Site ID: 534 Lat. 63.8819 USA Alaska
River: Yukon Long. -159.0973
Site name: Johnson Camp Contributing area: 724808 km2 Ratio to Comparison Station: 25.67
Latest measurement: 17-Jul-10 Mean annual runoff: 15 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 6.0 mm
Latest M/C ratio: 1.32 Seven day total: 0.8 mm
Estimated current discharge: 847 m3/sec Percent of mean 7-day total: 107.3 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 1548 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1560 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 2.2 2.1 0.9 0.0 0.0
14 2003 0.0 0.0 0.0 0.0 0.7 3.4 2.7 2.9 2.3 1.4 0.2 0.0
16 2004 0.2 0.5 0.4 0.0 2.7 3.1 3.2 2.9 1.9 0.2 0.0 0.4
15 2005 0.3 0.1 0.2 0.0 2.2 3.3 3.2 2.6 1.9 1.3 0.0 0.0
16 2006 0.0 0.0 0.0 0.0 1.2 4.5 3.7 2.7 2.9 1.2 0.0 0.0
13 2007 0.0 0.0 0.0 0.0 1.1 2.9 2.8 2.6 2.3 0.9 0.0 0.0
14 2008 0.0 0.0 0.0 0.0 1.7 3.3 3.0 2.8 2.5 0.6 0.0 0.0
15 2009 0.0 0.0 0.0 0.0 2.1 4.0 3.5 2.5 2.1 0.8 0.0 0.0
6 2010 0.0 0.0 0.0 0.0 1.4 2.6 2.0 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 15 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-02 755
23-Jul-02 755
24-Jul-02 677
25-Jul-02 759
26-Jul-02 745
27-Jul-02 721
28-Jul-02 617
29-Jul-02 709
30-Jul-02 766
31-Jul-02 698
1-Aug-02 913
2-Aug-02 648
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 347
10-Aug-02 617
11-Aug-02 728
12-Aug-02 834
13-Aug-02 880
14-Aug-02 912
15-Aug-02 821
16-Aug-02 708
17-Aug-02 638
18-Aug-02 480
19-Aug-02 475
20-Aug-02 545
21-Aug-02 667
22-Aug-02 750
23-Aug-02 879
24-Aug-02 790
25-Aug-02 835
26-Aug-02 869
27-Aug-02 865
28-Aug-02 898
29-Aug-02 889
30-Aug-02 738
31-Aug-02 769
1-Sep-02 768
2-Sep-02 755
3-Sep-02 883
4-Sep-02 801
5-Sep-02 738
6-Sep-02 731
7-Sep-02 679
8-Sep-02 650
9-Sep-02 754
10-Sep-02 731
11-Sep-02 687
12-Sep-02 662
13-Sep-02 543
14-Sep-02 489
15-Sep-02 465
16-Sep-02 447
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 803
22-Sep-02 880
23-Sep-02 761
24-Sep-02 703
25-Sep-02 681
26-Sep-02 627
27-Sep-02 563
28-Sep-02 589
29-Sep-02 607
30-Sep-02 591
1-Oct-02 766
2-Oct-02 733
3-Oct-02 783
4-Oct-02 703
5-Oct-02 622
6-Oct-02 674
7-Oct-02 645
8-Oct-02 594
9-Oct-02 616
10-Oct-02 505
11-Oct-02 261
12-Oct-02 108
13-Oct-02 131
14-Oct-02 23
15-Oct-02 112
16-Oct-02 220
17-Oct-02 82
18-Oct-02 142
19-Oct-02 3
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1-Nov-02 3
2-Nov-02 139
3-Nov-02 154
4-Nov-02 9
5-Nov-02 3
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