Site ID: 2095 Lat. 32.3422 China Anhui
River: Chi Long. 117.8032
Site name: Chihe Contributing area: 2002 km2 Ratio to Comparison Station: 0.07
Latest measurement: 6-Sep-11 Mean annual runoff: 2132 mm (2003-2009)
Hydrologic status: 1 Low flow or ice Total runoff this year (2010): 2344.5 mm
Latest M/C ratio: 1.10 Seven day total: 1.0 mm
Estimated current discharge: 3 m3/sec Percent of mean 7-day total: 100.0 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 1623 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 1636 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
133 2002 no data no data no data no data no data no data no data 3.7 34.2 63.8 5.0 26.0
2219 2003 5.2 95.0 193.1 77.0 482.5 1058.9 215.3 4.4 4.3 61.9 16.7 4.4
933 2004 12.5 4.2 4.9 4.3 257.9 615.9 11.0 4.4 4.3 4.4 4.3 4.4
1166 2005 4.4 4.0 4.4 29.9 40.1 524.4 286.8 4.4 5.2 17.1 20.1 225.6
3320 2006 181.9 322.4 348.3 250.4 561.5 1458.3 150.2 4.9 17.4 24.7 0.0 0.0
2416 2007 73.0 80.8 319.5 169.0 409.1 753.1 107.9 4.4 143.2 86.7 174.8 94.7
2747 2008 85.5 434.6 141.9 437.4 413.5 1014.6 144.4 4.4 4.3 16.8 25.7 24.3
2120 2009 8.1 74.1 190.6 91.6 125.0 1001.0 67.5 4.4 13.1 4.7 285.1 254.8
2344 2010 31.3 137.3 390.3 293.0 116.9 1088.0 219.7 4.4 4.3 23.3 7.9 28.2
Mean Annual Runoff (mm): 2132 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
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02
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 10
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 19
4-Sep-02 98
5-Sep-02 82
6-Sep-02 3
7-Sep-02 10
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-02 116
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 72
22-Sep-02 3
23-Sep-02 104
24-Sep-02 104
25-Sep-02 84
26-Sep-02 54
27-Sep-02 3
28-Sep-02 3
29-Sep-02 3
30-Sep-02 3
1-Oct-02 21
2-Oct-02 125
3-Oct-02 151
4-Oct-02 113
5-Oct-02 109
6-Oct-02 3
7-Oct-02 13
8-Oct-02 3
9-Oct-02 50
10-Oct-02 164
11-Oct-02 67
12-Oct-02 116
13-Oct-02 35
14-Oct-02 54
15-Oct-02 36
16-Oct-02 66
17-Oct-02 79
18-Oct-02 37
19-Oct-02 63
20-Oct-02 3
21-Oct-02 3
22-Oct-02 55
23-Oct-02 3
24-Oct-02 3
25-Oct-02 35
26-Oct-02 3
27-Oct-02 3
28-Oct-02 53
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 4
16-Nov-02 3
17-Nov-02 3
18-Nov-02 3
19-Nov-02 3
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 3
28-Nov-02 3
29-Nov-02 3
30-Nov-02 19
1-Dec-02 62
2-Dec-02 21
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 6
20-Dec-02 56
21-Dec-02 121
22-Dec-02 255
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 21
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 6
2-Feb-03 3
3-Feb-03 3
4-Feb-03 3
5-Feb-03 3
6-Feb-03 7
7-Feb-03 3
8-Feb-03 3
9-Feb-03 207
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-03 138
18-Feb-03 188
19-Feb-03 172
20-Feb-03 61
21-Feb-03 107
22-Feb-03 76
23-Feb-03 86
24-Feb-03 221
25-Feb-03 180
26-Feb-03 167
27-Feb-03 226
28-Feb-03 316
1-Mar-03 266
2-Mar-03 463
3-Mar-03 537
4-Mar-03 477
5-Mar-03 379
6-Mar-03 170
7-Mar-03 170
8-Mar-03 20
9-Mar-03 167
10-Mar-03 192
11-Mar-03 164
12-Mar-03 282
13-Mar-03 9
14-Mar-03 3
15-Mar-03 3
16-Mar-03 3
17-Mar-03 3
18-Mar-03 3
19-Mar-03 3
20-Mar-03 128
21-Mar-03 3
22-Mar-03 3
23-Mar-03 3
24-Mar-03 3
25-Mar-03 146
26-Mar-03 138
27-Mar-03 184
28-Mar-03 238
29-Mar-03 124
30-Mar-03 155
31-Mar-03 35
1-Apr-03 32
2-Apr-03 121
3-Apr-03 3
4-Apr-03 15
5-Apr-03 88
6-Apr-03 3
7-Apr-03 3
8-Apr-03 3
9-Apr-03 3
10-Apr-03 3
11-Apr-03 3
12-Apr-03 34
13-Apr-03 161
14-Apr-03 283
15-Apr-03 251
16-Apr-03 130
17-Apr-03 91
18-Apr-03 145
19-Apr-03 43
20-Apr-03 41
21-Apr-03 214
22-Apr-03 67
23-Apr-03 19
24-Apr-03 3
25-Apr-03 3
26-Apr-03 3
27-Apr-03 3
28-Apr-03 3
29-Apr-03 3
30-Apr-03 3
1-May-03 71
2-May-03 292
3-May-03 276 </