Site ID: 312 Lat. 60.2972 Russia Sakha (Yakutiya)
River: Lena Long. 120.1494
Site name: Olekminsk Contributing area: 547154 km2 Ratio to Comparison Station: 19.38
Latest measurement: 3-Aug-10 Mean annual runoff: 41 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 25.9 mm
Latest M/C ratio: 1.35 Seven day total: 1.2 mm
Estimated current discharge: 1004 m3/sec Percent of mean 7-day total: 76.6 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 5151 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 4964 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 4.8 3.6 1.1 0.0 0.0
29 2003 0.2 0.6 2.0 1.8 1.5 6.2 6.1 5.0 4.0 1.2 0.0 0.4
36 2004 0.2 0.1 0.9 3.4 3.1 12.6 6.5 5.1 3.5 0.9 0.1 0.0
38 2005 0.0 0.0 0.6 3.0 4.1 7.8 7.8 6.6 5.0 2.2 0.0 0.6
48 2006 0.0 0.0 0.5 2.1 3.5 20.1 7.5 5.9 6.0 2.2 0.0 0.0
44 2007 1.6 0.2 0.2 2.3 6.1 11.0 7.6 6.8 5.1 2.1 0.4 0.1
45 2008 0.3 1.0 2.7 2.4 3.6 10.1 7.6 6.3 6.5 3.7 0.3 0.1
50 2009 0.3 0.0 0.5 3.5 5.9 16.0 8.5 6.1 5.8 2.9 0.0 0.0
26 2010 0.0 0.0 0.9 1.3 6.8 8.3 7.7 0.9 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 41 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 1301
23-Jul-02 1301
24-Jul-02 1390
25-Jul-02 1323
26-Jul-02 1295
27-Jul-02 1324
28-Jul-02 1352
29-Jul-02 1222
30-Jul-02 1208
31-Jul-02 1156
1-Aug-02 1034
2-Aug-02 1080
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 1023
10-Aug-02 1181
11-Aug-02 1239
12-Aug-02 1124
13-Aug-02 1261
14-Aug-02 1247
15-Aug-02 1411
16-Aug-02 1588
17-Aug-02 1393
18-Aug-02 1448
19-Aug-02 1203
20-Aug-02 1170
21-Aug-02 1243
22-Aug-02 1186
23-Aug-02 1270
24-Aug-02 1254
25-Aug-02 1222
26-Aug-02 1252
27-Aug-02 1264
28-Aug-02 1285
29-Aug-02 1236
30-Aug-02 977
31-Aug-02 1043
1-Sep-02 979
2-Sep-02 1002
3-Sep-02 1000
4-Sep-02 754
5-Sep-02 911
6-Sep-02 956
7-Sep-02 908
8-Sep-02 1062
9-Sep-02 933
10-Sep-02 875
11-Sep-02 827
12-Sep-02 911
13-Sep-02 840
14-Sep-02 785
15-Sep-02 1165
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1080
22-Sep-02 1107
23-Sep-02 997
24-Sep-02 1043
25-Sep-02 852
26-Sep-02 792
27-Sep-02 707
28-Sep-02 612
29-Sep-02 677
30-Sep-02 751
1-Oct-02 800
2-Oct-02 524
3-Oct-02 372
4-Oct-02 269
5-Oct-02 269
6-Oct-02 397
7-Oct-02 450
8-Oct-02 508
9-Oct-02 495
10-Oct-02 387
11-Oct-02 440
12-Oct-02 350
13-Oct-02 306
14-Oct-02 385
15-Oct-02 278
16-Oct-02 282
17-Oct-02 172
18-Oct-02 95
19-Oct-02 30
20-Oct-02 3
21-Oct-02 3
22-Oct-02 3
23-Oct-02 3
24-Oct-02 3
25-Oct-02 3
26-Oct-02 3
27-Oct-02 3
28-Oct-02 3
29-Oct-02 3
30-Oct-02 3
31-Oct-02 3
1-Nov-02 3
2-Nov-02 3
3-Nov-02 3
4-Nov-02 3
5-Nov-02 3
6-Nov-02 3
7-Nov-02 3
8-Nov-02 3
9-Nov-02 3
10-Nov-02 3
11-Nov-02 3
12-Nov-02 3
13-Nov-02 3
14-Nov-02 3
15-Nov-02 3
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17-Nov-02 3
18-Nov-02 3
19-Nov-02 3
20-Nov-02 3
21-Nov-02 3
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 3
18-Dec-02 3
19-Dec-02 3
20-Dec-02 3
21-Dec-02 3
22-Dec-02 3
23-Dec-02 3
24-Dec-02 3
25-Dec-02 3
26-Dec-02 3
27-Dec-02 3
28-Dec-02 3
29-Dec-02 3
30-Dec-02 3
31-Dec-02 3
1-Jan-03 3
2-Jan-03 3
3-Jan-03 3
4-Jan-03 3
5-Jan-03 3
6-Jan-03 3
7-Jan-03 3
8-Jan-03 3
9-Jan-03 3
10-Jan-03 3
11-Jan-03 3
12-Jan-03 3
13-Jan-03 3
14-Jan-03 3
15-Jan-03 3
16-Jan-03 5
17-Jan-03 77
18-Jan-03 118
19-Jan-03 111
20-Jan-03 91
21-Jan-03 60
22-Jan-03 58
23-Jan-03 72
24-Jan-03 99
25-Jan-03 112
26-Jan-03 125
27-Jan-03 87
28-Jan-03 53
29-Jan-03 31
30-Jan-03 28
31-Jan-03 106
1-Feb-03 150
2-Feb-03 198
3-Feb-03 235
4-Feb-03 257
5-Feb-03 256
6-Feb-03 232
7-Feb-03 230
8-Feb-03 150
9-Feb-03 38
10-Feb-03 3
11-Feb-03 3
12-Feb-03 3
13-Feb-03 3
14-Feb-03 3
15-Feb-03 103
16-Feb-03 48
17-Feb-03 26
18-Feb-03 54
19-Feb-03 51
20-Feb-03 115
21-Feb-03 138
22-Feb-03 99
23-Feb-03 156
24-Feb-03 158
25-Feb-03 208
26-Feb-03 238
27-Feb-03 337
28-Feb-03 344
1-Mar-03 296
2-Mar-03 257
3-Mar-03 154
4-Mar-03 248
5-Mar-03 295
6-Mar-03 338
7-Mar-03 356
8-Mar-03 285
9-Mar-03 275
10-Mar-03 210
11-Mar-03 211
12-Mar-03 221
13-Mar-03 267
14-Mar-03 313
15-Mar-03 334
16-Mar-03 379
17-Mar-03 455
18-Mar-03 599
19-Mar-03 673
20-Mar-03 724
21-Mar-03 425
22-Mar-03 394
23-Mar-03 361
24-Mar-03 271
25-Mar-03 507
26-Mar-03 438
27-Mar-03 545
28-Mar-03 524
29-Mar-03 683
30-Mar-03 753
31-Mar-03 721
1-Apr-03 771
2-Apr-03 685
3-Apr-03 764
4-Apr-03 611
5-Apr-03 636
6-Apr-03 641
7-Apr-03 473
8-Apr-03 488
9-Apr-03 509
10-Apr-03 592
11-Apr-03 814
12-Apr-03 764
13-Apr-03 714
14-Apr-03 566
15-Apr-03 598