Site ID: 327 Lat. 61.0250 Russia Khanty-Mansiyskiy
River: Ob Long. 75.7718
Site name: Vala Contributing area: 868892 km2 Ratio to Comparison Station: 30.77
Latest measurement: 30-Jul-10 Mean annual runoff: 42 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 38.1 mm
Latest M/C ratio: 1.79 Seven day total: 2.9 mm
Estimated current discharge: 3146 m3/sec Percent of mean 7-day total: 145.0 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 5349 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 5385 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
10 2002 no data no data no data no data no data no data no data 3.6 3.0 2.7 0.7 0.2
40 2003 1.1 1.0 2.2 1.0 6.9 11.5 6.3 4.3 3.0 2.1 0.1 0.5
33 2004 0.9 1.1 0.9 0.1 4.9 10.6 6.4 2.8 2.6 1.6 0.8 0.0
41 2005 0.5 0.0 0.5 1.3 7.8 8.6 5.3 5.1 4.3 3.5 1.2 2.8
36 2006 0.3 0.7 1.8 0.7 3.9 9.6 7.6 4.5 4.2 2.5 0.0 0.0
46 2007 2.8 0.7 3.2 2.9 6.7 1.0 9.5 7.4 4.8 4.5 1.9 1.1
50 2008 1.3 1.7 0.4 1.6 8.9 10.5 7.9 5.3 4.8 4.4 2.4 1.2
46 2009 1.1 0.6 2.2 2.1 8.2 9.6 7.4 5.6 4.7 3.4 0.6 0.2
38 2010 0.5 0.0 1.9 2.0 5.9 13.2 14.0 0.7 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 5215
23-Jul-02 5215
24-Jul-02 4917
25-Jul-02 3149
26-Jul-02 3154
27-Jul-02 4628
28-Jul-02 4500
29-Jul-02 5785
30-Jul-02 5707
31-Jul-02 4678
1-Aug-02 5522
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 2302
10-Aug-02 1289
11-Aug-02 1599
12-Aug-02 1459
13-Aug-02 1252
14-Aug-02 1522
15-Aug-02 1332
16-Aug-02 1319
17-Aug-02 1460
18-Aug-02 1437
19-Aug-02 1330
20-Aug-02 1250
21-Aug-02 707
22-Aug-02 674
23-Aug-02 638
24-Aug-02 919
25-Aug-02 1449
26-Aug-02 1618
27-Aug-02 1722
28-Aug-02 1484
29-Aug-02 1574
30-Aug-02 1339
31-Aug-02 1154
1-Sep-02 1173
2-Sep-02 1086
3-Sep-02 1241
4-Sep-02 1430
5-Sep-02 1341
6-Sep-02 1368
7-Sep-02 1228
8-Sep-02 1214
9-Sep-02 1209
10-Sep-02 1225
11-Sep-02 1332
12-Sep-02 1300
13-Sep-02 1321
14-Sep-02 1329
15-Sep-02 1395
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1514
22-Sep-02 1040
23-Sep-02 879
24-Sep-02 1019
25-Sep-02 772
26-Sep-02 934
27-Sep-02 1241
28-Sep-02 1157
29-Sep-02 1269
30-Sep-02 1051
1-Oct-02 846
2-Oct-02 925
3-Oct-02 946
4-Oct-02 1121
5-Oct-02 1267
6-Oct-02 1119
7-Oct-02 987
8-Oct-02 1060
9-Oct-02 1072
10-Oct-02 1170
11-Oct-02 1217
12-Oct-02 1010
13-Oct-02 957
14-Oct-02 839
15-Oct-02 767
16-Oct-02 751
17-Oct-02 814
18-Oct-02 757
19-Oct-02 905
20-Oct-02 921
21-Oct-02 802
22-Oct-02 934
23-Oct-02 912
24-Oct-02 764
25-Oct-02 675
26-Oct-02 539
27-Oct-02 349
28-Oct-02 368
29-Oct-02 630
30-Oct-02 710
31-Oct-02 881
1-Nov-02 997
2-Nov-02 911
3-Nov-02 842
4-Nov-02 813
5-Nov-02 592
6-Nov-02 518
7-Nov-02 420
8-Nov-02 311
9-Nov-02 263
10-Nov-02 172
11-Nov-02 58
12-Nov-02 35
13-Nov-02 68
14-Nov-02 184
15-Nov-02 341
16-Nov-02 298
17-Nov-02 238
18-Nov-02 132
19-Nov-02 99
20-Nov-02 64
21-Nov-02 76
22-Nov-02 3
23-Nov-02 3
24-Nov-02 3
25-Nov-02 3
26-Nov-02 3
27-Nov-02 3
28-Nov-02 3
29-Nov-02 3
30-Nov-02 3
1-Dec-02 3
2-Dec-02 3
3-Dec-02 3
4-Dec-02 3
5-Dec-02 3
6-Dec-02 3
7-Dec-02 3
8-Dec-02 3
9-Dec-02 3
10-Dec-02 3
11-Dec-02 3
12-Dec-02 3
13-Dec-02 3
14-Dec-02 3
15-Dec-02 3
16-Dec-02 3
17-Dec-02 33
18-Dec-02 54
19-Dec-02 109
20-Dec-02 116
21-Dec-02 116
22-Dec-02 144
23-Dec-02 73
24-Dec-02 94
25-Dec-02 184
26-Dec-02 204
27-Dec-02 266
28-Dec-02 228
29-Dec-02 182
30-Dec-02 143
31-Dec-02 127
1-Jan-03 167
2-Jan-03 298
3-Jan-03 269
4-Jan-03 261
5-Jan-03 320
6-Jan-03 220
7-Jan-03 361
8-Jan-03 462
9-Jan-03 487
10-Jan-03 423
11-Jan-03 250
12-Jan-03 178
13-Jan-03 159
14-Jan-03 167
15-Jan-03 258
16-Jan-03 310
17-Jan-03 344
18-Jan-03 429
19-Jan-03 592
20-Jan-03 621
21-Jan-03 703
22-Jan-03 618
23-Jan-03 393
24-Jan-03 311
25-Jan-03 217
26-Jan-03 219
27-Jan-03 271
28-Jan-03 299
29-Jan-03 282
30-Jan-03 387
31-Jan-03 421
1-Feb-03 646
2-Feb-03 715
3-Feb-03 757
4-Feb-03 711
5-Feb-03 502
6-Feb-03 293
7-Feb-03 223
8-Feb-03 91
9-Feb-03 195
10-Feb-03 323
11-Feb-03 446
12-Feb-03 548
13-Feb-03 464
14-Feb-03 439
15-Feb-03 391
16-Feb-03 319
17-Feb-03 318
18-Feb-03 221
19-Feb-03 180
20-Feb-03 159
21-Feb-03 228
22-Feb-03 286
23-Feb-03 339
24-Feb-03 381
25-Feb-03 235
26-Feb-03 318
27-Feb-03 238
28-Feb-03
1-Mar-03 169
2-Mar-03 219
3-Mar-03 321
4-Mar-03 308
5-Mar-03
6-Mar-03
7-Mar-03
8-Mar-03
9-Mar-03
10-Mar-03
11-Mar-03 409
12-Mar-03 695
13-Mar-03 783
14-Mar-03 920
15-Mar-03 1141
16-Mar-03 945
17-Mar-03 825
18-Mar-03 807
19-Mar-03 899
20-Mar-03 973
21-Mar-03 1179
22-Mar-03 1380
23-Mar-03 1143
24-Mar-03 1218
25-Mar-03 1275
26-Mar-03 1084
27-Mar-03 1243
28-Mar-03 1117
29-Mar-03 1080
30-Mar-03 1311
31-Mar-03 858
1-Apr-03 936