Site ID: 2090 Lat. 35.8561 China Shandong
River: Yellow (Huang He) Long. 115.7919
Site name: Echeng Contributing area: 877570 km2 Ratio to Comparison Station: 31.08
Latest measurement: 6-Sep-11 Mean annual runoff: 4 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 0.8 mm
Latest M/C ratio: 1.10 Seven day total: 0.0 mm
Estimated current discharge: 3 m3/sec Percent of mean 7-day total: 20.8 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 1463 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1542 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
2 2002 no data no data no data no data no data no data no data 0.7 0.5 0.4 0.2 0.0
7 2003 0.0 0.0 0.0 0.4 0.5 0.3 0.2 0.1 0.6 1.4 2.3 1.1
7 2004 0.3 0.1 0.5 1.0 0.9 0.8 0.5 0.8 1.5 0.4 0.1 0.0
3 2005 0.0 0.0 0.0 0.5 0.4 0.5 0.3 0.3 0.1 0.8 0.0 0.0
5 2006 0.0 0.1 0.6 0.8 0.7 1.1 0.8 0.5 0.3 0.1 0.0 0.0
2 2007 0.0 0.0 0.0 0.3 0.2 0.3 0.9 0.5 0.3 0.0 0.0 0.0
2 2008 0.0 0.0 0.0 0.1 0.2 0.3 0.1 0.4 0.4 0.0 0.0 0.0
1 2009 0.0 0.0 0.0 0.0 0.0 0.1 0.4 0.4 0.2 0.2 0.0 0.0
1 2010 0.0 0.0 0.0 0.0 0.1 0.2 0.1 0.2 0.1 0.1 0.0 0.0
Mean Annual Runoff (mm): 4 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-02 380
23-Jul-02 380
24-Jul-02 250
25-Jul-02 179
26-Jul-02 71
27-Jul-02 90
28-Jul-02 208
29-Jul-02 224
30-Jul-02 217
31-Jul-02 217
1-Aug-02 85
2-Aug-02 85
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 146
10-Aug-02 255
11-Aug-02 305
12-Aug-02 305
13-Aug-02 329
14-Aug-02 312
15-Aug-02 260
16-Aug-02 238
17-Aug-02 240
18-Aug-02 264
19-Aug-02 273
20-Aug-02 278
21-Aug-02 313
22-Aug-02 287
23-Aug-02 175
24-Aug-02 256
25-Aug-02 281
26-Aug-02 318
27-Aug-02 359
28-Aug-02 302
29-Aug-02 363
30-Aug-02 411
31-Aug-02 372
1-Sep-02 459
2-Sep-02 462
3-Sep-02 440
4-Sep-02 455
5-Sep-02 353
6-Sep-02 313
7-Sep-02 64
8-Sep-02 9
9-Sep-02 3
10-Sep-02 3
11-Sep-02 3
12-Sep-02 48
13-Sep-02 21
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-02 187
22-Sep-02 187
23-Sep-02 171
24-Sep-02 220
25-Sep-02 297
26-Sep-02 276
27-Sep-02 230
28-Sep-02 219
29-Sep-02 174
30-Sep-02 104
1-Oct-02 74
2-Oct-02 136
3-Oct-02 137
4-Oct-02 113
5-Oct-02 101
6-Oct-02 154
7-Oct-02 120
8-Oct-02 153
9-Oct-02 109
10-Oct-02 136
11-Oct-02 84
12-Oct-02 65
13-Oct-02 25
14-Oct-02 31
15-Oct-02 4
16-Oct-02 9
17-Oct-02 18
18-Oct-02 96
19-Oct-02 147
20-Oct-02 101
21-Oct-02 145
22-Oct-02 164
23-Oct-02 111
24-Oct-02 178
25-Oct-02 267
26-Oct-02 98
27-Oct-02 279
28-Oct-02 264
29-Oct-02 238
30-Oct-02 357
31-Oct-02 261
1-Nov-02 234
2-Nov-02 296
3-Nov-02 160
4-Nov-02 157
5-Nov-02 95
6-Nov-02 102
7-Nov-02 87
8-Nov-02 80
9-Nov-02 114
10-Nov-02 125
11-Nov-02 167
12-Nov-02 200
13-Nov-02 174
14-Nov-02 126
15-Nov-02 85
16-Nov-02 36
17-Nov-02 52
18-Nov-02 81
19-Nov-02 80
20-Nov-02 3
21-Nov-02 3
22-Nov-02 3
23-Nov-02 3
24-Nov-02 3
25-Nov-02 3
26-Nov-02 3
27-Nov-02 51
28-Nov-02 3
29-Nov-02 3
30-Nov-02 3
1-Dec-02 3
2-Dec-02 3
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-02 136
22-Dec-02 77
23-Dec-02 25
24-Dec-02 3
25-Dec-02 8
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 3
21-Jan-03 3
22-Jan-03 3
23-Jan-03 3
24-Jan-03 3
25-Jan-03 3
26-Jan-03 3
27-Jan-03 3
28-Jan-03 3
29-Jan-03 3
30-Jan-03 3
31-Jan-03 3
1-Feb-03 3
2-Feb-03 3
3-Feb-03 3
4-Feb-03 3
5-Feb-03 3
6-Feb-03 3
7-Feb-03 3
8-Feb-03 3
9-Feb-03 3
10-Feb-03 3
11-Feb-03 3
12-Feb-03 3
13-Feb-03 3
14-Feb-03 3
15-Feb-03 3
16-Feb-03 3
17-Feb-03 3
18-Feb-03 3
19-Feb-03 3
20-Feb-03 3
21-Feb-03 3
22-Feb-03 3
23-Feb-03 3
24-Feb-03 3
25-Feb-03 25
26-Feb-03 18
27-Feb-03 69
28-Feb-03 98
1-Mar-03 3
2-Mar-03 3
3-Mar-03 3
4-Mar-03 3
5-Mar-03 3
6-Mar-03 3
7-Mar-03 3
8-Mar-03 3
9-Mar-03 3
10-Mar-03 63
11-Mar-03 66
12-Mar-03 77
13-Mar-03 59
14-Mar-03 43
15-Mar-03 82
16-Mar-03 3
17-Mar-03 3
18-Mar-03 3
19-Mar-03 3
20-Mar-03 3
21-Mar-03 3
22-Mar-03 3
23-Mar-03 3
24-Mar-03 3
25-Mar-03 21
26-Mar-03 3
27-Mar-03 3
28-Mar-03 3
29-Mar-03 3
30-Mar-03 3
31-Mar-03 3
1-Apr-03 3
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 58
9-Apr-03 58
10-Apr-03 101
11-Apr-03 111
12-Apr-03 154
13-Apr-03 136
14-Apr-03 157
15-Apr-03 162
16-Apr-03 67
17-Apr-03 175
18-Apr-03 214
19-Apr-03 44
20-Apr-03 109
21-Apr-03 376
22-Apr-03 158
23-Apr-03 172
24-Apr-03 172
25-Apr-03 123
26-Apr-03 268
27-Apr-03 272
28-Apr-03 358
29-Apr-03 92