Site ID: 1004 Lat. 36.4934 USA Tennessee
River: Holston Long. -82.1853
Site name: Bristol Contributing area: 2098 km2 Ratio to Comparison Station: 0.07
Latest measurement: 29-Jul-10 Mean annual runoff: 306 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 29.0 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: 101.1 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 339 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 313 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
395 2002 no data no data no data no data no data no data no data 28.4 180.2 154.9 24.6 6.8
667 2003 12.0 3.8 13.5 19.6 39.5 101.2 72.2 159.9 113.5 87.8 30.4 13.4
1180 2004 11.5 14.5 5.1 44.5 108.9 113.7 125.5 237.3 190.4 175.6 133.9 19.1
87 2005 39.2 3.8 4.2 4.1 4.2 9.3 1.7 4.1 4.1 4.2 4.0 4.2
56 2006 4.2 3.7 3.4 4.1 5.4 4.1 4.2 4.2 17.9 4.2 0.0 0.0
52 2007 4.2 3.8 4.2 4.1 4.2 4.1 5.1 4.2 4.1 4.2 4.1 5.1
50 2008 4.2 4.0 4.2 4.1 4.2 4.1 4.2 4.2 4.1 4.2 4.1 4.2
50 2009 4.2 3.8 4.2 4.1 4.2 4.1 4.2 4.2 4.1 4.2 4.1 4.2
29 2010 4.2 3.7 4.4 4.1 4.1 4.1 4.2 0.1 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 306 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 56
25-Jul-02 3
26-Jul-02 98
27-Jul-02 153
28-Jul-02 20
29-Jul-02 17
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-02 245
10-Aug-02 3
11-Aug-02 66
12-Aug-02 11
13-Aug-02 3
14-Aug-02 116
15-Aug-02 66
16-Aug-02 88
17-Aug-02 3
18-Aug-02 6
19-Aug-02 3
20-Aug-02 3
21-Aug-02 22
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 19
29-Aug-02 3
30-Aug-02 3
31-Aug-02 3
1-Sep-02 3
2-Sep-02 3
3-Sep-02 79
4-Sep-02 68
5-Sep-02 91
6-Sep-02 60
7-Sep-02 3
8-Sep-02 169
9-Sep-02 84
10-Sep-02 402
11-Sep-02 292
12-Sep-02 227
13-Sep-02 303
14-Sep-02 170
15-Sep-02 262
16-Sep-02 220
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02
22-Sep-02 653
23-Sep-02 653
24-Sep-02 443
25-Sep-02 175
26-Sep-02 3
27-Sep-02 3
28-Sep-02 3
29-Sep-02 3
30-Sep-02 3
1-Oct-02 121
2-Oct-02 175
3-Oct-02 22
4-Oct-02 83
5-Oct-02 57
6-Oct-02 55
7-Oct-02 83
8-Oct-02 92
9-Oct-02 137
10-Oct-02 226
11-Oct-02 232
12-Oct-02 185
13-Oct-02 138
14-Oct-02 42
15-Oct-02 148
16-Oct-02 159
17-Oct-02 185
18-Oct-02 210
19-Oct-02 185
20-Oct-02 67
21-Oct-02 89
22-Oct-02 3
23-Oct-02 3
24-Oct-02 3
25-Oct-02 3
26-Oct-02 221
27-Oct-02 108
28-Oct-02 232
29-Oct-02 175
30-Oct-02 170
31-Oct-02 152
1-Nov-02 94
2-Nov-02 3
3-Nov-02 3
4-Nov-02 3
5-Nov-02 5
6-Nov-02 87
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 51
16-Nov-02 41
17-Nov-02 74
18-Nov-02 61
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 80
30-Nov-02 32
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 53
21-Dec-02 3
22-Dec-02 14
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 6
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-03 191
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 3
26-Feb-03 3
27-Feb-03 3
28-Feb-03 3
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 51
10-Mar-03 11
11-Mar-03 3
12-Mar-03 3
13-Mar-03 3
14-Mar-03 3
15-Mar-03 3
16-Mar-03 3
17-Mar-03 11
18-Mar-03 28
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 3
26-Mar-03 3
27-Mar-03 15
28-Mar-03 90
29-Mar-03 42
30-Mar-03 3
31-Mar-03 3
1-Apr-03 3
2-Apr-03 3
3-Apr-03 3
4-Apr-03 41
5-Apr-03 3
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 3
13-Apr-03 3
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-03 127
21-Apr-03 110
22-Apr-03 41
23-Apr-03 3
24-Apr-03 5
25-Apr-03 3
26-Apr-03 3
27-Apr-03 3
28-Apr-03 3
29-Apr-03 72
30-Apr-03 3
1-May-03 3
2-May-03 3
3-May-03 3
4-May-03 3
5-May-03 3
6-May-03 3
7-May-03 3
8-May-03 99
9-May-03 87
10-May-03 3
11-May-03 3
12-May-03 3
13-May-03 3
14-May-03 74
15-May-03 74
16-May-03 3
17-May-03 3
18-May-03 3
19-May-03 3
20-May-03 3
21-May-03 3
22-May-03 67
23-May-03 126
24-May-03 100
25-May-03 3
26-May-03 31
27-May-03 3
28-May-03 3
29-May-03 132
30-May-03 101
31-May-03 3
1-Jun-03 3
2-Jun-03 40
3-Jun-03 109
4-Jun-03 214
5-Jun-03 264
6-Jun-03 142
7-Jun-03 3
8-Jun-03 3
9-Jun-03 3
10-Jun-03 3
11-Jun-03 25
12-Jun-03 26
13-Jun-03 88
14-Jun-03 296
15-Jun-03 109
16-Jun-03 47
17-Jun-03 47
18-Jun-03 3
19-Jun-03 3
20-Jun-03 114
21-Jun-03 283
22-Jun-03 283
23-Jun-03 47
24-Jun-03 3
25-Jun-03 76
26-Jun-03 3
27-Jun-03 114
28-Jun-03 97
29-Jun-03 3
30-Jun-03 3
1-Jul-03 3
2-Jul-03 3
3-Jul-03 112
4-Jul-03 315
5-Jul-03 189