Site ID: 2280 Lat. 36.1646 Japan 0
River: Tone Long. 139.6793
Site name: 0 Contributing area: 6379 km2 Ratio to Comparison Station: 0.23
Latest measurement: 13-Jul-10 Mean annual runoff: 4823 mm (2003-2009)
Hydrologic status: 2 Normal flow Total runoff this year (2010): 3739.4 mm
Latest M/C ratio: 1.28 Seven day total: 73.4 mm
Estimated current discharge: 710 m3/sec Percent of mean 7-day total: 104.4 % (today's value compared to mean for same period, 2003-2009)
5 yr recurrence flood: 4451 m3/sec (from Log Pearson III analysis)
Status Codes:  1 = Low flow or ice, 2 = Normal flow, 3 = Flood, 4 = Major Flood 4291 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
855 2002 no data no data no data no data no data no data no data 133.2 195.3 237.0 106.6 183.4
2934 2003 152.0 150.9 235.3 391.0 897.2 322.6 122.1 134.8 135.3 143.2 133.0 116.4
2340 2004 73.8 94.2 165.8 376.5 728.7 264.0 151.2 72.1 95.3 189.7 103.9 24.3
5051 2005 85.1 48.5 287.2 562.7 1412.5 476.5 176.6 293.3 407.8 378.9 462.3 459.5
5038 2006 360.1 335.1 405.0 506.9 1245.0 710.1 292.3 322.9 391.9 469.0 0.0 0.0
6275 2007 429.6 363.8 369.9 501.0 1463.3 719.1 333.4 383.7 424.9 453.5 443.5 389.8
6040 2008 342.0 321.9 383.5 701.8 1160.2 662.9 328.3 351.0 387.2 517.9 423.1 460.2
6084 2009 341.4 385.6 472.4 626.5 1322.9 486.9 288.8 363.5 414.0 439.9 471.2 471.0
3739 2010 376.2 310.7 387.6 593.1 1288.4 653.4 129.9 0.0 0.0 0.0 0.0 0.0
Mean Annual Runoff (mm): 4823 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-02 757
23-Jul-02 757
24-Jul-02 804
25-Jul-02 731
26-Jul-02 793
27-Jul-02 828
28-Jul-02 783
29-Jul-02 892
30-Jul-02 482
31-Jul-02 482
1-Aug-02 204
2-Aug-02 204
3-Aug-02
4-Aug-02
5-Aug-02
6-Aug-02
7-Aug-02
8-Aug-02
9-Aug-02 882
10-Aug-02 424
11-Aug-02 494
12-Aug-02 494
13-Aug-02 129
14-Aug-02 170
15-Aug-02 108
16-Aug-02 61
17-Aug-02 3
18-Aug-02 56
19-Aug-02 3
20-Aug-02 171
21-Aug-02 611
22-Aug-02 860
23-Aug-02 888
24-Aug-02 707
25-Aug-02 764
26-Aug-02 554
27-Aug-02 346
28-Aug-02 377
29-Aug-02 290
30-Aug-02 360
31-Aug-02 670
1-Sep-02 470
2-Sep-02 391
3-Sep-02 484
4-Sep-02 416
5-Sep-02 578
6-Sep-02 678
7-Sep-02 624
8-Sep-02 832
9-Sep-02 938
10-Sep-02 830
11-Sep-02 683
12-Sep-02 468
13-Sep-02 346
14-Sep-02 256
15-Sep-02 314
16-Sep-02
17-Sep-02
18-Sep-02
19-Sep-02
20-Sep-02
21-Sep-02 1255
22-Sep-02 1255
23-Sep-02 729
24-Sep-02 629
25-Sep-02 390
26-Sep-02 408
27-Sep-02 363
28-Sep-02 353
29-Sep-02 320
30-Sep-02 407
1-Oct-02 588
2-Oct-02 713
3-Oct-02 1036
4-Oct-02 972
5-Oct-02 1156
6-Oct-02 1361
7-Oct-02 608
8-Oct-02 600
9-Oct-02 94
10-Oct-02 220
11-Oct-02 412
12-Oct-02 578
13-Oct-02 477
14-Oct-02 655
15-Oct-02 798
16-Oct-02 540
17-Oct-02 795
18-Oct-02 562
19-Oct-02 673
20-Oct-02 595
21-Oct-02 413
22-Oct-02 289
23-Oct-02 290
24-Oct-02 380
25-Oct-02 555
26-Oct-02 566
27-Oct-02 294
28-Oct-02 341
29-Oct-02 223
30-Oct-02 314
31-Oct-02 398
1-Nov-02 267
2-Nov-02 520
3-Nov-02 151
4-Nov-02 252
5-Nov-02 246
6-Nov-02 248
7-Nov-02 259
8-Nov-02 85
9-Nov-02 85
10-Nov-02 154
11-Nov-02 132
12-Nov-02 229
13-Nov-02 392
14-Nov-02 238
15-Nov-02 347
16-Nov-02 395
17-Nov-02 228
18-Nov-02 459
19-Nov-02 234
20-Nov-02 203
21-Nov-02 72
22-Nov-02 136
23-Nov-02 147
24-Nov-02 111
25-Nov-02 187
26-Nov-02 255
27-Nov-02 512
28-Nov-02 476
29-Nov-02 472
30-Nov-02 382
1-Dec-02 316
2-Dec-02 431
3-Dec-02 580
4-Dec-02 847
5-Dec-02 744
6-Dec-02 614
7-Dec-02 285
8-Dec-02 294
9-Dec-02 206
10-Dec-02 247
11-Dec-02 398
12-Dec-02 225
13-Dec-02 204
14-Dec-02 178
15-Dec-02 148
16-Dec-02 134
17-Dec-02 224
18-Dec-02 172
19-Dec-02 430
20-Dec-02 743
21-Dec-02 611
22-Dec-02 768
23-Dec-02 457
24-Dec-02 526
25-Dec-02 577
26-Dec-02 552
27-Dec-02 879
28-Dec-02 595
29-Dec-02 502
30-Dec-02 312
31-Dec-02 339
1-Jan-03 368
2-Jan-03 333
3-Jan-03 325
4-Jan-03 288
5-Jan-03 288
6-Jan-03 67
7-Jan-03 158
8-Jan-03 67
9-Jan-03 131
10-Jan-03 237
11-Jan-03 347
12-Jan-03 520
13-Jan-03 524
14-Jan-03 472
15-Jan-03 218
16-Jan-03 251
17-Jan-03 169
18-Jan-03 283
19-Jan-03 398
20-Jan-03 584
21-Jan-03 942
22-Jan-03 542
23-Jan-03 556
24-Jan-03 412
25-Jan-03 432
26-Jan-03 512
27-Jan-03 510
28-Jan-03 533
29-Jan-03 259
30-Jan-03 301
31-Jan-03 193
1-Feb-03 207
2-Feb-03 200
3-Feb-03 276
4-Feb-03 296
5-Feb-03 445
6-Feb-03 742
7-Feb-03 733
8-Feb-03 444
9-Feb-03 92
10-Feb-03 416
11-Feb-03 416
12-Feb-03 597
13-Feb-03 974
14-Feb-03 378
15-Feb-03 435
16-Feb-03 300
17-Feb-03 321
18-Feb-03 355
19-Feb-03 313
20-Feb-03 325
21-Feb-03 326
22-Feb-03 384
23-Feb-03 360
24-Feb-03 293
25-Feb-03 349
26-Feb-03 361
27-Feb-03 372
28-Feb-03 436
1-Mar-03 378
2-Mar-03 3
3-Mar-03 343
4-Mar-03 464
5-Mar-03 452
6-Mar-03 549 </