Site ID: 1968 Lat. 42.7895 Italy 0
River: Ombrone Long. 11.0911
Site name: 0 Contributing area: 3602 km2 Ratio to Comparison Station: 0.05
Latest measurement: 8-Jan-10 Mean annual runoff: 695 mm (2003-2008)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 38 mm 2010
Latest M/C ratio: 1.18 Seven day total: 21 mm
Estimated current discharge: 154 m3/sec Percent of mean 7-day total: 104.2 % (today's value compared to mean for same period, 2003-2007)
Ice-cover determination: 5 yr recurrence flood: 268 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow, 2 = Normal flow, 3 = Flood, 4 = Major Flood 264 m3/sec (from Gumbel Extreme Value analysis)
Comparison Station Information:  Pontelagoscuro (6348800)         Contributing Area:   sq mi 78362 sq km
(Data from this gaging station are used for the calibration to discharge, with an adjustment for different contributing areas)
Notes:
Discharge and runoff, based on satellite remote sensing (NASA AMSR-E data)
(For U.S, sites, nearby ground station discharge may also be shown)
2008-Present
2002-Present
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
319 2002 no data no data no data no data no data no data no data 23.5 43.9 52.0 101.0 98.8
571 2003 91.5 56.6 58.6 47.0 16.7 29.0 24.1 28.5 36.1 49.0 44.9 89.3
435 2004 76.8 56.3 56.2 34.8 11.6 9.9 11.3 12.4 12.3 27.6 60.6 65.5
771 2005 67.3 45.0 69.5 79.1 49.9 36.9 2.7 55.6 89.4 87.2 80.5 107.5
749 2006 74.2 71.6 72.6 71.2 44.4 64.6 69.3 69.2 105.1 106.8 0.0 0.0
818 2007 109.5 71.7 76.2 54.6 38.4 40.6 49.1 62.4 48.8 77.2 81.3 108.4
826 2008 114.4 83.5 77.0 74.8 38.4 51.1 51.3 55.0 59.4 63.9 102.5 54.6
958 2009 44.9 65.3 104.4 103.5 66.8 77.4 67.2 61.4 55.7 84.2 124.7 102.1
38 2010 37.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 9 Standard Deviation: 175
Trend in Annual Runoff (slope):  56.05
Discharge is estimated via a rating equation directly from the remote sensing data (M/C ratio) shown below.
Explanation:   Green line records upwelling microwave emission from a land parcel (ca 10 km x 10 km) near the river; blue line from a parcel centered over the river.
Brown line is their ratio (M/C; 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. For calibration status, see "notes" entry, above.
GoogleEarth View of Measurement Site
1968.jpg
Return
Estimated
Disharge
Data
Date m3/sec
22-Jul-02 36
23-Jul-02 36
24-Jul-02 46
25-Jul-02 34
26-Jul-02 19
27-Jul-02 44
28-Jul-02 52
29-Jul-02 71
30-Jul-02 81
31-Jul-02 67
1-Aug-02 63
2-Aug-02 54
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02
10-Aug-02 54
11-Aug-02 47
12-Aug-02 56
13-Aug-02 62
14-Aug-02 70
15-Aug-02 61
16-Aug-02 56
17-Aug-02 63
18-Aug-02 50
19-Aug-02 48
20-Aug-02 54
21-Aug-02 31
22-Aug-02 28
23-Aug-02 34
24-Aug-02 23
25-Aug-02 20
26-Aug-02 15
27-Aug-02 21
28-Aug-02 3
29-Aug-02 3
30-Aug-02 28
31-Aug-02 39
1-Sep-02 62
2-Sep-02 101
3-Sep-02 89
4-Sep-02 53
5-Sep-02 34
6-Sep-02 27
7-Sep-02 29
8-Sep-02 55
9-Sep-02 70
10-Sep-02 68
11-Sep-02 60
12-Sep-02 37
13-Sep-02 27
14-Sep-02 27
15-Sep-02 38
16-Sep-02 28
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 3
22-Sep-02 8
23-Sep-02 114
24-Sep-02 123
25-Sep-02 163
26-Sep-02 202
27-Sep-02 129
28-Sep-02 120
29-Sep-02 91
30-Sep-02 71
1-Oct-02 79
2-Oct-02 85
3-Oct-02 85
4-Oct-02 94
5-Oct-02 87
6-Oct-02 46
7-Oct-02 49
8-Oct-02 29
9-Oct-02 29
10-Oct-02 30
11-Oct-02 23
12-Oct-02 24
13-Oct-02 48
14-Oct-02 93
15-Oct-02 123
16-Oct-02 108
17-Oct-02 126
18-Oct-02 103
19-Oct-02 97
20-Oct-02 108
21-Oct-02 76
22-Oct-02 85
23-Oct-02 81
24-Oct-02 68
25-Oct-02 64
26-Oct-02 57
27-Oct-02 53
28-Oct-02 52
29-Oct-02 57
30-Oct-02 56
31-Oct-02 51
1-Nov-02 51
2-Nov-02 60
3-Nov-02 100
4-Nov-02 120
5-Nov-02 169
6-Nov-02 205
7-Nov-02 142
8-Nov-02 168
9-Nov-02 152
10-Nov-02 149
11-Nov-02 166
12-Nov-02 157
13-Nov-02 176
14-Nov-02 176
15-Nov-02 193
16-Nov-02 226
17-Nov-02 205
18-Nov-02 200
19-Nov-02 128
20-Nov-02 98
21-Nov-02 82
22-Nov-02 62
23-Nov-02 113
24-Nov-02 135
25-Nov-02 164
26-Nov-02 152
27-Nov-02 130
28-Nov-02 122
29-Nov-02 105
30-Nov-02 110
1-Dec-02 132
2-Dec-02 93
3-Dec-02 112
4-Dec-02 147
5-Dec-02 164
6-Dec-02 161
7-Dec-02 193
8-Dec-02 191
9-Dec-02 162
10-Dec-02 144
11-Dec-02 88
12-Dec-02 82
13-Dec-02 70
14-Dec-02 79
15-Dec-02 77
16-Dec-02 83
17-Dec-02 154
18-Dec-02 195
19-Dec-02 131
20-Dec-02 138
21-Dec-02 99
22-Dec-02 58
23-Dec-02 154
24-Dec-02 149
25-Dec-02 141
26-Dec-02 139
27-Dec-02 137
28-Dec-02 154
29-Dec-02 174
30-Dec-02 169
31-Dec-02 151
1-Jan-03 124
2-Jan-03 121
3-Jan-03 138
4-Jan-03 155
5-Jan-03 161
6-Jan-03 174
7-Jan-03 183
8-Jan-03 171
9-Jan-03 167
10-Jan-03 146
11-Jan-03 135
12-Jan-03 119
13-Jan-03 110
14-Jan-03 92
15-Jan-03 87
16-Jan-03 81
17-Jan-03 78
18-Jan-03 94
19-Jan-03 121
20-Jan-03 110
21-Jan-03 114
22-Jan-03 110
23-Jan-03 87
24-Jan-03 94
25-Jan-03 100
26-Jan-03 118
27-Jan-03 118
28-Jan-03 145
29-Jan-03 133
30-Jan-03 120
31-Jan-03 111
1-Feb-03 87
2-Feb-03 112
3-Feb-03 142
4-Feb-03 128
5-Feb-03 128
6-Feb-03 104
7-Feb-03 83
8-Feb-03 78
9-Feb-03 78
10-Feb-03 86
11-Feb-03 114
12-Feb-03 110
13-Feb-03 99
14-Feb-03 89
15-Feb-03 78
16-Feb-03 71
17-Feb-03 65
18-Feb-03 65
19-Feb-03 67
20-Feb-03 61
21-Feb-03 67
22-Feb-03 68
23-Feb-03 63
24-Feb-03 65
25-Feb-03 54
26-Feb-03 50
27-Feb-03 73
28-Feb-03 73
1-Mar-03 69
2-Mar-03 71
3-Mar-03 63
4-Mar-03 89
5-Mar-03 115
6-Mar-03 113
7-Mar-03 100
8-Mar-03 82
9-Mar-03 84
10-Mar-03 94
11-Mar-03 101
12-Mar-03 103
13-Mar-03 89
14-Mar-03 73
15-Mar-03 73
16-Mar-03 65
17-Mar-03 63
18-Mar-03 63
19-Mar-03 53
20-Mar-03 59
21-Mar-03 65
22-Mar-03 71
23-Mar-03 80
24-Mar-03 72
25-Mar-03 69
26-Mar-03 67
27-Mar-03 64
28-Mar-03 72
29-Mar-03 82
30-Mar-03 88
31-Mar-03 93
1-Apr-03 78
2-Apr-03 75
3-Apr-03 71
4-Apr-03 63
5-Apr-03 68
6-Apr-03 61
7-Apr-03 79
8-Apr-03 57
9-Apr-03 58
10-Apr-03 55
11-Apr-03 53
12-Apr-03 52
13-Apr-03 51
14-Apr-03 41
15-Apr-03 21
16-Apr-03 65
17-Apr-03 60
18-Apr-03 80
19-Apr-03 72
20-Apr-03 63
21-Apr-03 70
22-Apr-03 69
23-Apr-03 90
24-Apr-03 101
25-Apr-03 120
26-Apr-03 103
27-Apr-03 86
28-Apr-03 53
29-Apr-03 24
30-Apr-03 24
1-May-03 15
2-May-03 55
3-May-03 34
4-May-03 35
5-May-03 22
6-May-03 24
7-May-03 40
8-May-03 34
9-May-03 45
10-May-03 33
11-May-03 16
12-May-03 8
13-May-03 9
14-May-03 9
15-May-03 10
16-May-03 26
17-May-03 28
18-May-03 22
19-May-03 14
20-May-03 17
21-May-03 17
22-May-03 7
23-May-03 10
24-May-03 3
25-May-03 3
26-May-03 19
27-May-03 22
28-May-03 14
29-May-03 27
30-May-03 36
31-May-03 42
1-Jun-03 73
2-Jun-03 86
3-Jun-03 40
4-Jun-03 35
5-Jun-03 23
6-Jun-03 28
7-Jun-03 35
8-Jun-03 37
9-Jun-03 33