Site ID: 397 Lat. 57.7024 Russia Nizhegorodskaya
River: Vetluga Long. 45.3262
Site name: Varnavino Contributing area: 24715 km2 Ratio to Comparison Station: 0.88
Latest measurement: 17-Jul-10 Mean annual runoff: 99 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 72.9 mm
Latest M/C ratio: 1.10 Seven day total: 0.1 mm
Estimated current discharge: 3 m3/sec Percent of mean 7-day total: 125.0 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 999 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 966 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
8 2002 no data no data no data no data no data no data no data 0.3 0.3 3.1 2.7 2.0
157 2003 13.7 22.1 43.0 6.0 54.4 1.9 0.4 0.4 0.3 0.4 0.7 13.5
99 2004 1.7 15.1 8.2 8.7 57.2 1.0 0.4 0.4 0.9 0.4 0.8 4.4
122 2005 9.1 7.2 5.5 36.6 61.1 0.3 0.0 0.4 0.3 0.4 0.6 0.4
74 2006 15.3 10.3 24.8 8.6 12.9 0.3 0.4 0.4 0.3 0.4 0.0 0.0
34 2007 2.0 0.3 3.1 17.5 7.0 0.3 0.4 0.4 0.3 0.4 0.3 2.3
123 2008 4.2 11.3 25.9 46.5 32.1 0.3 0.4 0.4 0.3 0.4 0.3 0.4
86 2009 1.1 1.6 14.4 20.8 36.7 0.7 0.4 0.4 0.3 0.4 8.6 0.4
73 2010 0.4 5.7 31.6 11.9 22.7 0.3 0.2 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 99 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 3
23-Jul-02 3
24-Jul-02 3
25-Jul-02 3
26-Jul-02 3
27-Jul-02 3
28-Jul-02 3
29-Jul-02 3
30-Jul-02 3
31-Jul-02 3
1-Aug-02 3
2-Aug-02
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 3
10-Aug-02 3
11-Aug-02 3
12-Aug-02 3
13-Aug-02 3
14-Aug-02 3
15-Aug-02 3
16-Aug-02 3
17-Aug-02 3
18-Aug-02 3
19-Aug-02 3
20-Aug-02 3
21-Aug-02 3
22-Aug-02 3
23-Aug-02 3
24-Aug-02 3
25-Aug-02 3
26-Aug-02 3
27-Aug-02 3
28-Aug-02 3
29-Aug-02 3
30-Aug-02 3
31-Aug-02 3
1-Sep-02 3
2-Sep-02 3
3-Sep-02 3
4-Sep-02 3
5-Sep-02 3
6-Sep-02 3
7-Sep-02 3
8-Sep-02 3
9-Sep-02 3
10-Sep-02 3
11-Sep-02 3
12-Sep-02 3
13-Sep-02 3
14-Sep-02 3
15-Sep-02 3
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 3
22-Sep-02 3
23-Sep-02 3
24-Sep-02 3
25-Sep-02 3
26-Sep-02 3
27-Sep-02 3
28-Sep-02 3
29-Sep-02 3
30-Sep-02 3
1-Oct-02 3
2-Oct-02 3
3-Oct-02 3
4-Oct-02 3
5-Oct-02 3
6-Oct-02 3
7-Oct-02 3
8-Oct-02 3
9-Oct-02 3
10-Oct-02 3
11-Oct-02 3
12-Oct-02 3
13-Oct-02 3
14-Oct-02 3
15-Oct-02 11
16-Oct-02 3
17-Oct-02 29
18-Oct-02 3
19-Oct-02 3
20-Oct-02 3
21-Oct-02 3
22-Oct-02 3
23-Oct-02 3
24-Oct-02 85
25-Oct-02 169
26-Oct-02 284
27-Oct-02 199
28-Oct-02 45
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
16-Nov-02 3
17-Nov-02 3
18-Nov-02 3
19-Nov-02 3
20-Nov-02 56
21-Nov-02 42
22-Nov-02 14
23-Nov-02 87
24-Nov-02 3
25-Nov-02 24
26-Nov-02 3
27-Nov-02 3
28-Nov-02 75
29-Nov-02 177
30-Nov-02 214
1-Dec-02 261
2-Dec-02 214
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 3
17-Jan-03 3
18-Jan-03 3
19-Jan-03 3
20-Jan-03 561
21-Jan-03 635
22-Jan-03 458
23-Jan-03 573
24-Jan-03 354
25-Jan-03 239
26-Jan-03 185
27-Jan-03 166
28-Jan-03 149
29-Jan-03 172
30-Jan-03 253
31-Jan-03 116
1-Feb-03 120
2-Feb-03 193
3-Feb-03 147
4-Feb-03 164
5-Feb-03 13
6-Feb-03 91
7-Feb-03 148
8-Feb-03 253
9-Feb-03 403
10-Feb-03 420
11-Feb-03 411
12-Feb-03 395
13-Feb-03 343
14-Feb-03 352
15-Feb-03 263
16-Feb-03 266
17-Feb-03 146
18-Feb-03 121
19-Feb-03 105
20-Feb-03 90
21-Feb-03 162
22-Feb-03 169
23-Feb-03 167
24-Feb-03 92
25-Feb-03 144
26-Feb-03 335
27-Feb-03 416
28-Feb-03 391
1-Mar-03 365
2-Mar-03 289
3-Mar-03 331
4-Mar-03 548
5-Mar-03 470
6-Mar-03 367
7-Mar-03 384
8-Mar-03 227
9-Mar-03 443
10-Mar-03 408
11-Mar-03 398
12-Mar-03 338
13-Mar-03 172
14-Mar-03 416
15-Mar-03 394
16-Mar-03 364
17-Mar-03 369
18-Mar-03 301
19-Mar-03 261
20-Mar-03 410
21-Mar-03 413
22-Mar-03 471
23-Mar-03 631
24-Mar-03 555
25-Mar-03 332
26-Mar-03 329
27-Mar-03 408
28-Mar-03 463
29-Mar-03 680
30-Mar-03 598
31-Mar-03 162
1-Apr-03 147
2-Apr-03 3
3-Apr-03 3
4-Apr-03 3
5-Apr-03 3
6-Apr-03 3
7-Apr-03 3
8-Apr-03 3
9-Apr-03 3
10-Apr-03 11
11-Apr-03 80
12-Apr-03 153
13-Apr-03 81
14-Apr-03 3
15-Apr-03 3
16-Apr-03 3
17-Apr-03 3
18-Apr-03 3
19-Apr-03 3
20-Apr-03 3
21-Apr-03 3
22-Apr-03 3
23-Apr-03 18
24-Apr-03 29
25-Apr-03 13
26-Apr-03 154
27-Apr-03 153
28-Apr-03 234
29-Apr-03 281
30-Apr-03 314
1-May-03 442
2-May-03 127
3-May-03 156
4-May-03 128
5-May-03 230
6-May-03 554
7-May-03 745
8-May-03 677
9-May-03 621
10-May-03 863
11-May-03 650
12-May-03 724
13-May-03 745
14-May-03 586
15-May-03 761
16-May-03 935
17-May-03 929
18-May-03 744
19-May-03 693