-02 1041
26-Sep-02 1060
27-Sep-02 677
28-Sep-02 573
29-Sep-02 630
30-Sep-02 747
1-Oct-02 990
2-Oct-02 808
3-Oct-02 778
4-Oct-02 548
5-Oct-02 433
6-Oct-02 581
7-Oct-02 665
8-Oct-02 773
9-Oct-02 738
10-Oct-02 575
11-Oct-02 446
12-Oct-02 378
13-Oct-02 456
14-Oct-02 90
15-Oct-02 492
16-Oct-02 504
17-Oct-02 706
18-Oct-02 625
19-Oct-02 629
20-Oct-02 521
21-Oct-02 403
22-Oct-02 253
23-Oct-02 504
24-Oct-02 704
25-Oct-02 646
26-Oct-02 612
27-Oct-02 683
28-Oct-02 721
29-Oct-02 758
30-Oct-02 608
31-Oct-02 469
1-Nov-02 547
2-Nov-02 631
3-Nov-02 668
4-Nov-02 686
5-Nov-02 845
6-Nov-02 956
7-Nov-02 1085
8-Nov-02 1052
9-Nov-02 1125
10-Nov-02 1115
11-Nov-02 959
12-Nov-02 957
13-Nov-02 810
14-Nov-02 702
15-Nov-02 1115
16-Nov-02 765
17-Nov-02 947
18-Nov-02 886
19-Nov-02 774
20-Nov-02 1051
21-Nov-02 926
22-Nov-02 946
23-Nov-02 1171
24-Nov-02 1094
25-Nov-02 1134
26-Nov-02 905
27-Nov-02 777
28-Nov-02 736
29-Nov-02 552
30-Nov-02 639
1-Dec-02 828
2-Dec-02 744
3-Dec-02 720
4-Dec-02 830
5-Dec-02 675
6-Dec-02 677
7-Dec-02 1193
8-Dec-02 1340
9-Dec-02 2139
10-Dec-02 1857
11-Dec-02 1483
12-Dec-02 1461
13-Dec-02 1062
14-Dec-02 866
15-Dec-02 908
16-Dec-02 708
17-Dec-02 551
18-Dec-02 624
19-Dec-02 786
20-Dec-02 1248
21-Dec-02 1486
22-Dec-02 1890
23-Dec-02 1962
24-Dec-02 1647
25-Dec-02 1109
26-Dec-02 793
27-Dec-02 371
28-Dec-02 343
29-Dec-02 261
30-Dec-02 392
31-Dec-02 485
1-Jan-03 1056
2-Jan-03 1034
3-Jan-03 1353
4-Jan-03 1349
5-Jan-03 1325
6-Jan-03 1220
7-Jan-03 1171
8-Jan-03 1119
9-Jan-03 1126
10-Jan-03 1429
11-Jan-03 1404
12-Jan-03 1374
13-Jan-03 1134
14-Jan-03 888
15-Jan-03 795
16-Jan-03 734
17-Jan-03 774
18-Jan-03 489
19-Jan-03 319
20-Jan-03 361
21-Jan-03 555
22-Jan-03 521
23-Jan-03 647
24-Jan-03 598
25-Jan-03 339
26-Jan-03 303
27-Jan-03 355
28-Jan-03 333
29-Jan-03 380
30-Jan-03 275
31-Jan-03 283
1-Feb-03 383
2-Feb-03 596
3-Feb-03 864
4-Feb-03 1287
5-Feb-03 1201
6-Feb-03 1128
7-Feb-03 961
8-Feb-03 765
9-Feb-03 650
10-Feb-03 611
11-Feb-03 465
12-Feb-03 719
13-Feb-03 881
14-Feb-03 833
15-Feb-03 683
16-Feb-03 558
17-Feb-03 424
18-Feb-03 713
19-Feb-03 927
20-Feb-03 1582
21-Feb-03 1636
22-Feb-03 1561
23-Feb-03 1680
24-Feb-03 1697
25-Feb-03 1696
26-Feb-03 1844
27-Feb-03 1803
28-Feb-03 1601
1-Mar-03 1500
2-Mar-03 1644
3-Mar-03 1556
4-Mar-03 1458
5-Mar-03 1489
6-Mar-03 1325
7-Mar-03 1287
8-Mar-03 1551
9-Mar-03 1637
10-Mar-03 1787
11-Mar-03 1652
12-Mar-03 1684