Site ID: 533 Lat. 61.9594 USA Alaska
River: Yukon Long. -162.4439
Site name: Marshall Contributing area: 783787 km2 Ratio to Comparison Station: 27.76
Latest measurement: 17-Jul-10 Mean annual runoff: 22 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 10.0 mm
Latest M/C ratio: 1.37 Seven day total: 0.9 mm
Estimated current discharge: 1078 m3/sec Percent of mean 7-day total: 94.9 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 3471 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 3339 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 2.7 2.7 2.3 0.1 0.0
19 2003 0.0 0.0 0.0 0.0 1.1 4.5 3.4 3.3 3.7 2.1 0.5 0.0
22 2004 0.0 0.0 0.0 0.0 3.0 5.9 4.1 3.7 2.6 2.6 0.0 0.0
29 2005 0.0 0.0 0.0 0.0 5.9 8.5 4.4 3.9 3.5 2.6 0.1 0.0
25 2006 0.0 0.0 0.0 0.0 1.6 8.0 4.6 3.7 3.7 3.2 0.0 0.0
16 2007 0.0 0.0 0.0 0.0 1.7 3.5 3.3 3.4 3.4 1.0 0.0 0.0
19 2008 0.0 0.0 0.0 0.0 2.4 5.0 3.7 3.9 3.6 0.3 0.0 0.0
26 2009 0.0 0.0 0.0 0.0 3.1 8.2 5.2 3.5 3.2 2.4 0.0 0.0
10 2010 0.0 0.0 0.0 0.0 3.0 4.5 2.5 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 22 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-02 978
23-Jul-02 978
24-Jul-02 847
25-Jul-02 818
26-Jul-02 891
27-Jul-02 961
28-Jul-02 964
29-Jul-02 1183
30-Jul-02 1235
31-Jul-02 1318
1-Aug-02 1393
2-Aug-02 1374
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 741
10-Aug-02 877
11-Aug-02 896
12-Aug-02 946
13-Aug-02 982
14-Aug-02 950
15-Aug-02 930
16-Aug-02 908
17-Aug-02 815
18-Aug-02 851
19-Aug-02 622
20-Aug-02 606
21-Aug-02 712
22-Aug-02 764
23-Aug-02 980
24-Aug-02 1047
25-Aug-02 1111
26-Aug-02 1099
27-Aug-02 1138
28-Aug-02 1165
29-Aug-02 1155
30-Aug-02 1132
31-Aug-02 1175
1-Sep-02 1160
2-Sep-02 1035
3-Sep-02 1052
4-Sep-02 1145
5-Sep-02 1067
6-Sep-02 941
7-Sep-02 888
8-Sep-02 667
9-Sep-02 794
10-Sep-02 950
11-Sep-02 864
12-Sep-02 922
13-Sep-02 726
14-Sep-02 668
15-Sep-02 704
16-Sep-02 293
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1030
22-Sep-02 993
23-Sep-02 1019
24-Sep-02 1057
25-Sep-02 1040
26-Sep-02 1196
27-Sep-02 1148
28-Sep-02 1123
29-Sep-02 1167
30-Sep-02 1085
1-Oct-02 1132
2-Oct-02 1168
3-Oct-02 1170
4-Oct-02 1145
5-Oct-02 1096
6-Oct-02 1082
7-Oct-02 1054
8-Oct-02 1031
9-Oct-02 1024
10-Oct-02 960
11-Oct-02 835
12-Oct-02 777
13-Oct-02 793
14-Oct-02 768
15-Oct-02 952
16-Oct-02 960
17-Oct-02 1061
18-Oct-02 992
19-Oct-02 774
20-Oct-02 492
21-Oct-02 327
22-Oct-02 174
23-Oct-02 141
24-Oct-02 176
25-Oct-02 167
26-Oct-02 285
27-Oct-02 166
28-Oct-02 84
29-Oct-02 3
30-Oct-02 3
31-Oct-02 3
1-Nov-02 3
2-Nov-02 22
3-Nov-02 190
4-Nov-02 164
5-Nov-02 185
6-Nov-02 73
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