Site ID: 403 Lat. 56.1843 Russia Nizhegorodskaya
River: Oka Long. 43.3215
Site name: Gorbatov Contributing area: 242232 km2 Ratio to Comparison Station: 8.58
Latest measurement: 2-Sep-11 Mean annual runoff: 86 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 92.3 mm
Latest M/C ratio: 1.14 Seven day total: 1.4 mm
Estimated current discharge: 691 m3/sec Percent of mean 7-day total: 97.2 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 2571 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 3208 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
28 2002 no data no data no data no data no data no data no data 4.7 5.1 6.2 5.7 5.8
84 2003 6.1 4.9 5.5 7.9 14.0 7.6 7.0 6.8 6.7 6.5 5.0 5.8
88 2004 5.8 5.5 5.8 9.3 9.5 7.4 8.6 7.4 7.0 8.0 7.4 5.9
106 2005 5.8 5.3 5.8 12.6 32.9 7.6 0.6 7.4 6.4 7.6 7.2 6.7
77 2006 5.8 5.3 5.9 9.6 16.2 7.7 6.3 6.6 7.0 6.7 0.0 0.0
82 2007 6.0 5.3 6.5 11.7 7.7 6.5 6.8 6.8 6.4 6.9 5.9 5.5
83 2008 5.8 5.5 6.2 12.3 9.1 6.9 6.2 6.5 6.0 7.0 6.0 5.9
84 2009 5.8 5.3 5.9 10.9 10.7 7.6 7.0 6.3 6.4 6.5 6.0 6.1
92 2010 5.8 5.3 6.0 13.5 10.5 8.0 6.9 6.7 5.8 6.3 5.9 11.6
Mean Annual Runoff (mm): 86 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-02 645
23-Jul-02 645
24-Jul-02 528
25-Jul-02 549
26-Jul-02 561
27-Jul-02 529
28-Jul-02 560
29-Jul-02 529
30-Jul-02 528
31-Jul-02 528
1-Aug-02 528
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 528
10-Aug-02 528
11-Aug-02 533
12-Aug-02 552
13-Aug-02 670
14-Aug-02 587
15-Aug-02 591
16-Aug-02 539
17-Aug-02 528
18-Aug-02 531
19-Aug-02 528
20-Aug-02 548
21-Aug-02 613
22-Aug-02 563
23-Aug-02 528
24-Aug-02 528
25-Aug-02 528
26-Aug-02 528
27-Aug-02 550
28-Aug-02 528
29-Aug-02 528
30-Aug-02 528
31-Aug-02 528
1-Sep-02 598
2-Sep-02 598
3-Sep-02 633
4-Sep-02 694
5-Sep-02 674
6-Sep-02 542
7-Sep-02 528
8-Sep-02 528
9-Sep-02 528
10-Sep-02 528
11-Sep-02 528
12-Sep-02 528
13-Sep-02 528
14-Sep-02 551
15-Sep-02 528
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 528
22-Sep-02 528
23-Sep-02 528
24-Sep-02 604
25-Sep-02 667
26-Sep-02 718
27-Sep-02 659
28-Sep-02 595
29-Sep-02 528
30-Sep-02 528
1-Oct-02 528
2-Oct-02 645
3-Oct-02 612
4-Oct-02 590
5-Oct-02 568
6-Oct-02 528
7-Oct-02 528
8-Oct-02 528
9-Oct-02 528
10-Oct-02 528
11-Oct-02 528
12-Oct-02 557
13-Oct-02 528
14-Oct-02 528
15-Oct-02 529
16-Oct-02 541
17-Oct-02 528
18-Oct-02 528
19-Oct-02 534
20-Oct-02 528
21-Oct-02 528
22-Oct-02 528
23-Oct-02 546
24-Oct-02 528
25-Oct-02 576
26-Oct-02 600
27-Oct-02 550
28-Oct-02 763
29-Oct-02 661
30-Oct-02 632
31-Oct-02 561
1-Nov-02 528
2-Nov-02 534
3-Nov-02 528
4-Nov-02 528
5-Nov-02 528
6-Nov-02 528
7-Nov-02 528
8-Nov-02 528
9-Nov-02 528
10-Nov-02 528
11-Nov-02 528
12-Nov-02 528
13-Nov-02 528
14-Nov-02 528
15-Nov-02 528
16-Nov-02 528
17-Nov-02 528
18-Nov-02 528
19-Nov-02 528
20-Nov-02 528
21-Nov-02 528
22-Nov-02 528
23-Nov-02 528
24-Nov-02 528
25-Nov-02 528
26-Nov-02 528
27-Nov-02 528
28-Nov-02 528
29-Nov-02 528
30-Nov-02 528
1-Dec-02 528
2-Dec-02 528
3-Dec-02 528
4-Dec-02 528
5-Dec-02 528
6-Dec-02 528
7-Dec-02 528
8-Dec-02 528
9-Dec-02 528
10-Dec-02 528
11-Dec-02 528
12-Dec-02 528
13-Dec-02 528
14-Dec-02 528
15-Dec-02 528
16-Dec-02 528
17-Dec-02 528
18-Dec-02 528
19-Dec-02 528
20-Dec-02 528
21-Dec-02 528
22-Dec-02 528
23-Dec-02 528
24-Dec-02 528
25-Dec-02 528
26-Dec-02 528
27-Dec-02 528
28-Dec-02 528
29-Dec-02 528
30-Dec-02 528
31-Dec-02 528
1-Jan-03 528
2-Jan-03 528
3-Jan-03 528
4-Jan-03 528
5-Jan-03 528
6-Jan-03 528
7-Jan-03 528
8-Jan-03 1054
9-Jan-03 731
10-Jan-03 528
11-Jan-03 528
12-Jan-03 528
13-Jan-03 528
14-Jan-03 528
15-Jan-03 528
16-Jan-03 528
17-Jan-03 528
18-Jan-03 528
19-Jan-03 528
20-Jan-03 528
21-Jan-03 528
22-Jan-03 528
23-Jan-03 528
24-Jan-03 528
25-Jan-03 528
26-Jan-03 528
27-Jan-03 528
28-Jan-03 528
29-Jan-03 528
30-Jan-03 528
31-Jan-03 528
1-Feb-03 528
2-Feb-03 528
3-Feb-03 528
4-Feb-03
5-Feb-03
6-Feb-03 528
7-Feb-03 528
8-Feb-03 528
9-Feb-03 528
10-Feb-03 528
11-Feb-03 528
12-Feb-03 528
13-Feb-03 528
14-Feb-03 528
15-Feb-03 528
16-Feb-03 528
17-Feb-03 528
18-Feb-03 528
19-Feb-03 528
20-Feb-03 528
21-Feb-03 528
22-Feb-03 528
23-Feb-03 528
24-Feb-03 528
25-Feb-03 528
26-Feb-03 528
27-Feb-03 528
28-Feb-03 528
1-Mar-03 528
2-Mar-03 528
3-Mar-03
4-Mar-03
5-Mar-03 528
6-Mar-03 528
7-Mar-03 528
8-Mar-03 528
9-Mar-03 528
10-Mar-03 528
11-Mar-03 528
12-Mar-03 528
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16-Mar-03 528
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18-Mar-03 528
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20-Mar-03 528
21-Mar-03 528
22-Mar-03 528
23-Mar-03 528
24-Mar-03 528
25-Mar-03 528
26-Mar-03 528
27-Mar-03 528
28-Mar-03 528
29-Mar-03 528
30-Mar-03 528
31-Mar-03 528
1-Apr-03 528
2-Apr-03 528
3-Apr-03 528
4-Apr-03 528
5-Apr-03 528
6-Apr-03 528
7-Apr-03 528
8-Apr-03 528
9-Apr-03 528
10-Apr-03 528
11-Apr-03 528
12-Apr-03 528
13-Apr-03 528
14-Apr-03 528
15-Apr-03 528
16-Apr-03 528
17-Apr-03 528
18-Apr-03 528
19-Apr-03 627
20-Apr-03 814
21-Apr-03 827
22-Apr-03 932