Site ID: 319 Lat. 61.6261 Russia Sakha (Yakutiya)
River: Aldan Long. 135.4641
Site name: Okhotskiy Perevoz Contributing area: 507117 km2 Ratio to Comparison Station: 17.96
Latest measurement: 30-Jul-10 Mean annual runoff: 19 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 13.5 mm
Latest M/C ratio: 1.31 Seven day total: 1.3 mm
Estimated current discharge: 841 m3/sec Percent of mean 7-day total: 129.9 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 1711 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1657 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
3 2002 no data no data no data no data no data no data no data 1.5 1.0 0.3 0.0 0.0
10 2003 0.0 0.0 0.0 0.1 0.5 3.5 2.8 1.0 1.6 0.2 0.0 0.0
9 2004 0.0 0.0 0.1 0.7 1.0 3.4 2.0 1.2 0.4 0.0 0.0 0.0
21 2005 0.0 0.0 0.0 0.6 3.0 4.6 2.7 4.1 5.0 1.0 0.0 0.0
21 2006 0.0 0.0 0.0 0.1 2.3 5.7 4.6 3.4 4.0 1.2 0.0 0.0
25 2007 0.0 0.0 0.1 1.1 2.9 5.8 4.6 5.5 3.8 0.7 0.0 0.0
22 2008 0.0 0.0 0.1 0.2 3.0 4.7 4.2 5.1 3.7 1.2 0.0 0.0
24 2009 0.0 0.0 0.1 0.6 2.9 6.7 4.9 4.6 3.0 1.4 0.0 0.0
14 2010 0.0 0.0 0.0 0.2 2.8 5.2 5.1 0.2 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 19 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-02 376
23-Jul-02 376
24-Jul-02 447
25-Jul-02 345
26-Jul-02 364
27-Jul-02 415
28-Jul-02 360
29-Jul-02 337
30-Jul-02 244
31-Jul-02 144
1-Aug-02 139
2-Aug-02 241
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 174
10-Aug-02 270
11-Aug-02 230
12-Aug-02 178
13-Aug-02 311
14-Aug-02 345
15-Aug-02 476
16-Aug-02 529
17-Aug-02 529
18-Aug-02 508
19-Aug-02 472
20-Aug-02 405
21-Aug-02 284
22-Aug-02 210
23-Aug-02 185
24-Aug-02 383
25-Aug-02 526
26-Aug-02 533
27-Aug-02 502
28-Aug-02 433
29-Aug-02 376
30-Aug-02 400
31-Aug-02 457
1-Sep-02 256
2-Sep-02 210
3-Sep-02 220
4-Sep-02 239
5-Sep-02 264
6-Sep-02 267
7-Sep-02 148
8-Sep-02 152
9-Sep-02 376
10-Sep-02 296
11-Sep-02 350
12-Sep-02 406
13-Sep-02 329
14-Sep-02 493
15-Sep-02 657
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21-Sep-02 3
22-Sep-02 3
23-Sep-02 3
24-Sep-02 13
25-Sep-02 156
26-Sep-02 116
27-Sep-02 156
28-Sep-02 117
29-Sep-02 185
30-Sep-02 209
1-Oct-02 130
2-Oct-02 85
3-Oct-02 3
4-Oct-02 41
5-Oct-02 148
6-Oct-02 186
7-Oct-02 230
8-Oct-02 200
9-Oct-02 223
10-Oct-02 92
11-Oct-02 170
12-Oct-02 179
13-Oct-02 123
14-Oct-02 32
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