Site ID: 306 Lat. 64.0925 Russia Sakha (Yakutiya)
River: Lena Long. 127.0155
Site name: Sangar Contributing area: 1694934 km2 Ratio to Comparison Station: 60.02
Latest measurement: 3-Aug-10 Mean annual runoff: 21 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 15.3 mm
Latest M/C ratio: 1.62 Seven day total: 1.0 mm
Estimated current discharge: 2275 m3/sec Percent of mean 7-day total: 87.1 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 5576 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 5516 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
5 2002 no data no data no data no data no data no data no data 3.0 1.6 0.2 0.0 0.0
14 2003 0.0 0.0 0.0 0.0 0.0 3.0 4.7 3.3 2.6 0.4 0.0 0.0
15 2004 0.0 0.0 0.0 0.0 0.4 4.5 4.7 3.1 2.2 0.4 0.0 0.0
23 2005 0.0 0.0 0.0 0.0 0.6 6.1 5.0 4.5 5.0 1.4 0.0 0.0
23 2006 0.0 0.0 0.0 0.0 0.9 7.0 5.7 3.6 4.0 1.5 0.0 0.0
24 2007 0.0 0.0 0.0 0.0 1.9 5.9 5.8 5.6 3.7 0.7 0.0 0.0
25 2008 0.0 0.0 0.0 0.0 1.1 5.9 6.0 6.0 4.4 1.8 0.0 0.0
26 2009 0.0 0.0 0.0 0.0 1.1 7.3 6.4 5.3 4.2 1.6 0.0 0.0
15 2010 0.0 0.0 0.0 0.0 2.2 6.0 6.3 0.7 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 21 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 4126
23-Jul-02 4126
24-Jul-02 3965
25-Jul-02 3584
26-Jul-02 2886
27-Jul-02 1944
28-Jul-02 1756
29-Jul-02 1562
30-Jul-02 1602
31-Jul-02 1660
1-Aug-02 1868
2-Aug-02 1048
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 2108
10-Aug-02 2333
11-Aug-02 2326
12-Aug-02 1990
13-Aug-02 2123
14-Aug-02 2416
15-Aug-02 2400
16-Aug-02 3078
17-Aug-02 3131
18-Aug-02 3117
19-Aug-02 3239
20-Aug-02 2987
21-Aug-02 2869
22-Aug-02 2647
23-Aug-02 2618
24-Aug-02 2752
25-Aug-02 2648
26-Aug-02 2629
27-Aug-02 2130
28-Aug-02 1596
29-Aug-02 1611
30-Aug-02 1442
31-Aug-02 1478
1-Sep-02 1662
2-Sep-02 1467
3-Sep-02 1219
4-Sep-02 1332
5-Sep-02 1200
6-Sep-02 1325
7-Sep-02 1378
8-Sep-02 1421
9-Sep-02 1705
10-Sep-02 1655
11-Sep-02 2178
12-Sep-02 2258
13-Sep-02 2254
14-Sep-02 2489
15-Sep-02 1101
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21-Sep-02 1120
22-Sep-02 835
23-Sep-02 861
24-Sep-02 799
25-Sep-02 790
26-Sep-02 660
27-Sep-02 630
28-Sep-02 552
29-Sep-02 347
30-Sep-02 390
1-Oct-02 247
2-Oct-02 303
3-Oct-02 320
4-Oct-02 534
5-Oct-02 568
6-Oct-02 412
7-Oct-02 343
8-Oct-02 141
9-Oct-02 103
10-Oct-02 211
11-Oct-02 312
12-Oct-02 307
13-Oct-02 193
14-Oct-02 46
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